Merge pull request #57 from enpaul/enp/meta

Update meta ahead of release
Update CI workflow to use parallelized install
2025-10-28 07:00:43 +00:00 · 2021-04-19 23:53:32 -04:00 · 2021-04-19 23:48:38 -04:00 · 2021-04-19 23:47:32 -04:00 · 2021-04-19 23:43:38 -04:00 · 2021-04-19 23:39:32 -04:00
25 changed files with 2590 additions and 1078 deletions
--- a/.github/scripts/setup-env.sh
+++ b/.github/scripts/setup-env.sh
@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+#
+# Environment setup script for the local project. Intended to be used with automation
+# to create a repeatable local environment for tests to be run in. The python env
+# this script creates can be accessed at the location defined by the CI_VENV variable
+# below.
+
+set -e;
+
+# ##### Prereqs #####
+#
+# Set global vars for usage in the script, create the cache directory so we can rely
+# on that existing, then dump some diagnostic info for later reference.
+#
+CI_VENV=$HOME/ci;
+CI_CACHE=$HOME/.cache;
+CI_CACHE_GET_POETRY="$CI_CACHE/get-poetry.py";
+CI_POETRY=$HOME/.poetry/bin/poetry;
+CI_VENV_PIP="$CI_VENV/bin/pip";
+CI_VENV_PIP_VERSION=19.3.1;
+CI_VENV_TOX="$CI_VENV/bin/tox";
+
+mkdir --parents "$CI_CACHE";
+
+command -v python;
+python --version;
+
+# ##### Install Poetry #####
+#
+# Download the poetry install script to the cache directory and then install poetry.
+# After dump the poetry version for later reference.
+#
+curl https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py \
+  --output "$CI_CACHE_GET_POETRY" \
+  --silent \
+  --show-error \
+  --location;
+python "$CI_CACHE_GET_POETRY" --yes 1>/dev/null;
+
+python "$CI_POETRY" --version --no-ansi;
+
+# ##### Setup Runtime Venv #####
+#
+# Create a virtual environment for poetry to use, upgrade pip in that venv to a pinned
+# version, then install the current project to the venv.
+#
+# Note 1: Poetry, Tox, and this project plugin all use pip under the hood for package
+#         installation. This means that even though we are creating up to eight venvs
+#         during a given CI run they all share the same download cache.
+# Note 2: The "VIRTUAL_ENV=$CI_VENV" prefix on the poetry commands below sets the venv
+#         that poetry will use for operations. There is no CLI flag for poetry that
+#         directs it to use a given environment, but if it finds itself in an existing
+#         environment it will use it and skip environment creation.
+#
+python -m venv "$CI_VENV";
+
+$CI_VENV_PIP install "pip==$CI_VENV_PIP_VERSION" \
+  --upgrade \
+  --quiet;
+
+VIRTUAL_ENV=$CI_VENV "$CI_POETRY" install \
+  --extras poetry \
+  --quiet \
+  --no-ansi \
+  &>/dev/null;
+
+# ##### Print Debug Info #####
+#
+# Print the pip and tox versions (which will include registered plugins)
+#
+$CI_VENV_PIP --version;
+echo "tox $($CI_VENV_TOX --version)";
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -20,24 +20,51 @@ jobs:
          - version: 3.9
            toxenv: py39
    steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python ${{ matrix.python.version }}
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup:python${{ matrix.python.version }}
        uses: actions/setup-python@v1
        with:
          python-version: ${{ matrix.python.version }}
-      - name: Install project
-        run: pip install .
-      - name: Run tests via ${{ matrix.python.toxenv }}
-        run: tox -e ${{ matrix.python.toxenv }}
+      - name: Setup:cache
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.cache/pypoetry/cache
+            ~/.poetry
+          # Including the hashed poetry.lock in the cache slug ensures that the cache
+          # will be invalidated, and thus all packages will be redownloaded, if the
+          # lockfile is updated
+          key: ${{ runner.os }}-${{ matrix.python.toxenv }}-${{ hashFiles('**/poetry.lock') }}
+      - name: Setup:env
+        run: .github/scripts/setup-env.sh
+      - name: Run:${{ matrix.python.toxenv }}
+        run: $HOME/ci/bin/tox -e ${{ matrix.python.toxenv }} --parallelize-locked-install=10
  Check:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python 3.8
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup:python3.8
        uses: actions/setup-python@v1
        with:
          python-version: 3.8
-      - name: Install project
-        run: pip install .
-      - name: Run meta checks
-        run: tox -e static -e static-tests -e security
+      - name: Setup:cache
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.cache/pypoetry/cache
+            ~/.poetry
+          # Hardcoded 'py38' slug here lets this cache piggyback on the 'py38' cache
+          # that is generated for the tests above
+          key: ${{ runner.os }}-py38-${{ hashFiles('**/poetry.lock') }}
+      - name: Setup:env
+        run: .github/scripts/setup-env.sh
+      - name: Run:static
+        run: $HOME/ci/bin/tox -e static --parallelize-locked-install=10
+      - name: Run:static-tests
+        run: $HOME/ci/bin/tox -e static-tests --parallelize-locked-install=10
+      - name: Run:security
+        run: $HOME/ci/bin/tox -e security --parallelize-locked-install=10
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -13,36 +13,67 @@
 # by the Poetry-managed dependency.
 #
 repos:
-  - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.3.0
+  - repo: local
    hooks:
      - id: end-of-file-fixer
+        name: end-of-file-fixer
+        entry: end-of-file-fixer
        language: system
+        types:
+          - text
+
      - id: fix-encoding-pragma
+        name: fix-encoding-pragma
+        entry: fix-encoding-pragma
+        language: system
        args:
          - "--remove"
+        types:
+          - python
+
+      - id: trailing-whitespace-fixer
+        name: trailing-whitespace-fixer
+        entry: trailing-whitespace-fixer
        language: system
-      - id: trailing-whitespace
-        language: system
+        types:
+          - text
+
      - id: check-merge-conflict
+        name: check-merge-conflict
+        entry: check-merge-conflict
        language: system
+        types:
+          - text

-  - repo: https://github.com/psf/black
-    rev: 20.8b1
-    hooks:
-      - id: black
-        language: system
-
-  - repo: https://github.com/asottile/blacken-docs
-    rev: v1.8.0
-    hooks:
-      - id: blacken-docs
-        language: system
-
-  - repo: https://github.com/asottile/reorder_python_imports
-    rev: v2.3.6
-    hooks:
      - id: reorder-python-imports
+        name: reorder-python-imports
+        entry: reorder-python-imports
+        language: system
        args:
          - "--unclassifiable-application-module=tox_poetry_installer"
+        types:
+          - python
+
+      - id: black
+        name: black
+        entry: black
        language: system
+        types:
+          - python
+
+      - id: blacken-docs
+        name: blacken-docs
+        entry: blacken-docs
+        language: system
+        types:
+          - text
+
+      - id: mdformat
+        name: mdformat
+        entry: mdformat
+        language: system
+        args:
+          - "--number"
+          - "--wrap=90"
+        types:
+          - markdown
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -0,0 +1,258 @@
+# changelog
+
+See also: [Github Release Page](https://github.com/enpaul/tox-poetry-installer/releases).
+
+## Version 0.7.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.7.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.7.0/)
+
+- Add runtime option `--parallelize-locked-install` to support installing locked
+  dependencies in parallel to speed up test environment creation
+- Add config option `require_poetry` to allow per-environment control over whether the
+  plugin should force an error
+- Add unit tests for custom dependency processing and installation
+- Update internal logging system to reduce code duplication
+- Update documentation to improve readability
+- Deprecate runtime option `--require-poetry`
+
+## Version 0.6.4
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.4),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.4/)
+
+- Remove custom package compatibility checking logic from transient dependency resolution
+  process
+- Add integration with Poetry's compatibility
+  [`Marker`](https://github.com/python-poetry/poetry-core/blob/master/poetry/core/version/markers.py)
+  object system for determining package compatibility with the current platform ([#43](https://github.com/enpaul/tox-poetry-installer/issues/43))
+- Add missing PyPI classifier for Python 3
+
+## Version 0.6.3
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.3),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.3/)
+
+- Update required `tox` version from `^3.0` to `^3.8` to avoid compatibility issues
+- Update logging messages to improve UX
+- Fix transient dependency packages being installed in a pseudo-random order due to Python
+  sets being unordered ([#41](https://github.com/enpaul/tox-poetry-installer/issues/41))
+- Fix outdated docstrings
+
+## Version 0.6.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.2/)
+
+- Update locked version of `py` to `1.10.0` to address
+  [CVE-2020-29651](https://nvd.nist.gov/vuln/detail/CVE-2020-29651)
+- Fix dependency identification failing when the package under test is a transient
+  dependency of a locked dependency specified for installation
+- Fix `AttributeError` being raised while creating the Tox self-provisioned environment when
+  using either the
+  [`minversion`](https://tox.readthedocs.io/en/latest/config.html#conf-minversion) or
+  [`requires`](https://tox.readthedocs.io/en/latest/config.html#conf-requires) Tox config
+  options
+
+## Version 0.6.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.1/)
+
+- Update logging around transient dependency processing to improve debugging of dependency
+  installation problems
+- Fix regression around handling of Poetry's unsafe packages when the unsafe package is a
+  transient dependency ([#33](https://github.com/enpaul/tox-poetry-installer/issues/33))
+- Fix handling of Poetry's unsafe packages when the unsafe package is a primary (environment
+  or package) dependency
+
+## Version 0.6.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.0/)
+
+- Add `poetry` extra to support installing Poetry as a direct dependency of the plugin
+- Add `--require-poetry` runtime option to force Tox failure if Poetry is not installed
+- Update logging messages to improve UX around non-verbose messaging
+- Update error logging to avoid dumping stack traces
+- Update integration with Tox's `action` object to better manage internal state at runtime
+- Update documentation to more clearly cover more use cases
+- Remove `poetry` as a required dependency to support external Poetry installations
+
+First beta release :tada:
+
+## Version 0.5.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.5.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.5.2/)
+
+- Fix always attempting to install dependencies with incompatible python version constraints
+- Fix always attempting to install dependencies with incompatible python platforms
+
+## Version 0.5.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.5.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.5.1/)
+
+- Add CI/Tox tests for Python-3.9
+- Update dependency processing to reduce duplication during installation
+- Update minimum python requirement to `3.6.1`
+- Fix `UnboundLocal` exception when not installing project dependencies
+
+## Version 0.5.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.5.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.5.0/)
+
+- Add option `locked_deps` to better support both locked and unlocked dependencies in a
+  single environment
+- Add blocking functionality when using `require_locked_deps = true` to prevent other hooks
+  from running after this one
+- Update documentation to include new configuration options and errors
+- Update documentation to improve future maintainability
+- Update module structure to move from single-file module to multi-file directory module
+- Fix `RecursionError` when installing locked dependencies that specify recursive
+  dependencies
+- Fix always reinstalling all locked dependencies on every run regardless of update status
+
+## Version 0.4.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.4.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.4.0/)
+
+- Add `install_dev_deps` configuration option for automatically installing all Poetry
+  dev-dependencies into a Tox testenv
+
+## Version 0.3.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.3.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.3.1/)
+
+- Fix error when installing an environment with no extras specified in the configuration
+- Fix problem where only the dependencies of the sequentially last extra would be installed
+- Fix regression causing no project dependencies to be installed
+
+## Version 0.3.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.3.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.3.0/)
+
+- Add support for the Tox
+  [`extras`](https://tox.readthedocs.io/en/latest/config.html#conf-extras) configuration
+  parameter
+- Update runtime-skip-conditional checks to improve clarity and ease of future maintenance
+- Update lockfile parsing to avoid parsing it multiple times for a single testenv
+- Fix missing `poetry-core` dependency when using Poetry\<1.1.0
+
+## Version 0.2.4
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.4),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.4/)
+
+- Fix support for Poetry-1.1 ([#2](https://github.com/enpaul/tox-poetry-installer/issues/2))
+- Include tests in sdist ([#8](https://github.com/enpaul/tox-poetry-installer/issues/8))
+
+## Version 0.2.3
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.3),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.3/)
+
+- Fix usage of the plugin in non-Poetry based projects ([#1](https://github.com/enpaul/tox-poetry-installer/issues/1))
+- Fix treating dependency names as case sensitive when they shouldn't be ([#7](https://github.com/enpaul/tox-poetry-installer/issues/7))
+
+## Version 0.2.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.2/)
+
+- Fix breaking when running Tox in projects that do not use Poetry for their
+  environment/dependency management ([#1](https://github.com/enpaul/tox-poetry-installer/issues/1))
+
+## Version 0.2.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.1/)
+
+- Fix duplicate installation of transient environment dependencies
+- Fix logging error indicating all environments always have zero dependencies
+- Fix installing main dependencies when `skip_install` is false but `skipdist` is true
+
+## Version 0.2.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.0/)
+
+- Add support for per-environment configuration setting `require_locked_deps`
+- Add support for per-dependency lock requirement setting using `@poetry` suffix
+- Add support for coexisting locked and unlocked dependencies in a single test environment
+- Update documentation to include more usage examples
+- Update documentation to improve clarity around problems and drawbacks
+- Fix logging messages being inconsistently formatted
+- Fix raising the same exception for "locked dependency not found" and "locked dependency
+  specifies alternate version" errors
+- Fix plugin errors not reporting to Tox that they happened
+- Fix plugin errors not causing Tox to mark the env as failed
+
+## Version 0.1.3
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.1.3),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.1.3/)
+
+- Fix core functionality of installing dependencies from lockfile for the
+  package-under-development ("dev-package") built by Tox
+- Fix log messages not being displayed with Tox output
+- Add additional logging output for diagnostics
+- Update Poetry requirement to exclude upcoming Poetry-1.1.0 release which will break
+  compatibility
+
+This is the first release where the core functionality actually works as expected :tada:
+
+## Version 0.1.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.1.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.1.2/)
+
+- Test trivial functionality on Python-3.6 and Python-3.7
+- Fix disagreement between `pyproject.toml` and module metadata on what the current version
+  is
+- Fix constant named for PEP-440 that should have been named for PEP-508
+
+## Version 0.1.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.1.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.1.1/)
+
+- Add/update project documentation
+- Add static analysis and formatting enforcement automation to toxfile
+- Add security analysis to toxfile
+- Fix raising `KeyError` for unlocked dependencies
+- Fix mishandling of Poetry's "unsafe dependencies"
+- Lint, blacken, and generally improve code quality
+
+## Version 0.1.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.1.0),
+
+- Add support for installing Tox environment dependencies using Poetry from the Poetry
+  lockfile
--- a/CODE_OF_CONDUCT.md
+++ b/CODE_OF_CONDUCT.md
@@ -1,129 +1,115 @@
-
 # Contributor Covenant Code of Conduct

 ## Our Pledge

-We as members, contributors, and leaders pledge to make participation in our
-community a harassment-free experience for everyone, regardless of age, body
-size, visible or invisible disability, ethnicity, sex characteristics, gender
-identity and expression, level of experience, education, socio-economic status,
-nationality, personal appearance, race, religion, or sexual identity
-and orientation.
+We as members, contributors, and leaders pledge to make participation in our community a
+harassment-free experience for everyone, regardless of age, body size, visible or
+invisible disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal appearance,
+race, religion, or sexual identity and orientation.

-We pledge to act and interact in ways that contribute to an open, welcoming,
-diverse, inclusive, and healthy community.
+We pledge to act and interact in ways that contribute to an open, welcoming, diverse,
+inclusive, and healthy community.

 ## Our Standards

-Examples of behavior that contributes to a positive environment for our
-community include:
+Examples of behavior that contributes to a positive environment for our community include:

-* Demonstrating empathy and kindness toward other people
-* Being respectful of differing opinions, viewpoints, and experiences
-* Giving and gracefully accepting constructive feedback
-* Accepting responsibility and apologizing to those affected by our mistakes,
-  and learning from the experience
-* Focusing on what is best not just for us as individuals, but for the
-  overall community
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes, and learning
+  from the experience
+- Focusing on what is best not just for us as individuals, but for the overall community

 Examples of unacceptable behavior include:

-* The use of sexualized language or imagery, and sexual attention or
-  advances of any kind
-* Trolling, insulting or derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or email
-  address, without their explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
+- The use of sexualized language or imagery, and sexual attention or advances of any kind
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or email address, without their
+  explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting

 ## Enforcement Responsibilities

-Community leaders are responsible for clarifying and enforcing our standards of
-acceptable behavior and will take appropriate and fair corrective action in
-response to any behavior that they deem inappropriate, threatening, offensive,
-or harmful.
+Community leaders are responsible for clarifying and enforcing our standards of acceptable
+behavior and will take appropriate and fair corrective action in response to any behavior
+that they deem inappropriate, threatening, offensive, or harmful.

-Community leaders have the right and responsibility to remove, edit, or reject
-comments, commits, code, wiki edits, issues, and other contributions that are
-not aligned to this Code of Conduct, and will communicate reasons for moderation
-decisions when appropriate.
+Community leaders have the right and responsibility to remove, edit, or reject comments,
+commits, code, wiki edits, issues, and other contributions that are not aligned to this
+Code of Conduct, and will communicate reasons for moderation decisions when appropriate.

 ## Scope

-This Code of Conduct applies within all community spaces, and also applies when
-an individual is officially representing the community in public spaces.
-Examples of representing our community include using an official e-mail address,
-posting via an official social media account, or acting as an appointed
-representative at an online or offline event.
+This Code of Conduct applies within all community spaces, and also applies when an
+individual is officially representing the community in public spaces. Examples of
+representing our community include using an official e-mail address, posting via an
+official social media account, or acting as an appointed representative at an online or
+offline event.

 ## Enforcement

-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported to the community leaders responsible for enforcement at
-[INSERT CONTACT METHOD].
-All complaints will be reviewed and investigated promptly and fairly.
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported to the
+community leaders responsible for enforcement at \[INSERT CONTACT METHOD\]. All
+complaints will be reviewed and investigated promptly and fairly.

-All community leaders are obligated to respect the privacy and security of the
-reporter of any incident.
+All community leaders are obligated to respect the privacy and security of the reporter of
+any incident.

 ## Enforcement Guidelines

-Community leaders will follow these Community Impact Guidelines in determining
-the consequences for any action they deem in violation of this Code of Conduct:
+Community leaders will follow these Community Impact Guidelines in determining the
+consequences for any action they deem in violation of this Code of Conduct:

 ### 1. Correction

 **Community Impact**: Use of inappropriate language or other behavior deemed
 unprofessional or unwelcome in the community.

-**Consequence**: A private, written warning from community leaders, providing
-clarity around the nature of the violation and an explanation of why the
-behavior was inappropriate. A public apology may be requested.
+**Consequence**: A private, written warning from community leaders, providing clarity
+around the nature of the violation and an explanation of why the behavior was
+inappropriate. A public apology may be requested.

 ### 2. Warning

-**Community Impact**: A violation through a single incident or series
-of actions.
+**Community Impact**: A violation through a single incident or series of actions.

-**Consequence**: A warning with consequences for continued behavior. No
-interaction with the people involved, including unsolicited interaction with
-those enforcing the Code of Conduct, for a specified period of time. This
-includes avoiding interactions in community spaces as well as external channels
-like social media. Violating these terms may lead to a temporary or
-permanent ban.
+**Consequence**: A warning with consequences for continued behavior. No interaction with
+the people involved, including unsolicited interaction with those enforcing the Code of
+Conduct, for a specified period of time. This includes avoiding interactions in community
+spaces as well as external channels like social media. Violating these terms may lead to a
+temporary or permanent ban.

 ### 3. Temporary Ban

-**Community Impact**: A serious violation of community standards, including
-sustained inappropriate behavior.
+**Community Impact**: A serious violation of community standards, including sustained
+inappropriate behavior.

-**Consequence**: A temporary ban from any sort of interaction or public
-communication with the community for a specified period of time. No public or
-private interaction with the people involved, including unsolicited interaction
-with those enforcing the Code of Conduct, is allowed during this period.
-Violating these terms may lead to a permanent ban.
+**Consequence**: A temporary ban from any sort of interaction or public communication with
+the community for a specified period of time. No public or private interaction with the
+people involved, including unsolicited interaction with those enforcing the Code of
+Conduct, is allowed during this period. Violating these terms may lead to a permanent ban.

 ### 4. Permanent Ban

-**Community Impact**: Demonstrating a pattern of violation of community
-standards, including sustained inappropriate behavior,  harassment of an
-individual, or aggression toward or disparagement of classes of individuals.
+**Community Impact**: Demonstrating a pattern of violation of community standards,
+including sustained inappropriate behavior, harassment of an individual, or aggression
+toward or disparagement of classes of individuals.

-**Consequence**: A permanent ban from any sort of public interaction within
-the community.
+**Consequence**: A permanent ban from any sort of public interaction within the community.

 ## Attribution

-This Code of Conduct is adapted from the [Contributor Covenant][homepage],
-version 2.0, available at
-https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 2.0,
+available at https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.

 Community Impact Guidelines were inspired by [Mozilla's code of conduct
 enforcement ladder](https://github.com/mozilla/diversity).

-[homepage]: https://www.contributor-covenant.org
-
 For answers to common questions about this code of conduct, see the FAQ at
 https://www.contributor-covenant.org/faq. Translations are available at
 https://www.contributor-covenant.org/translations.
+
+[homepage]: https://www.contributor-covenant.org
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,11 +1,12 @@
 ## Copyright 2020 Ethan Paul

-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
-documentation files (the "Software"), to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
-and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+Permission is hereby granted, free of charge, to any person obtaining a copy of this
+software and associated documentation files (the "Software"), to deal in the Software
+without restriction, including without limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+to whom the Software is furnished to do so, subject to the following conditions:

-The above copyright notice and this permission notice shall be included in all copies or substantial portions of
-the Software.
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.

 **THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.**
--- a/8
+++ b/8
@@ -19,7 +19,7 @@ clean-py:
 	rm --recursive --force ./dist
 	rm --recursive --force ./build
 	rm --recursive --force ./*.egg-info
-	rm --recursive --force __pycache__/
+	rm --recursive --force ./**/__pycache__/

 clean: clean-tox clean-py; ## Clean temp build/cache files and directories

@@ -32,5 +32,9 @@ source: ## Build Python source distribution package
 test: ## Run the project testsuite(s)
 	poetry run tox --recreate

-publish: wheel source ## Build and upload to pypi (requires $PYPI_API_KEY be set)
+dev: ## Create the local dev environment
+	poetry install -E poetry
+	poetry run pre-commit install
+
+publish: test wheel source ## Build and upload to pypi (requires $PYPI_API_KEY be set)
 	@poetry publish --username __token__ --password $(PYPI_API_KEY)
--- a/README.md
+++ b/README.md
@@ -1,349 +1,358 @@
 # tox-poetry-installer

-A plugin for [Tox](https://tox.readthedocs.io/en/latest/) that allows test environment
-dependencies to be installed using [Poetry](https://python-poetry.org/) from its lockfile.
+A plugin for [Tox](https://tox.readthedocs.io/en/latest/) that lets you install test
+environment dependencies from the [Poetry](https://python-poetry.org/) lockfile.

-⚠️ **This project is alpha software and should not be used in production environments** ⚠️
-
-[![ci-status](https://github.com/enpaul/tox-poetry-installer/workflows/CI/badge.svg?event=push)](https://github.com/enpaul/tox-poetry-installer/actions)
-[![license](https://img.shields.io/pypi/l/tox-poetry-installer)](https://opensource.org/licenses/MIT)
-[![pypi-version](https://img.shields.io/pypi/v/tox-poetry-installer)](https://pypi.org/project/tox-poetry-installer/)
-[![python-versions](https://img.shields.io/pypi/pyversions/tox-poetry-installer)](https://www.python.org)
+[![CI Status](https://github.com/enpaul/tox-poetry-installer/workflows/CI/badge.svg?event=push)](https://github.com/enpaul/tox-poetry-installer/actions)
+[![PyPI Version](https://img.shields.io/pypi/v/tox-poetry-installer)](https://pypi.org/project/tox-poetry-installer/)
+[![PyPI Downloads](https://img.shields.io/pypi/dm/tox-poetry-installer)](https://libraries.io/pypi/tox-poetry-installer)
+[![License](https://img.shields.io/pypi/l/tox-poetry-installer)](https://opensource.org/licenses/MIT)
+[![Python Supported Versions](https://img.shields.io/pypi/pyversions/tox-poetry-installer)](https://www.python.org)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)

-**Documentation**
+⚠️ **This project is beta software and is under active development** ⚠️

-* [Installation](#installation)
-* [Quick Start](#quick-start)
-* [Reference and Usage](#reference-and-usage)
-  * [Config Option Reference](#config-option-reference)
-  * [Error Reference](#error-reference)
-  * [Example Config](#example-config)
-* [Known Drawbacks and Problems](#known-drawbacks-and-problems)
-* [Why would I use this?](#why-would-i-use-this) (What problems does this solve?)
-* [Developing](#developing)
-* [Contributing](#contributing)
-* [Roadmap](#roadmap)
-  * [Path to Beta](#path-to-beta)
-  * [Path to Stable](#path-to-stable)
+## Documentation

-Related resources:
-* [Poetry Python Project Manager](https://python-poetry.org/)
-* [Tox Automation Project](https://tox.readthedocs.io/en/latest/)
-* [Poetry Dev-Dependencies Tox Plugin](https://github.com/sinoroc/tox-poetry-dev-dependencies)
-* [Poetry Tox Plugin](https://github.com/tkukushkin/tox-poetry)
-* [Other Tox plugins](https://tox.readthedocs.io/en/latest/plugins.html)
+- [Feature Overview](#feature-overview)
+- [Using the Plugin](#user-documentation)
+  - [Installing](#installing)
+  - [Quick Start](#quick-start)
+  - [References](#references)
+    - [Config Options](#configuration-options)
+    - [Runtime Options](#runtime-options)
+    - [Errors](#errors)
+  - [Other Notes](#other-notes)
+    - [Unsupported Tox config options](#unsupported-tox-config-options)
+    - [Updating locked dependencies in a testenv](#updating-locked-dependencies-in-a-testenv)
+    - [Installing unsafe dependencies](#installing-unsafe-dependencies)
+    - [Using with an unmanaged Poetry installation](#using-with-an-unmanaged-poetry-installation)
+- [Developing the Plugin](#developer-documentation)
+- [Road Map](#road-map)

+See the
+[Changelog](https://github.com/enpaul/tox-poetry-installer/blob/devel/CHANGELOG.md) for
+release history.

-## Installation
+*See also: [official Tox plugins](https://tox.readthedocs.io/en/latest/plugins.html), [Poetry-Dev-Dependencies Tox plugin](https://github.com/sinoroc/tox-poetry-dev-dependencies), [Poetry Tox plugin](https://github.com/tkukushkin/tox-poetry)*

-Add the plugin as a development dependency of a Poetry project:
+## Feature Overview

-```
-~ $: poetry add tox-poetry-installer --dev
+- Manage package versions in exactly one place and with exactly one tool: Poetry.
+- Ensure CI/CD and other automation tools are using the same package versions that you are
+  in your local development environment.
+- Add only the packages you need to a Tox test environment, instead of everything in your
+  lockfile.
+- Directly integrate with Poetry, re-using your existing package indexes and credentials
+  with no additional configuration.
+- Wherever possible, built-in Tox config options are always respected and their behavior
+  kept consistent.
+- Extremely configurable. Every feature can be disabled or enabled for any given Tox test
+  environment.
+- Friendly to other Tox plugins and supports a wide range of environments.
+
+## User Documentation
+
+*This section is for users looking to integrate the plugin with their project or CI system. For information on contributing to the plugin please see the [Developer Docs](#developer-documentation)*
+
+### Installing
+
+The recommended way to install the plugin is to add it to a project using Poetry:
+
+```bash
+poetry add tox-poetry-installer[poetry] --dev
 ```

-Confirm that the plugin is installed, and Tox recognizes it, by checking the Tox version:
+> **Note:** Always install the plugin with the `[poetry]` extra, unless you are
+> [managing the Poetry installation yourself](#externally-managed-poetry-installation).
+
+Alternatively, it can be installed directly to a virtual environment using Pip, though
+this is not recommended:
+
+```bash
+source somevenv/bin/activate
+pip install tox-poetry-installer
+```
+
+Alternatively alternatively, it can be installed using the Tox
+[`requires`](https://tox.readthedocs.io/en/latest/config.html#conf-requires) option by
+adding the below to `tox.ini`, though this is also not recommended:
+
+```ini
+requires =
+    tox-poetry-installer[poetry] == 0.7.0
+```
+
+After installing, check that Tox recognizes the plugin by running
+`poetry run tox --version`. The command should give output similar to below:

 ```
-~ $: poetry run tox --version
 3.20.0 imported from .venv/lib64/python3.8/site-packages/tox/__init__.py
 registered plugins:
-    tox-poetry-installer-0.5.0 at .venv/lib64/python3.8/site-packages/tox_poetry_installer.py
+    tox-poetry-installer-0.7.0 at .venv/lib64/python3.8/site-packages/tox_poetry_installer.py
 ```

-If using Pip, ensure that the plugin is installed to the same environment as Tox:
+### Quick Start

-```
-# Calling the virtualenv's 'pip' binary directly will cause pip to install to that virtualenv
-~ $: /path/to/my/automation/virtualenv/bin/pip install tox
-~ $: /path/to/my/automation/virtualenv/bin/pip install tox-poetry-installer
-```
+Congratulations! 🎉 Just by installing the plugin your Tox config is already using locked
+dependencies: when Tox builds and installs your project package to a test environment,
+your project package's dependencies will be installed from the lockfile.

-**Note:** While it is possible to install this plugin using Tox's
-[`requires`](https://tox.readthedocs.io/en/latest/config.html#conf-requires)
-configuration option, it is not recommended. Dependencies from the `requires` option are
-installed using the default Tox installation backend which opens up the
-[possibility of transient dependency problems](#why-would-i-use-this) in your automation
-environment.
+Now lets update an example `tox.ini` to install the other test environment dependencies
+from the lockfile.

-
-## Quick Start
-
-To add dependencies from the lockfile to a Tox environment, add the option `locked_deps`
-to the environment configuration and list names of dependencies (with no version
-specifier) under it:
+A `testenv` from the example `tox.ini` we're starting with is below:

 ```ini
 [testenv]
 description = Some very cool tests
-locked_deps =
-    black
-    pylint
-    mypy
-commands = ...
-```
-
-The standard `deps` option can be used in parallel with the `locked_deps` option to
-install unlocked dependencies (dependencies not in the lockfile) alongside locked
-dependencies:
-
-```ini
-[testenv]
-description = Some very cool tests
-locked_deps =
-    black
-    pylint
-    mypy
 deps =
-    pytest == 6.1.1
-    pytest-cov >= 2.10, <2.11
+    black == 20.8b1
+    pylint >=2.4.4,<2.7.0
+    mypy <0.800
 commands = ...
 ```

-Alternatively, to quickly install all Poetry dev-dependencies to a Tox environment, add the
-`install_dev_deps =  true` option to the environment configuration.
+To update the config so that the testenv dependencies are installed from the lockfile, we
+can replace the built-in
+[`deps`](https://tox.readthedocs.io/en/latest/config.html#conf-deps) option with the
+`locked_deps` option provided by the plugin, and then remove the inline version
+specifiers. With these changes the three testenv dependencies (as well as all of their
+dependencies) will be installed from the lockfile when the test environment is recreated:

-**Note:** Regardless of the settings outlined above, all dependencies of the project package (the
-one Tox is testing) will always be installed from the lockfile.
+```ini
+[testenv]
+description = Some very cool tests
+locked_deps =
+    black
+    pylint
+    mypy
+commands = ...
+```

+We can also add the `require_locked_deps` option to the test environment. This will both
+block any other install tools (another plugin or Tox itself) from installing dependencies
+to the Tox environment and also cause Tox to fail if the test environment also uses the
+built-in [`deps`](https://tox.readthedocs.io/en/latest/config.html#conf-deps) option:

-## Reference and Usage
+```ini
+[testenv]
+description = Some very cool tests
+require_locked_deps = true
+locked_deps =
+    black
+    pylint
+    mypy
+commands = ...
+```

-### Config Option Reference
+> **Note:** Settings configured on the main `testenv` environment are inherited by child
+> test environments (for example, `testenv:foo`). To override this, specify the setting in
+> the child environment with a different value.
+
+Alternatively, we can skip specifying all of our dependencies for a test environment in
+the Tox config and just install all of our Poetry dev-dependencies automatically:
+
+```ini
+[testenv]
+description = Some very cool tests
+require_locked_deps = true
+install_dev_deps = true
+commands = ...
+```
+
+> **Note:** Setting `install_dev_deps = true` on an environment that also installs the
+> project package is functionally equivalent to running `poetry install`.
+
+Finally, we can also install an unlocked dependency (a dependency which doesn't take its
+version from the Poetry lockfile) into the test environment alongside the locked ones. We
+need to remove the `require_locked_deps = true` option, otherwise the environment will
+error, and then we can add the unlocked dependency using the built-in
+[`deps`](https://tox.readthedocs.io/en/latest/config.html#conf-deps) option:
+
+```ini
+[testenv]
+description = Some very cool tests
+deps =
+    pytest >= 5.6.0,<6.0.0
+locked_deps =
+    black
+    pylint
+    mypy
+commands = ...
+```
+
+## References
+
+### Configuration Options

 All options listed below are Tox environment options and can be applied to one or more
 environment sections of the `tox.ini` file. They cannot be applied to the global Tox
 configuration section.

-**NOTE:** Environment settings applied to the main `testenv` environment will be
-inherited by child environments (i.e. `testenv:foo`) unless they are explicitly
-overridden by the child environment's configuration.
+> **Note:** Settings configured on the main `testenv` environment are inherited by child
+> test environments (for example, `testenv:foo`). To override this, specify the setting in
+> the child environment with a different value.

-| Option                | Type            | Default | Usage                                          |
-|:----------------------|:----------------|:--------|:-----------------------------------------------|
-| `locked_deps`         | Multi-line list | `[]`    | Names of packages in the Poetry lockfile to install to the Tox environment. All dependencies specified here (and their dependencies) will be installed to the Tox environment using the version the Poetry lockfile specifies for them. |
-| `require_locked_deps` | Bool            | `false` | Indicates whether the environment should allow unlocked dependencies (dependencies not in the Poetry lockfile) to be installed alongside locked dependencies. If `true` then installation of unlocked dependencies will be blocked and an error will be raised if the `deps` option specifies any values. |
-| `install_dev_deps`    | Bool            | `false` | Indicates whether all Poetry development dependencies should be installed to the environment. Provides a quick and easy way to install all dev-dependencies without needing to specify them individually. |
+| Option                |  Type   | Default | Description                                                                                                                                                                                                                                                                                                                                                          |
+| :-------------------- | :-----: | :-----: | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `locked_deps`         |  List   |  `[]`   | Names of packages to install to the test environment from the Poetry lockfile. Transient dependencies (packages required by these dependencies) are automatically included.                                                                                                                                                                                          |
+| `require_locked_deps` | Boolean |  False  | Whether the plugin should block attempts to install unlocked dependencies to the test environment. If enabled, then the [`tox_testenv_install_deps`](https://tox.readthedocs.io/en/latest/plugins.html#tox.hookspecs.tox_testenv_install_deps) plugin hook will be intercepted and an error will be raised if the test environment has the `deps` option configured. |
+| `install_dev_deps`    | Boolean |  False  | Whether all of the Poetry dev-dependencies should be installed to the test environment.                                                                                                                                                                                                                                                                              |
+| `require_poetry`      | Boolean |  False  | Whether Tox should be forced to fail if the plugin cannot import Poetry locally. If `False` then the plugin will be skipped for the test environment if Poetry cannot be imported. If `True` then the plugin will force the environment to error and the Tox run to fail.                                                                                            |

-### Error Reference
+### Runtime Options

-* `LockedDepVersionConflictError` - Indicates that a locked dependency included a PEP-508 version
-  specifier (i.e. `pytest >=6.0, <6.1`). Locked dependencies always take their version from the
-  Poetry lockfile so specifying a specific version for a locked dependency is not supported.
-* `LockedDepNotFoundError` - Indicates that a locked dependency could not be found in the Poetry
-  lockfile. This can be solved by [adding the dependency using Poetry](https://python-poetry.org/docs/cli/#add).
-* `ExtraNotFoundError` - Indicates that the Tox `extras` option specified a project extra that
-  Poetry does not know about. This may be due to a misconfigured `pyproject.toml` or out of date
-  lockfile.
-* `LockedDepsRequiredError` - Indicates that an environment with `require_locked_deps = true` also
-  specified unlocked dependencies using Tox's `deps` option. This can be solved by either setting
-  `require_locked_deps = false` (the default) or removing the `deps` option from the environment
-  configuration.
+All arguments listed below can be passed to the `tox` command to modify runtime behavior
+of the plugin.

-### Example Config
+| Argument                       |  Type   | Default | Description                                                                                                                                                                                                                                                                                            |
+| :----------------------------- | :-----: | :-----: | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `--parallelize-locked-install` | Integer |   `0`   | Number of worker threads to use to install dependencies in parallel. Installing in parallel with more threads can greatly speed up the install process, but can cause race conditions during install. The default, `0`, disables the parallel install so that dependencies are installed sequentially. |

-```ini
-[tox]
-envlist = py, foo, bar, baz
-isolated_build = true
+> **Note:** The `--require-poetry` runtime option is deprecated and will be removed in
+> version 1.0.0. Please set `require_poetry = true` in `tox.ini` for environments that
+> should fail if Poetry is not available.

-# The base testenv will always use locked dependencies and only ever installs the project package
-# (and its dependencies) and the two pytest dependencies listed below
-[testenv]
-description = Some very cool tests
-require_locked_deps = true
-locked_deps =
-    pytest
-    pytest-cov
-commands = ...
+### Errors

-# This environment also requires locked dependencies, but the "skip_install" setting means that
-# the project dependencies will not be installed to the environment from the lockfile
-[testenv:foo]
-description = FOObarbaz
-skip_install = true
-require_locked_deps = true
-locked_deps =
-    requests
-    toml
-    ruamel.yaml
-commands = ...
+There are several errors that the plugin can encounter for a test environment when Tox is
+run. If an error is encountered then the status of the test environment that caused the
+error will be set to one of the "Status" values below to indicate what the error was.

-# This environment allows unlocked dependencies to be installed ad-hoc. Below, the "mypy" and
-# "pylint" dependencies (and their dependencies) will be installed from the Poetry lockfile but the
-# "black" dependency will be installed using the default Tox backend. Note, this environment does
-# not specify "require_locked_deps = true" to allow the unlocked "black" dependency without raising
-# an error.
-[testenv:bar]
-description = fooBARbaz
-locked_deps =
-    mypy
-    pylint
-deps =
-    black
-commands = ...
+| Status/Name                     | Cause                                                                                                                                                                                                                           |
+| :------------------------------ | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| `ExtraNotFoundError`            | Indicates that the [`extras`](https://tox.readthedocs.io/en/latest/config.html#conf-extras) config option specified an extra that is not configured by Poetry in `pyproject.toml`.                                              |
+| `LockedDepVersionConflictError` | Indicates that an item in the `locked_deps` config option includes a [PEP-508 version specifier](https://www.python.org/dev/peps/pep-0508/#grammar) (ex: `pytest >=6.0, <6.1`).                                                 |
+| `LockedDepNotFoundError`        | Indicates that an item specified in the `locked_deps` config option does not match the name of a package in the Poetry lockfile.                                                                                                |
+| `LockedDepsRequiredError`       | Indicates that a test environment with the `require_locked_deps` config option set to `true` also specified unlocked dependencies using the [`deps`](https://tox.readthedocs.io/en/latest/config.html#conf-deps) config option. |
+| `PoetryNotInstalledError`       | Indicates that the `poetry` module could not be imported under the current runtime environment, and the `--require-poetry` flag was provided.                                                                                   |

-# This environment requires locked dependencies but does not specify any. Instead it specifies the
-# "install_dev_deps = true" option which will cause all of the Poetry dev-dependencies to be
-# installed from the lockfile.
-[testenv:baz]
-description = foobarBAZ
-install_dev_deps = true
-require_locked_deps = true
-commands = ...
+> **Note:** One or more of these errors can be caused by the `pyproject.toml` being out of
+> sync with the Poetry lockfile. If this is the case, than a warning will be logged when Tox
+> is run.
+
+### Other Notes
+
+#### Unsupported Tox config options
+
+Below are the built-in Tox config options that are not respected by this plugin. All of
+these options are made obsolete by the Poetry lockfile: either they aren't needed or their
+equivalent functionality is instead taken directly from the package details Poetry stores
+in its lockfile.
+
+> **Note:** The unsupported Tox config options will still apply to unlocked dependencies
+> being installed with the default Tox installation backend.
+
+- [`install_command`](https://tox.readthedocs.io/en/latest/config.html#conf-install_command)
+- [`pip_pre`](https://tox.readthedocs.io/en/latest/config.html#conf-pip_pre)
+- [`download`](https://tox.readthedocs.io/en/latest/config.html#conf-download)
+- [`indexserver`](https://tox.readthedocs.io/en/latest/config.html#conf-indexserver)
+- [`usedevelop`](https://tox.readthedocs.io/en/latest/config.html#conf-indexserver)
+
+#### Updating locked dependencies in a testenv
+
+When Poetry updates the version of a package in the lockfile (using either `poetry lock`
+or `poetry update`) then the plugin will automatically use this new version to install the
+package to a test environment; there is no need to manually update `tox.ini` after
+updating the Poetry lockfile.
+
+However, the plugin cannot determine when the lockfile is updated. If a Tox test
+environment has already been created then it will need to be recreated (using Tox's
+built-in
+[`--recreate`](https://tox.readthedocs.io/en/latest/example/basic.html#forcing-re-creation-of-virtual-environments)
+option) for the new version to be found and installed.
+
+> **Note:** To force Tox to always recreate a test environment the
+> [`recreate`](https://tox.readthedocs.io/en/latest/config.html#conf-recreate) config option
+> can be set.
+
+#### Installing unsafe dependencies
+
+There are several packages that cannot be installed from the lockfile because they are
+excluded by Poetry itself. As a result these packages cannot be installed by this plugin
+either as test environment dependencies passed directly to `locked_deps` or as a transient
+dependency. When one of these packages is encountered by the plugin a warning will be
+logged to the console and
+**the unsafe package will not be installed to the test environment**.
+
+This list can be found in the Poetry source code
+[here](https://github.com/python-poetry/poetry/blob/master/poetry/puzzle/provider.py). As
+of [Poetry 1.1.6](https://github.com/python-poetry/poetry/releases/tag/1.1.6) there are
+four packages classified as "unsafe" by Poetry and excluded from the lockfile:
+
+- `setuptools`
+- `distribute`
+- `pip`
+- `wheel`
+
+#### Using with an unmanaged Poetry installation
+
+In CI/CD systems, automation environments, or other Python environments where the loaded
+site packages are not managed by Poetry, it can be useful to manage the local installation
+of Poetry externally. This also helps to avoid problems that can be caused by the
+`--no-root`, `--no-dev`, or `--remove-untracked` arguments to the `poetry install` command
+which, in some situations, can cause Poetry to uninstall itself if Poetry is specified as
+a dependency of one of the packages it is managing (like this plugin). To support these
+use cases, this plugin specifies the `poetry` package as an optional dependency that can
+be installed using a setuptools extra also named `poetry`.
+
+**Critical Warning: This plugin requires Poetry to function. If the plugin is installed without the `poetry` setuptools extra then Poetry must be installed independently for the plugin to function properly.**
+
+To skip installing the `poetry` package as a dependency of `tox-poetry-installer`, do not
+specify the `poetry` extra when adding the plugin:
+
+```bash
+# Adding the package without the "[poetry]" extra specifier so that
+# Poetry is not added as a transient dev-dependency:
+poetry add tox-poetry-installer --dev
+
+# Adding the package with the "[poetry]" extra specifier, so the Poetry
+# package will be added to the environment and tracked in the lockfile:
+poetry add tox-poetry-installer[poetry] --dev
 ```

+Once the plugin is installed- either with or without the Poetry extra- you can validate
+that the plugin will run correctly with the following command. This command checks that
+all three required components (Tox, Poetry, and the plugin itself) are available in the
+current Python environment:

-## Known Drawbacks and Problems
-
-* The following `tox.ini` configuration options have no effect on the dependencies installed from
-  the Poetry lockfile (note that they will still affect unlocked dependencies):
-  * [`install_command`](https://tox.readthedocs.io/en/latest/config.html#conf-install_command)
-  * [`pip_pre`](https://tox.readthedocs.io/en/latest/config.html#conf-pip_pre)
-  * [`downloadcache`](https://tox.readthedocs.io/en/latest/config.html#conf-downloadcache) (deprecated)
-  * [`download`](https://tox.readthedocs.io/en/latest/config.html#conf-download)
-  * [`indexserver`](https://tox.readthedocs.io/en/latest/config.html#conf-indexserver)
-  * [`usedevelop`](https://tox.readthedocs.io/en/latest/config.html#conf-indexserver)
-
-* Tox will not automatically detect changes to the locked dependencies and so
-  environments will not be automatically rebuilt when locked dependencies are changed.
-  When changing the locked dependencies (or their versions) the environments will need to
-  be manually rebuilt using either the `-r`/`--recreate` CLI option or the
-  `recreate = true` option in `tox.ini`.
-
-* There are a handful of packages that cannot be installed from the lockfile, whether as specific
-  dependencies or as transient dependencies (dependencies of dependencies). This is due to
-  [an ongoing discussion in the Poetry project](https://github.com/python-poetry/poetry/issues/1584);
-  the list of dependencies that cannot be installed from the lockfile can be found
-  [here](https://github.com/python-poetry/poetry/blob/cc8f59a31567f806be868aba880ae0642d49b74e/poetry/puzzle/provider.py#L55).
-  This plugin will skip these dependencies entirely, but log a warning when they are encountered.
-
-
-## Why would I use this?
-
-**Introduction**
-
-The lockfile is a file generated by a package manager for a project that records what
-dependencies are installed, the versions of those dependencies, and any additional metadata that
-the package manager needs to recreate the local project environment. This allows developers
-to have confidence that a bug they are encountering that may be caused by one of their
-dependencies will be reproducible on another device. In addition, installing a project
-environment from a lockfile gives confidence that automated systems running tests or performing
-builds are using the same environment as a developer.
-
-[Poetry](https://python-poetry.org/) is a project dependency manager for Python projects, and
-so it creates and manages a lockfile so that its users can benefit from all the features
-described above. [Tox](https://tox.readthedocs.io/en/latest/#what-is-tox) is an automation tool
-that allows Python developers to run tests suites, perform builds, and automate tasks within
-self-contained [Python virtual environments](https://docs.python.org/3/tutorial/venv.html).
-To make these environments useful Tox supports installing dependencies in each environment.
-However, since these environments are created on the fly and Tox does not maintain a lockfile,
-there can be subtle differences between the dependencies a developer is using and the
-dependencies Tox uses.
-
-This is where this plugin comes into play.
-
-By default Tox uses [Pip](https://docs.python.org/3/tutorial/venv.html) to install the
-PEP-508 compliant dependencies to a test environment. This plugin extends the default
-Tox dependency installation behavior to support installing dependencies using a Poetry-based
-installation method that makes use of the dependency metadata from Poetry's lockfile.
-
-**The Problem**
-
-Environment dependencies for a Tox environment are usually specified in PEP-508 format, like
-the below example:
-
-```ini
-# from tox.ini
-...
-
-[testenv]
-description = Some very cool tests
-deps =
-    foo == 1.2.3
-    bar >=1.3,<2.0
-    baz
-
-...
+```bash
+python -c '\
+  import tox;\
+  import tox_poetry_installer;\
+  from poetry.poetry import Poetry;\
+'
 ```

-Let's assume these dependencies are also useful during development, so they can be added to the
-Poetry environment using this command:
+> **Note:** To force Tox to fail if Poetry is not installed, run the `tox` command with the
+> `--require-poetry` option. See the [Runtime Options](#runtime-options) for more
+> information.

- ```
- poetry add --dev \
-    foo==1.2.3 \
-    bar>=1.3,<2.0 \
-    baz
- ```
+## Developer Documentation

- However there is a potential problem that could arise from each of these environment
- dependencies that would _only_ appear in the Tox environment and not in the Poetry
- environment in use by a developer:
+All project contributors and participants are expected to adhere to the
+[Contributor Covenant Code of Conduct, v2](CODE_OF_CONDUCT.md) ([external link](https://www.contributor-covenant.org/version/2/0/code_of_conduct/)).

- * **The `foo` dependency is pinned to a specific version:** let's imagine a security
-   vulnerability is discovered in `foo` and the maintainers release version `1.2.4` to fix
-   it. A developer can run `poetry remove foo` and then `poetry add foo^1.2` to get the new
-   version, but the Tox environment is left unchanged. The development environment, as defined by
-   the lockfile, is now patched against the vulnerability but the Tox environment is not.
+The `devel` branch has the latest (and potentially unstable) changes. The stable releases
+are tracked on [Github](https://github.com/enpaul/tox-poetry-installer/releases),
+[PyPi](https://pypi.org/project/tox-poetry-installer/#history), and in the
+[Changelog](CHANGELOG.md).

-* **The `bar` dependency specifies a dynamic range:** a dynamic range allows a range of
-  versions to be installed, but the lockfile will have an exact version specified so that
-  the Poetry environment is reproducible; this allows versions to be updated with
-  `poetry update` rather than with the `remove` and `add` commands used above. If the
-  maintainers of `bar` release version `1.6.0` then the Tox environment will install it
-  because it is valid for the specified version range. Meanwhile the Poetry environment will
-  continue to install the version from the lockfile until `poetry update bar` explicitly
-  updates it. The development environment is now has a different version of `bar` than the Tox
-  environment.
+- To report a bug, request a feature, or ask for assistance, please
+  [open an issue on the Github repository](https://github.com/enpaul/tox-poetry-installer/issues/new).
+- To report a security concern or code of conduct violation, please contact the project
+  author directly at **‌me \[at‌\] enp dot‎ ‌one**.
+- To submit an update, please
+  [fork the repository](https://docs.github.com/en/enterprise/2.20/user/github/getting-started-with-github/fork-a-repo)
+  and [open a pull request](https://github.com/enpaul/tox-poetry-installer/compare).

-* **The `baz` dependency is unpinned:** unpinned dependencies are
-  [generally a bad idea](https://python-poetry.org/docs/faq/#why-are-unbound-version-constraints-a-bad-idea),
-  but here it can cause real problems. Poetry will interpret an unbound dependency using
-  [the carrot requirement](https://python-poetry.org/docs/dependency-specification/#caret-requirements)
-  but Pip (via Tox) will interpret it as a wildcard. If the latest version of `baz` is `1.0.0`
-  then `poetry add baz` will result in a constraint of `baz>=1.0.0,<2.0.0` while the Tox
-  environment will have a constraint of `baz==*`. The Tox environment can now install an
-  incompatible version of `baz` and any errors that causes cannot be replicated using `poetry update`.
+Developing this project requires at least [Python 3.6](https://www.python.org/downloads/)
+and at least [Poetry 1.0](https://python-poetry.org/docs/#installation). GNU Make can
+optionally be used to quickly setup a local development environment, but this is not
+required.

-All of these problems can apply not only to the dependencies specified for a Tox environment,
-but also to the dependencies of those dependencies, those dependencies' dependencies, and so on.
-
-**The Solution**
-
-This plugin allows dependencies specified in Tox environment take their version directly from
-the Poetry lockfile without needing an independent version to be specified in the Tox
-environment configuration. The modified version of the example environment given below appears
-less stable than the one presented above because it does not specify any versions for its
-dependencies:
-
-```ini
-# from tox.ini
-...
-
-[testenv]
-description = Some very cool tests
-require_locked_deps = true
-locked_deps =
-    foo
-    bar
-    baz
-
-...
-```
-
-However with the `tox-poetry-installer` plugin installed the `require_locked_deps = true`
-setting means that Tox will install these dependencies from the Poetry lockfile so that the
-version installed to the Tox environment exactly matches the version Poetry is managing. When
-`poetry update` updates the lockfile with new versions of these dependencies, Tox will
-automatically install these new versions without needing any changes to the configuration.
-
-
-## Developing
-
-This project requires a developer to have Poetry version 1.0+ installed on their workstation, see
-the [installation instructions here](https://python-poetry.org/docs/#installation).
+To setup a local development environment:

 ```bash
 # Clone the repository...
@@ -352,72 +361,66 @@ git clone https://github.com/enpaul/tox-poetry-installer.git
 # ...over SSH
 git clone git@github.com:enpaul/tox-poetry-installer.git

-# Create a the local project virtual environment and install dependencies
-cd tox-poetry-installer
-poetry install
+cd tox-poetry-installer/

-# Install pre-commit hooks
+# Create and configure the local development environment...
+# ...with make:
+make dev
+# ...manually:
+poetry install -E poetry --remove-untracked
 poetry run pre-commit install

-# Run tests and static analysis
-poetry run tox
+# Run tests and CI locally...
+# ...with make:
+make test
+# ...manually:
+poetry run tox --recreate
+
+# See additional make targets
+make help
 ```

+> **Note:** The pre-commit hooks require dependencies in the Poetry environment to run. To
+> make a commit with the pre-commit hooks, you will need to run `poetry run git commit` or,
+> alternatively, [launch an environment shell](https://python-poetry.org/docs/cli/#shell).

-## Contributing
+## Road Map

-All project contributors and participants are expected to adhere to the
-[Contributor Covenant Code of Conduct, Version 2](CODE_OF_CONDUCT.md).
+This project is under active development and is classified as beta software, ready for
+production environments on a provisional basis only.

-The `devel` branch has the latest (potentially unstable) changes. The
-[tagged versions](https://github.com/enpaul/tox-poetry-installer/releases) correspond to the
-releases on PyPI.
-
-* To report a bug, request a feature, or ask for assistance, please
-  [open an issue on the Github repository](https://github.com/enpaul/tox-poetry-installer/issues/new).
-* To report a security concern or code of conduct violation, please contact the project author
-  directly at **ethan dot paul at enp dot one**.
-* To submit an update, please
-  [fork the repository](https://docs.github.com/en/enterprise/2.20/user/github/getting-started-with-github/fork-a-repo)
-  and
-  [open a pull request](https://github.com/enpaul/tox-poetry-installer/compare).
-
-
-## Roadmap
-
-This project is under active development and is classified as alpha software, not yet ready
-for usage in production environments.
-
-* Beta classification will be assigned when the initial feature set is finalized
-* Stable classification will be assigned when the test suite covers an acceptable number of
+- Beta classification was assigned with
+  [v0.6.0](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.0)
+- Stable classification will be assigned when the test suite covers an acceptable number of
  use cases

 ### Path to Beta

- [X] Verify that primary package dependencies (from the `.package` env) are installed
-      correctly using the Poetry backend.
- [X] Support the [`extras`](https://tox.readthedocs.io/en/latest/config.html#conf-extras)
-      Tox configuration option ([#4](https://github.com/enpaul/tox-poetry-installer/issues/4))
- [X] Add per-environment Tox configuration option to fall back to default installation
-      backend.
- [ ] Add warnings when an unsupported Tox configuration option is detected while using the
-      Poetry backend. ([#5](https://github.com/enpaul/tox-poetry-installer/issues/5))
- [X] Add trivial tests to ensure the project metadata is consistent between the pyproject.toml
-      and the module constants.
- [X] Update to use [poetry-core](https://github.com/python-poetry/poetry-core) and
-      improve robustness of the Tox and Poetry module imports
-      to avoid potentially breaking API changes in upstream packages. ([#2](https://github.com/enpaul/tox-poetry-installer/issues/2))
- [ ] Find and implement a way to mitigate the [UNSAFE_DEPENDENCIES issue](https://github.com/python-poetry/poetry/issues/1584) in Poetry.
-      ([#6](https://github.com/enpaul/tox-poetry-installer/issues/6))
- [ ] Fix logging to make proper use of Tox's logging reporter infrastructure ([#3](https://github.com/enpaul/tox-poetry-installer/issues/3))
- [X] Add configuration option for installing all dev-dependencies to a testenv ([#14](https://github.com/enpaul/tox-poetry-installer/issues/14))
+- [x] Verify that primary package dependencies (from the `.package` env) are installed
+  correctly using the Poetry backend.
+- [x] Support the [`extras`](https://tox.readthedocs.io/en/latest/config.html#conf-extras) Tox
+  configuration option ([#4](https://github.com/enpaul/tox-poetry-installer/issues/4))
+- [x] Add per-environment Tox configuration option to fall back to default installation
+  backend.
+- [ ] ~Add warnings when an unsupported Tox configuration option is detected while using the
+  Poetry backend.~ ([#5](https://github.com/enpaul/tox-poetry-installer/issues/5))
+- [x] Add trivial tests to ensure the project metadata is consistent between the pyproject.toml
+  and the module constants.
+- [x] Update to use [poetry-core](https://github.com/python-poetry/poetry-core) and improve
+  robustness of the Tox and Poetry module imports to avoid potentially breaking API changes
+  in upstream packages. ([#2](https://github.com/enpaul/tox-poetry-installer/issues/2))
+- [ ] ~Find and implement a way to mitigate the
+  [UNSAFE_DEPENDENCIES issue](https://github.com/python-poetry/poetry/issues/1584) in
+  Poetry.~ ([#6](https://github.com/enpaul/tox-poetry-installer/issues/6))
+- [x] Fix logging to make proper use of Tox's logging reporter infrastructure ([#3](https://github.com/enpaul/tox-poetry-installer/issues/3))
+- [x] Add configuration option for installing all dev-dependencies to a testenv ([#14](https://github.com/enpaul/tox-poetry-installer/issues/14))

 ### Path to Stable

 Everything in Beta plus...

- [ ] Add tests for each feature version of Tox between 2.3 and 3.20
- [ ] Add tests for Python-3.6, 3.7, and 3.8
- [X] Add Github Actions based CI
- [ ] Add CI for CPython, PyPy, and Conda
- [ ] Add CI for Linux and Windows
+- [ ] Fully replace dependency on `poetry` with dependency on `poetry-core` ([#2](https://github.com/enpaul/tox-poetry-installer/issues/2))
+- [x] Add comprehensive unit tests
+- [ ] Add tests for each feature version of Tox between 3.8 and 3.20
+- [x] Add tests for Python-3.6, 3.7, 3.8, and 3.9
+- [x] Add Github Actions based CI
--- a/poetry.lock
+++ b/poetry.lock
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,9 +1,9 @@
 [tool.poetry]
 name = "tox-poetry-installer"
-version = "0.5.2"
+version = "0.7.0"
 license = "MIT"
 authors = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]
-description = "Tox plugin to install Tox environment dependencies using the Poetry backend and lockfile"
+description = "A plugin for Tox that lets you install test environment dependencies from the Poetry lockfile"
 repository = "https://github.com/enpaul/tox-poetry-installer/"
 packages = [
  {include = "tox_poetry_installer"},
@@ -15,13 +15,14 @@ include = [
 keywords = ["tox", "poetry", "plugin"]
 readme = "README.md"
 classifiers = [
-  "Development Status :: 3 - Alpha",
+  "Development Status :: 4 - Beta",
  "Environment :: Plugins",
  "Framework :: tox",
  "Intended Audience :: Developers",
  "License :: OSI Approved :: MIT License",
  "Natural Language :: English",
  "Operating System :: OS Independent",
+  "Programming Language :: Python :: 3",
  "Programming Language :: Python :: 3.6",
  "Programming Language :: Python :: 3.7",
  "Programming Language :: Python :: 3.8",
@@ -32,11 +33,14 @@ classifiers = [
 [tool.poetry.plugins.tox]
 poetry_installer = "tox_poetry_installer"

+[tool.poetry.extras]
+poetry = ["poetry"]
+
 [tool.poetry.dependencies]
 python = "^3.6.1"
-poetry = "^1.0.0"
+poetry = {version = "^1.0.0", optional = true}
 poetry-core = "^1.0.0"
-tox = "^2.3.0 || ^3.0.0"
+tox = "^3.8.0"

 [tool.poetry.dev-dependencies]
 bandit = "^1.6.2"
@@ -53,6 +57,8 @@ reorder-python-imports = "^2.3.5"
 safety = "^1.9.0"
 toml = "^0.10.1"
 tox = "^3.20.0"
+mdformat = "^0.6.4"
+mdformat-gfm = "^0.2"

 [build-system]
 requires = ["poetry-core>=1.0.0"]
--- a/tests/fixtures.py
+++ b/tests/fixtures.py
@@ -0,0 +1,63 @@
+# pylint: disable=missing-module-docstring, missing-function-docstring, unused-argument, too-few-public-methods
+import time
+from pathlib import Path
+
+import poetry.factory
+import poetry.installation.pip_installer
+import poetry.utils.env
+import pytest
+import tox
+from poetry.core.packages import Package as PoetryPackage
+
+from tox_poetry_installer import utilities
+
+
+TEST_PROJECT_PATH = Path(__file__).parent.resolve() / "test-project"
+
+FAKE_VENV_PATH = Path("nowhere")
+
+
+class MockVirtualEnv:
+    """Mock class for the :class:`poetry.utils.env.VirtualEnv` and :class:`tox.venv.VirtualEnv`"""
+
+    class MockTestenvConfig:  # pylint: disable=missing-class-docstring
+        envdir = FAKE_VENV_PATH
+
+    def __init__(self, *args, **kwargs):
+        self.envconfig = self.MockTestenvConfig()
+        self.installed = []
+
+    @staticmethod
+    def is_valid_for_marker(*args, **kwargs):
+        return True
+
+
+class MockPipInstaller:
+    """Mock class for the :class:`poetry.installation.pip_installer.PipInstaller`"""
+
+    def __init__(self, env: MockVirtualEnv, **kwargs):
+        self.env = env
+
+    def install(self, package: PoetryPackage):
+        self.env.installed.append(package)
+        time.sleep(1)
+
+
+@pytest.fixture
+def mock_venv(monkeypatch):
+    monkeypatch.setattr(utilities, "convert_virtualenv", lambda venv: venv)
+    monkeypatch.setattr(
+        poetry.installation.pip_installer, "PipInstaller", MockPipInstaller
+    )
+    monkeypatch.setattr(tox.venv, "VirtualEnv", MockVirtualEnv)
+    monkeypatch.setattr(poetry.utils.env, "VirtualEnv", MockVirtualEnv)
+
+
+@pytest.fixture(scope="function")
+def mock_poetry_factory(monkeypatch):
+    pypoetry = poetry.factory.Factory().create_poetry(cwd=TEST_PROJECT_PATH)
+
+    def mock_factory(*args, **kwargs):
+        return pypoetry
+
+    monkeypatch.setattr(poetry.factory.Factory, "create_poetry", mock_factory)
--- a/tests/test-project/poetry.lock
+++ b/tests/test-project/poetry.lock
@@ -0,0 +1,505 @@
+[[package]]
+name = "appdirs"
+version = "1.4.4"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "attrs"
+version = "20.3.0"
+description = "Classes Without Boilerplate"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.extras]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "furo", "sphinx", "pre-commit"]
+docs = ["furo", "sphinx", "zope.interface"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]
+
+[[package]]
+name = "certifi"
+version = "2020.12.5"
+description = "Python package for providing Mozilla's CA Bundle."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "chardet"
+version = "4.0.0"
+description = "Universal encoding detector for Python 2 and 3"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "click"
+version = "7.1.2"
+description = "Composable command line interface toolkit"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "colorama"
+version = "0.4.4"
+description = "Cross-platform colored terminal text."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "distlib"
+version = "0.3.1"
+description = "Distribution utilities"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "filelock"
+version = "3.0.12"
+description = "A platform independent file lock."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "flask"
+version = "1.1.2"
+description = "A simple framework for building complex web applications."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.dependencies]
+click = ">=5.1"
+itsdangerous = ">=0.24"
+Jinja2 = ">=2.10.1"
+Werkzeug = ">=0.15"
+
+[package.extras]
+dev = ["pytest", "coverage", "tox", "sphinx", "pallets-sphinx-themes", "sphinxcontrib-log-cabinet", "sphinx-issues"]
+docs = ["sphinx", "pallets-sphinx-themes", "sphinxcontrib-log-cabinet", "sphinx-issues"]
+dotenv = ["python-dotenv"]
+
+[[package]]
+name = "idna"
+version = "2.10"
+description = "Internationalized Domain Names in Applications (IDNA)"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "importlib-metadata"
+version = "3.10.1"
+description = "Read metadata from Python packages"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+
+[[package]]
+name = "importlib-resources"
+version = "5.1.2"
+description = "Read resources from Python packages"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+zipp = {version = ">=0.4", markers = "python_version < \"3.8\""}
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
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+    {file = "MarkupSafe-1.1.1-cp37-cp37m-win_amd64.whl", hash = "sha256:9bf40443012702a1d2070043cb6291650a0841ece432556f784f004937f0f32c"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:6788b695d50a51edb699cb55e35487e430fa21f1ed838122d722e0ff0ac5ba15"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-manylinux1_i686.whl", hash = "sha256:cdb132fc825c38e1aeec2c8aa9338310d29d337bebbd7baa06889d09a60a1fa2"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-manylinux2010_i686.whl", hash = "sha256:acf08ac40292838b3cbbb06cfe9b2cb9ec78fce8baca31ddb87aaac2e2dc3bc2"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-manylinux2010_x86_64.whl", hash = "sha256:d9be0ba6c527163cbed5e0857c451fcd092ce83947944d6c14bc95441203f032"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:caabedc8323f1e93231b52fc32bdcde6db817623d33e100708d9a68e1f53b26b"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-win32.whl", hash = "sha256:596510de112c685489095da617b5bcbbac7dd6384aeebeda4df6025d0256a81b"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-win_amd64.whl", hash = "sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:d73a845f227b0bfe8a7455ee623525ee656a9e2e749e4742706d80a6065d5e2c"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux1_i686.whl", hash = "sha256:98bae9582248d6cf62321dcb52aaf5d9adf0bad3b40582925ef7c7f0ed85fceb"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:2beec1e0de6924ea551859edb9e7679da6e4870d32cb766240ce17e0a0ba2014"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux2010_i686.whl", hash = "sha256:7fed13866cf14bba33e7176717346713881f56d9d2bcebab207f7a036f41b850"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:6f1e273a344928347c1290119b493a1f0303c52f5a5eae5f16d74f48c15d4a85"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:feb7b34d6325451ef96bc0e36e1a6c0c1c64bc1fbec4b854f4529e51887b1621"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-win32.whl", hash = "sha256:22c178a091fc6630d0d045bdb5992d2dfe14e3259760e713c490da5323866c39"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-win_amd64.whl", hash = "sha256:b7d644ddb4dbd407d31ffb699f1d140bc35478da613b441c582aeb7c43838dd8"},
+    {file = "MarkupSafe-1.1.1.tar.gz", hash = "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b"},
+]
+packaging = [
+    {file = "packaging-20.9-py2.py3-none-any.whl", hash = "sha256:67714da7f7bc052e064859c05c595155bd1ee9f69f76557e21f051443c20947a"},
+    {file = "packaging-20.9.tar.gz", hash = "sha256:5b327ac1320dc863dca72f4514ecc086f31186744b84a230374cc1fd776feae5"},
+]
+pluggy = [
+    {file = "pluggy-0.13.1-py2.py3-none-any.whl", hash = "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"},
+    {file = "pluggy-0.13.1.tar.gz", hash = "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0"},
+]
+py = [
+    {file = "py-1.10.0-py2.py3-none-any.whl", hash = "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"},
+    {file = "py-1.10.0.tar.gz", hash = "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3"},
+]
+pyparsing = [
+    {file = "pyparsing-2.4.7-py2.py3-none-any.whl", hash = "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"},
+    {file = "pyparsing-2.4.7.tar.gz", hash = "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1"},
+]
+python-dateutil = [
+    {file = "python-dateutil-2.8.1.tar.gz", hash = "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c"},
+    {file = "python_dateutil-2.8.1-py2.py3-none-any.whl", hash = "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"},
+]
+requests = [
+    {file = "requests-2.25.1-py2.py3-none-any.whl", hash = "sha256:c210084e36a42ae6b9219e00e48287def368a26d03a048ddad7bfee44f75871e"},
+    {file = "requests-2.25.1.tar.gz", hash = "sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804"},
+]
+six = [
+    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
+    {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
+]
+toml = [
+    {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
+    {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
+]
+tox = [
+    {file = "tox-3.23.0-py2.py3-none-any.whl", hash = "sha256:e007673f3595cede9b17a7c4962389e4305d4a3682a6c5a4159a1453b4f326aa"},
+    {file = "tox-3.23.0.tar.gz", hash = "sha256:05a4dbd5e4d3d8269b72b55600f0b0303e2eb47ad5c6fe76d3576f4c58d93661"},
+]
+typing-extensions = [
+    {file = "typing_extensions-3.7.4.3-py2-none-any.whl", hash = "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"},
+    {file = "typing_extensions-3.7.4.3-py3-none-any.whl", hash = "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918"},
+    {file = "typing_extensions-3.7.4.3.tar.gz", hash = "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c"},
+]
+urllib3 = [
+    {file = "urllib3-1.26.4-py2.py3-none-any.whl", hash = "sha256:2f4da4594db7e1e110a944bb1b551fdf4e6c136ad42e4234131391e21eb5b0df"},
+    {file = "urllib3-1.26.4.tar.gz", hash = "sha256:e7b021f7241115872f92f43c6508082facffbd1c048e3c6e2bb9c2a157e28937"},
+]
+virtualenv = [
+    {file = "virtualenv-20.4.3-py2.py3-none-any.whl", hash = "sha256:83f95875d382c7abafe06bd2a4cdd1b363e1bb77e02f155ebe8ac082a916b37c"},
+    {file = "virtualenv-20.4.3.tar.gz", hash = "sha256:49ec4eb4c224c6f7dd81bb6d0a28a09ecae5894f4e593c89b0db0885f565a107"},
+]
+werkzeug = [
+    {file = "Werkzeug-1.0.1-py2.py3-none-any.whl", hash = "sha256:2de2a5db0baeae7b2d2664949077c2ac63fbd16d98da0ff71837f7d1dea3fd43"},
+    {file = "Werkzeug-1.0.1.tar.gz", hash = "sha256:6c80b1e5ad3665290ea39320b91e1be1e0d5f60652b964a3070216de83d2e47c"},
+]
+zipp = [
+    {file = "zipp-3.4.1-py3-none-any.whl", hash = "sha256:51cb66cc54621609dd593d1787f286ee42a5c0adbb4b29abea5a63edc3e03098"},
+    {file = "zipp-3.4.1.tar.gz", hash = "sha256:3607921face881ba3e026887d8150cca609d517579abe052ac81fc5aeffdbd76"},
+]
--- a/tests/test-project/pyproject.toml
+++ b/tests/test-project/pyproject.toml
@@ -0,0 +1,19 @@
+[tool.poetry]
+name = "test-project"
+version = "0.0.0"
+license = "MIT"
+authors = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]
+description = "A fake project for testing"
+
+[tool.poetry.dependencies]
+python = "^3.6.1"
+requests = "^2.25.1"
+tox = "^3.23.0"
+python-dateutil = "^2.8.1"
+Flask = "^1.1.2"
+toml = "^0.10.2"
+attrs = "^20.3.0"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"
--- a/tests/test-project/test_project/init.py
+++ b/tests/test-project/test_project/init.py
--- a/tests/test_installer.py
+++ b/tests/test_installer.py
@@ -0,0 +1,59 @@
+# pylint: disable=missing-module-docstring, redefined-outer-name, unused-argument, wrong-import-order, unused-import
+import time
+
+import tox.venv
+from poetry.factory import Factory
+
+from .fixtures import mock_poetry_factory
+from .fixtures import mock_venv
+from tox_poetry_installer import datatypes
+from tox_poetry_installer import installer
+
+
+def test_deduplication(mock_venv, mock_poetry_factory):
+    """Test that the installer does not install duplicate dependencies"""
+    poetry = Factory().create_poetry(None)
+    packages: datatypes.PackageMap = {
+        item.name: item for item in poetry.locker.locked_repository(False).packages
+    }
+
+    venv = tox.venv.VirtualEnv()
+    to_install = [packages["toml"], packages["toml"]]
+
+    installer.install(poetry, venv, to_install)
+
+    assert len(set(to_install)) == len(venv.installed)  # pylint: disable=no-member
+
+
+def test_parallelization(mock_venv, mock_poetry_factory):
+    """Test that behavior is consistent between parallel and non-parallel usage"""
+    poetry = Factory().create_poetry(None)
+    packages: datatypes.PackageMap = {
+        item.name: item for item in poetry.locker.locked_repository(False).packages
+    }
+
+    to_install = [
+        packages["toml"],
+        packages["toml"],
+        packages["tox"],
+        packages["requests"],
+        packages["python-dateutil"],
+        packages["attrs"],
+    ]
+
+    venv_sequential = tox.venv.VirtualEnv()
+    start_sequential = time.time()
+    installer.install(poetry, venv_sequential, to_install, None)
+    sequential = time.time() - start_sequential
+
+    venv_parallel = tox.venv.VirtualEnv()
+    start_parallel = time.time()
+    installer.install(poetry, venv_parallel, to_install, 5)
+    parallel = time.time() - start_parallel
+
+    # The mock delay during package install is static (one second) so these values should all
+    # be within microseconds of each other
+    assert parallel < sequential
+    assert round(parallel * 5) == round(sequential)
+    assert round(sequential) == len(set(to_install))
+    assert round(parallel * 5) == len(set(to_install))
--- a/tests/test_transients.py
+++ b/tests/test_transients.py
@@ -0,0 +1,85 @@
+# pylint: disable=missing-module-docstring, redefined-outer-name, unused-argument, wrong-import-order, unused-import
+import poetry.factory
+import poetry.utils.env
+import pytest
+from poetry.puzzle.provider import Provider
+
+from .fixtures import mock_poetry_factory
+from .fixtures import mock_venv
+from tox_poetry_installer import constants
+from tox_poetry_installer import datatypes
+from tox_poetry_installer import exceptions
+from tox_poetry_installer import utilities
+
+
+def test_exclude_unsafe():
+    """Test that the unsafe packages are properly excluded
+
+    Also ensure that the internal constant matches the value from Poetry
+    """
+    assert Provider.UNSAFE_PACKAGES == constants.UNSAFE_PACKAGES
+
+    for dep in constants.UNSAFE_PACKAGES:
+        assert utilities.identify_transients(dep, dict(), None) == []
+
+
+def test_allow_missing():
+    """Test that the ``allow_missing`` parameter works as expected"""
+    with pytest.raises(exceptions.LockedDepNotFoundError):
+        utilities.identify_transients("luke-skywalker", dict(), None)
+
+    assert (
+        utilities.identify_transients(
+            "darth-vader", dict(), None, allow_missing=["darth-vader"]
+        )
+        == []
+    )
+
+
+def test_exclude_pep508():
+    """Test that dependencies specified in PEP508 format are properly excluded"""
+    for version in [
+        "foo==1.0",
+        "foo==1",
+        "foo>2.0.0",
+        "foo<=9.3.4.7.8",
+        "foo>999,<=4.6",
+        "foo>1234 || foo<2021.01.01",
+        "foo!=7",
+        "foo~=0.8",
+        "foo!=9,==7",
+        "=>foo",
+    ]:
+        with pytest.raises(exceptions.LockedDepVersionConflictError):
+            utilities.identify_transients(version, dict(), None)
+
+
+def test_functional(mock_poetry_factory, mock_venv):
+    """Integration tests for the :func:`identify_transients` function
+
+    Trivially test that it resolves dependencies properly and that the parent package
+    is always the last in the returned list.
+    """
+    pypoetry = poetry.factory.Factory().create_poetry(None)
+    packages: datatypes.PackageMap = {
+        item.name: item for item in pypoetry.locker.locked_repository(False).packages
+    }
+    venv = poetry.utils.env.VirtualEnv()  # pylint: disable=no-value-for-parameter
+
+    requests_requires = [
+        packages["certifi"],
+        packages["chardet"],
+        packages["idna"],
+        packages["urllib3"],
+        packages["requests"],
+    ]
+
+    transients = utilities.identify_transients("requests", packages, venv)
+
+    assert all((item in requests_requires) for item in transients)
+    assert all((item in transients) for item in requests_requires)
+
+    for package in [packages["requests"], packages["tox"], packages["flask"]]:
+        transients = utilities.identify_transients(package, packages, venv)
+        assert transients[-1] == package
+        assert len(transients) == len(set(transients))
--- a/tox.ini
+++ b/tox.ini
@@ -6,27 +6,31 @@ skip_missing_interpreters = true
 [testenv]
 description = Run the tests
 require_locked_deps = true
+require_poetry = true
+extras =
+    poetry
 locked_deps =
    pytest
    pytest-cov
    toml
 commands =
-    pytest --cov {envsitepackagesdir}/tox_poetry_installer --cov-config {toxinidir}/.coveragerc --cov-report term-missing tests/
+    pytest --cov {toxinidir}/tox_poetry_installer --cov-config {toxinidir}/.coveragerc --cov-report term-missing {toxinidir}/tests/

 [testenv:static]
 description = Static formatting and quality enforcement
 basepython = python3.8
 platform = linux
 ignore_errors = true
-require_locked_deps = true
 locked_deps =
-    pre-commit
-    pre-commit-hooks
    black
    blacken-docs
-    reorder-python-imports
-    pylint
+    mdformat
+    mdformat-gfm
    mypy
+    reorder-python-imports
+    pre-commit
+    pre-commit-hooks
+    pylint
 commands =
    pre-commit run --all-files
    pylint --rcfile {toxinidir}/.pylintrc {toxinidir}/tox_poetry_installer/
@@ -36,10 +40,10 @@ commands =
 description = Static formatting and quality enforcement for the tests
 basepython = python3.8
 platform = linux
-ingore_errors = true
-require_locked_deps = true
+ignore_errors = true
 locked_deps =
    pylint
+    pytest
    mypy
 commands =
    pylint --rcfile {toxinidir}/.pylintrc {toxinidir}/tests/
@@ -49,8 +53,7 @@ commands =
 description = Security checks
 basepython = python3.8
 platform = linux
-ingore_errors = true
-require_locked_deps = true
+ignore_errors = true
 locked_deps =
    bandit
    safety
--- a/tox_poetry_installer/about.py
+++ b/tox_poetry_installer/about.py
@@ -1,7 +1,7 @@
 # pylint: disable=missing-docstring
 __title__ = "tox-poetry-installer"
-__summary__ = "Tox plugin to install Tox environment dependencies using the Poetry backend and lockfile"
-__version__ = "0.5.2"
+__summary__ = "A plugin for Tox that lets you install test environment dependencies from the Poetry lockfile"
+__version__ = "0.7.0"
 __url__ = "https://github.com/enpaul/tox-poetry-installer/"
 __license__ = "MIT"
 __authors__ = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]
--- a/tox_poetry_installer/_poetry.py
+++ b/tox_poetry_installer/_poetry.py
@@ -0,0 +1,39 @@
+"""You've heard of vendoirization, now get ready for internal namespace shadowing
+
+Poetry is an optional dependency of this package explicitly to support the use case of having the
+plugin and the `poetry` package installed to the same python environment; this is most common in
+containers and/or CI. In this case there are two potential problems that can arise in this case:
+
+* The installation of the plugin overwrites the installed version of Poetry resulting in
+  compatibility issues.
+* Running `poetry install --no-dev`, when this plugin is in the dev-deps, results in poetry being
+  uninstalled from the environment.
+
+To support these edge cases, and more broadly to support not messing with a system package manager,
+the `poetry` package dependency is listed as optional dependency. This allows the plugin to be
+installed to the same environment as Poetry and import that same Poetry installation here.
+
+However, simply importing Poetry on the assumption that it is installed breaks another valid use
+case: having this plugin installed alongside Tox when not using a Poetry-based project. To account
+for this the imports in this module are isolated and the resultant import error that would result
+is converted to an internal error that can be caught by callers. Rather than importing this module
+at the module scope it is imported into function scope wherever Poetry components are needed. This
+moves import errors from load time to runtime which allows the plugin to be skipped if Poetry isn't
+installed and/or a more helpful error be raised within the Tox framework.
+"""
+# pylint: disable=unused-import
+import sys
+
+from tox_poetry_installer import exceptions
+
+
+try:
+    from poetry.factory import Factory
+    from poetry.installation.pip_installer import PipInstaller
+    from poetry.io.null_io import NullIO
+    from poetry.poetry import Poetry
+    from poetry.utils.env import VirtualEnv
+except ImportError:
+    raise exceptions.PoetryNotInstalledError(
+        f"No version of Poetry could be imported under the current environment for '{sys.executable}'"
+    ) from None
--- a/tox_poetry_installer/constants.py
+++ b/tox_poetry_installer/constants.py
@@ -5,6 +5,7 @@ in this module.

 All constants should be type hinted.
 """
+from typing import Set
 from typing import Tuple

 from tox_poetry_installer import __about__
@@ -16,4 +17,7 @@ PEP508_VERSION_DELIMITERS: Tuple[str, ...] = ("~=", "==", "!=", ">", "<")

 # Prefix all reporter messages should include to indicate that they came from this module in the
 # console output.
-REPORTER_PREFIX = f"[{__about__.__title__}]:"
+REPORTER_PREFIX: str = f"{__about__.__title__}:"
+
+# Internal list of packages that poetry has deemed unsafe and are excluded from the lockfile
+UNSAFE_PACKAGES: Set[str] = {"distribute", "pip", "setuptools", "wheel"}
--- a/tox_poetry_installer/exceptions.py
+++ b/tox_poetry_installer/exceptions.py
@@ -6,6 +6,7 @@ All exceptions should inherit from the common base exception :exc:`ToxPoetryInst

  ToxPoetryInstallerException
   +-- SkipEnvironment
+   |    +-- PoetryNotInstalledError
   +-- LockedDepVersionConflictError
   +-- LockedDepNotFoundError
   +-- ExtraNotFoundError
@@ -22,6 +23,10 @@ class SkipEnvironment(ToxPoetryInstallerException):
    """Current environment does not meet preconditions and should be skipped by the plugin"""


+class PoetryNotInstalledError(SkipEnvironment):
+    """No version of Poetry could be imported from the current Python environment"""
+
+
 class LockedDepVersionConflictError(ToxPoetryInstallerException):
    """Locked dependencies cannot specify an alternate version for installation"""

--- a/tox_poetry_installer/hooks.py
+++ b/tox_poetry_installer/hooks.py
@@ -4,24 +4,22 @@ All implementations of tox hooks are defined here, as well as any single-use hel
 specifically related to implementing the hooks (to keep the size/readability of the hook functions
 themselves manageable).
 """
-from typing import List
 from typing import Optional

-from poetry.core.packages import Package as PoetryPackage
-from poetry.poetry import Poetry
-from tox import hookimpl
-from tox import reporter
+import tox
 from tox.action import Action as ToxAction
 from tox.config import Parser as ToxParser
 from tox.venv import VirtualEnv as ToxVirtualEnv

-from tox_poetry_installer import constants
+from tox_poetry_installer import __about__
 from tox_poetry_installer import exceptions
+from tox_poetry_installer import installer
+from tox_poetry_installer import logger
 from tox_poetry_installer import utilities
 from tox_poetry_installer.datatypes import PackageMap


-@hookimpl
+@tox.hookimpl
 def tox_addoption(parser: ToxParser):
    """Add required configuration options to the tox INI file

@@ -29,6 +27,21 @@ def tox_addoption(parser: ToxParser):
    dependencies should be treated as locked or not.
    """

+    parser.add_argument(
+        "--require-poetry",
+        action="store_true",
+        dest="require_poetry",
+        help="Trigger a failure if Poetry is not available to Tox",
+    )
+
+    parser.add_argument(
+        "--parallelize-locked-install",
+        type=int,
+        dest="parallelize_locked_install",
+        default=None,
+        help="Number of worker threads to use for installing dependencies from the Poetry lockfile in parallel",
+    )
+
    parser.add_testenv_attribute(
        name="install_dev_deps",
        type="bool",
@@ -43,6 +56,13 @@ def tox_addoption(parser: ToxParser):
        help="Require all dependencies in the environment be installed using the Poetry lockfile",
    )

+    parser.add_testenv_attribute(
+        name="require_poetry",
+        type="bool",
+        default=False,
+        help="Trigger a failure if Poetry is not available to Tox",
+    )
+
    parser.add_testenv_attribute(
        name="locked_deps",
        type="line-list",
@@ -50,7 +70,7 @@ def tox_addoption(parser: ToxParser):
    )


-@hookimpl
+@tox.hookimpl
 def tox_testenv_install_deps(venv: ToxVirtualEnv, action: ToxAction) -> Optional[bool]:
    """Install the dependencies for the current environment

@@ -62,104 +82,97 @@ def tox_testenv_install_deps(venv: ToxVirtualEnv, action: ToxAction) -> Optional
    :param action: Tox action object
    """

+    if venv.envconfig.config.option.require_poetry:
+        logger.warning(
+            "DEPRECATION WARNING: The '--require-poetry' runtime option is deprecated and will be "
+            "removed in version 1.0.0. Please update test environments that require Poetry to "
+            "set the 'require_poetry = true' option in tox.ini"
+        )
+
    try:
        poetry = utilities.check_preconditions(venv, action)
    except exceptions.SkipEnvironment as err:
-        reporter.verbosity1(str(err))
+        if isinstance(err, exceptions.PoetryNotInstalledError) and (
+            venv.envconfig.config.option.require_poetry or venv.envconfig.require_poetry
+        ):
+            venv.status = err.__class__.__name__
+            logger.error(str(err))
+            return False
+        logger.info(str(err))
        return None

-    reporter.verbosity1(
-        f"{constants.REPORTER_PREFIX} Loaded project pyproject.toml from {poetry.file}"
-    )
+    logger.info(f"Loaded project pyproject.toml from {poetry.file}")

-    if venv.envconfig.require_locked_deps and venv.envconfig.deps:
-        raise exceptions.LockedDepsRequiredError(
-            f"Unlocked dependencies '{venv.envconfig.deps}' specified for environment '{venv.name}' which requires locked dependencies"
+    virtualenv = utilities.convert_virtualenv(venv)
+
+    if not poetry.locker.is_fresh():
+        logger.warning(
+            f"The Poetry lock file is not up to date with the latest changes in {poetry.file}"
        )

-    package_map: PackageMap = {
-        package.name: package
-        for package in poetry.locker.locked_repository(True).packages
-    }
-
-    if venv.envconfig.install_dev_deps:
-        dev_deps: List[PoetryPackage] = [
-            dep
-            for dep in package_map.values()
-            if dep not in poetry.locker.locked_repository(False).packages
-        ]
-    else:
-        dev_deps = []
-
-    reporter.verbosity1(
-        f"{constants.REPORTER_PREFIX} Identified {len(dev_deps)} development dependencies to install to env"
-    )
-
    try:
-        env_deps: List[PoetryPackage] = []
-        for dep in venv.envconfig.locked_deps:
-            env_deps += utilities.find_transients(package_map, dep.lower())
-        reporter.verbosity1(
-            f"{constants.REPORTER_PREFIX} Identified {len(env_deps)} environment dependencies to install to env"
+        if venv.envconfig.require_locked_deps and venv.envconfig.deps:
+            raise exceptions.LockedDepsRequiredError(
+                f"Unlocked dependencies '{venv.envconfig.deps}' specified for environment '{venv.name}' which requires locked dependencies"
+            )
+
+        packages: PackageMap = {
+            package.name: package
+            for package in poetry.locker.locked_repository(True).packages
+        }
+
+        if venv.envconfig.install_dev_deps:
+            dev_deps = utilities.find_dev_deps(packages, virtualenv, poetry)
+            logger.info(
+                f"Identified {len(dev_deps)} development dependencies to install to env"
+            )
+        else:
+            dev_deps = []
+            logger.info("Env does not install development dependencies, skipping")
+
+        env_deps = utilities.find_additional_deps(
+            packages, virtualenv, poetry, venv.envconfig.locked_deps
+        )
+
+        logger.info(
+            f"Identified {len(env_deps)} environment dependencies to install to env"
        )

        if not venv.envconfig.skip_install and not venv.envconfig.config.skipsdist:
-            project_deps: List[PoetryPackage] = _find_project_dependencies(
-                venv, poetry, package_map
+            project_deps = utilities.find_project_deps(
+                packages, virtualenv, poetry, venv.envconfig.extras
+            )
+            logger.info(
+                f"Identified {len(project_deps)} project dependencies to install to env"
            )
        else:
            project_deps = []
-            reporter.verbosity1(
-                f"{constants.REPORTER_PREFIX} Skipping installation of project dependencies, env does not install project package"
-            )
-        reporter.verbosity1(
-            f"{constants.REPORTER_PREFIX} Identified {len(project_deps)} project dependencies to install to env"
-        )
+            logger.info("Env does not install project package, skipping")
    except exceptions.ToxPoetryInstallerException as err:
-        venv.status = "lockfile installation failed"
-        reporter.error(f"{constants.REPORTER_PREFIX} {err}")
+        venv.status = err.__class__.__name__
+        logger.error(str(err))
+        return False
+    except Exception as err:
+        venv.status = "InternalError"
+        logger.error(f"Internal plugin error: {err}")
        raise err

-    dependencies = list(set(dev_deps + env_deps + project_deps))
-    reporter.verbosity0(
-        f"{constants.REPORTER_PREFIX} Installing {len(dependencies)} dependencies to env '{action.name}'"
+    dependencies = dev_deps + env_deps + project_deps
+    log_parallel = (
+        f" (using {venv.envconfig.config.option.parallelize_locked_install} threads)"
+        if venv.envconfig.config.option.parallelize_locked_install
+        else ""
+    )
+
+    action.setactivity(
+        __about__.__title__,
+        f"Installing {len(dependencies)} dependencies from Poetry lock file{log_parallel}",
+    )
+    installer.install(
+        poetry,
+        venv,
+        dependencies,
+        venv.envconfig.config.option.parallelize_locked_install,
    )
-    utilities.install_to_venv(poetry, venv, dependencies)

    return venv.envconfig.require_locked_deps or None
-
-
-def _find_project_dependencies(
-    venv: ToxVirtualEnv, poetry: Poetry, packages: PackageMap
-) -> List[PoetryPackage]:
-    """Install the dependencies of the project package
-
-    Install all primary dependencies of the project package.
-
-    :param venv: Tox virtual environment to install the packages to
-    :param poetry: Poetry object the packages were sourced from
-    :param packages: Mapping of package names to the corresponding package object
-    """
-
-    base_dependencies: List[PoetryPackage] = [
-        packages[item.name]
-        for item in poetry.package.requires
-        if not item.is_optional()
-    ]
-
-    extra_dependencies: List[PoetryPackage] = []
-    for extra in venv.envconfig.extras:
-        try:
-            extra_dependencies += [
-                packages[item.name] for item in poetry.package.extras[extra]
-            ]
-        except KeyError:
-            raise exceptions.ExtraNotFoundError(
-                f"Environment '{venv.name}' specifies project extra '{extra}' which was not found in the lockfile"
-            ) from None
-
-    dependencies: List[PoetryPackage] = []
-    for dep in base_dependencies + extra_dependencies:
-        dependencies += utilities.find_transients(packages, dep.name.lower())
-
-    return dependencies
--- a/tox_poetry_installer/installer.py
+++ b/tox_poetry_installer/installer.py
@@ -0,0 +1,74 @@
+"""Funcationality for performing virtualenv installation"""
+# Silence this one globally to support the internal function imports for the proxied poetry module.
+# See the docstring in 'tox_poetry_installer._poetry' for more context.
+# pylint: disable=import-outside-toplevel
+import concurrent.futures
+import contextlib
+import typing
+from typing import Optional
+from typing import Sequence
+from typing import Set
+
+from poetry.core.packages import Package as PoetryPackage
+from tox.venv import VirtualEnv as ToxVirtualEnv
+
+from tox_poetry_installer import logger
+from tox_poetry_installer import utilities
+
+if typing.TYPE_CHECKING:
+    from tox_poetry_installer import _poetry
+
+
+def install(
+    poetry: "_poetry.Poetry",
+    venv: ToxVirtualEnv,
+    packages: Sequence[PoetryPackage],
+    parallels: Optional[int] = None,
+):
+    """Install a bunch of packages to a virtualenv
+
+    :param poetry: Poetry object the packages were sourced from
+    :param venv: Tox virtual environment to install the packages to
+    :param packages: List of packages to install to the virtual environment
+    :param parallels: Number of parallel processes to use for installing dependency packages, or
+                      ``None`` to disable parallelization.
+    """
+    from tox_poetry_installer import _poetry
+
+    logger.info(
+        f"Installing {len(packages)} packages to environment at {venv.envconfig.envdir}"
+    )
+
+    pip = _poetry.PipInstaller(
+        env=utilities.convert_virtualenv(venv),
+        io=_poetry.NullIO(),
+        pool=poetry.pool,
+    )
+
+    installed: Set[PoetryPackage] = set()
+
+    @contextlib.contextmanager
+    def _optional_parallelize():
+        """A bit of cheat, really
+
+        A context manager that exposes a common interface for the caller that optionally
+        enables/disables the usage of the parallel thread pooler depending on the value of
+        the ``parallels`` parameter.
+        """
+        if parallels:
+            with concurrent.futures.ThreadPoolExecutor(
+                max_workers=parallels
+            ) as executor:
+                yield executor.submit
+        else:
+            yield lambda func, arg: func(arg)
+
+    with _optional_parallelize() as executor:
+        for dependency in packages:
+            if dependency not in installed:
+                installed.add(dependency)
+                logger.debug(f"Installing {dependency}")
+                executor(pip.install, dependency)
+            else:
+                logger.debug(f"Skipping {dependency}, already installed")
+        logger.debug("Waiting for installs to finish...")
--- a/tox_poetry_installer/logger.py
+++ b/tox_poetry_installer/logger.py
@@ -0,0 +1,29 @@
+"""Logging wrappers to reduce duplication elsewhere
+
+Calling ``tox.reporter.something()`` and having to format a string with the prefix
+gets really old fast, but more importantly it also makes the flow of the main code
+more difficult to follow because of the added complexity.
+"""
+import tox
+
+from tox_poetry_installer import constants
+
+
+def error(message: str):
+    """Wrapper around :func:`tox.reporter.error`"""
+    tox.reporter.error(f"{constants.REPORTER_PREFIX} {message}")
+
+
+def warning(message: str):
+    """Wrapper around :func:`tox.reporter.warning`"""
+    tox.reporter.warning(f"{constants.REPORTER_PREFIX} {message}")
+
+
+def info(message: str):
+    """Wrapper around :func:`tox.reporter.verbosity1`"""
+    tox.reporter.verbosity1(f"{constants.REPORTER_PREFIX} {message}")
+
+
+def debug(message: str):
+    """Wrapper around :func:`tox.reporter.verbosity2`"""
+    tox.reporter.verbosity2(f"{constants.REPORTER_PREFIX} {message}")
--- a/tox_poetry_installer/utilities.py
+++ b/tox_poetry_installer/utilities.py
@@ -1,121 +1,40 @@
 """Helper utility functions, usually bridging Tox and Poetry functionality"""
-import sys
+# Silence this one globally to support the internal function imports for the proxied poetry module.
+# See the docstring in 'tox_poetry_installer._poetry' for more context.
+# pylint: disable=import-outside-toplevel
+import typing
 from pathlib import Path
+from typing import List
 from typing import Sequence
 from typing import Set
+from typing import Union

+from poetry.core.packages import Dependency as PoetryDependency
 from poetry.core.packages import Package as PoetryPackage
-from poetry.core.semver.version import Version
-from poetry.factory import Factory as PoetryFactory
-from poetry.installation.pip_installer import PipInstaller as PoetryPipInstaller
-from poetry.io.null_io import NullIO as PoetryNullIO
-from poetry.poetry import Poetry
-from poetry.puzzle.provider import Provider as PoetryProvider
-from poetry.utils.env import VirtualEnv as PoetryVirtualEnv
-from tox import reporter
 from tox.action import Action as ToxAction
 from tox.venv import VirtualEnv as ToxVirtualEnv

 from tox_poetry_installer import constants
 from tox_poetry_installer import exceptions
+from tox_poetry_installer import logger
 from tox_poetry_installer.datatypes import PackageMap

-
-def install_to_venv(
-    poetry: Poetry, venv: ToxVirtualEnv, packages: Sequence[PoetryPackage]
-):
-    """Install a bunch of packages to a virtualenv
-
-    :param poetry: Poetry object the packages were sourced from
-    :param venv: Tox virtual environment to install the packages to
-    :param packages: List of packages to install to the virtual environment
-    """
-
-    reporter.verbosity1(
-        f"{constants.REPORTER_PREFIX} Installing {len(packages)} packages to environment at {venv.envconfig.envdir}"
-    )
-
-    installer = PoetryPipInstaller(
-        env=PoetryVirtualEnv(path=Path(venv.envconfig.envdir)),
-        io=PoetryNullIO(),
-        pool=poetry.pool,
-    )
-
-    for dependency in packages:
-        reporter.verbosity1(f"{constants.REPORTER_PREFIX} Installing {dependency}")
-        installer.install(dependency)
+if typing.TYPE_CHECKING:
+    from tox_poetry_installer import _poetry


-def find_transients(packages: PackageMap, dependency_name: str) -> Set[PoetryPackage]:
-    """Using a poetry object identify all dependencies of a specific dependency
-
-    :param poetry: Populated poetry object which can be used to build a populated locked
-                   repository object.
-    :param dependency_name: Bare name (without version) of the dependency to fetch the transient
-                            dependencies of.
-    :returns: List of packages that need to be installed for the requested dependency.
-
-    .. note:: The package corresponding to the dependency named by ``dependency_name`` is included
-              in the list of returned packages.
-    """
-
-    try:
-
-        def find_deps_of_deps(name: str, searched: Set[str]) -> PackageMap:
-            package = packages[name]
-            local_version = Version(
-                major=sys.version_info.major,
-                minor=sys.version_info.minor,
-                patch=sys.version_info.micro,
-            )
-            transients: PackageMap = {}
-            searched.update([name])
-
-            if name in PoetryProvider.UNSAFE_PACKAGES:
-                reporter.warning(
-                    f"{constants.REPORTER_PREFIX} Installing package '{name}' using Poetry is not supported; skipping installation of package '{name}'"
-                )
-                reporter.verbosity2(
-                    f"{constants.REPORTER_PREFIX} Skip {package}: designated unsafe by Poetry"
-                )
-            elif not package.python_constraint.allows(local_version):
-                reporter.verbosity2(
-                    f"{constants.REPORTER_PREFIX} Skip {package}: incompatible Python requirement '{package.python_constraint}' for current version '{local_version}'"
-                )
-            elif package.platform is not None and package.platform != sys.platform:
-                reporter.verbosity2(
-                    f"{constants.REPORTER_PREFIX} Skip {package}: incompatible platform requirement '{package.platform}' for current platform '{sys.platform}'"
-                )
-            else:
-                reporter.verbosity2(f"{constants.REPORTER_PREFIX} Include {package}")
-                transients[name] = package
-                for dep in package.requires:
-                    if dep.name not in searched:
-                        transients.update(find_deps_of_deps(dep.name, searched))
-
-            return transients
-
-        searched: Set[str] = set()
-        transients: PackageMap = find_deps_of_deps(
-            packages[dependency_name].name, searched
+def check_preconditions(venv: ToxVirtualEnv, action: ToxAction) -> "_poetry.Poetry":
+    """Check that the local project environment meets expectations"""
+    # Skip running the plugin for the provisioning environment. The provisioned environment,
+    # for alternative Tox versions and/or the ``requires`` meta dependencies is specially
+    # handled by Tox and is out of scope for this plugin. Since one of the ways to install this
+    # plugin in the first place is via the Tox provisioning environment, it quickly becomes a
+    # chicken-and-egg problem.
+    if action.name == venv.envconfig.config.provision_tox_env:
+        raise exceptions.SkipEnvironment(
+            f"Skipping Tox provisioning env '{action.name}'"
        )

-        return set(transients.values())
-    except KeyError:
-        if any(
-            delimiter in dependency_name
-            for delimiter in constants.PEP508_VERSION_DELIMITERS
-        ):
-            raise exceptions.LockedDepVersionConflictError(
-                f"Locked dependency '{dependency_name}' cannot include version specifier"
-            ) from None
-        raise exceptions.LockedDepNotFoundError(
-            f"No version of locked dependency '{dependency_name}' found in the project lockfile"
-        ) from None
-
-
-def check_preconditions(venv: ToxVirtualEnv, action: ToxAction) -> Poetry:
-    """Check that the local project environment meets expectations"""
    # Skip running the plugin for the packaging environment. PEP-517 front ends can handle
    # that better than we can, so let them do their thing. More to the point: if you're having
    # problems in the packaging env that this plugin would solve, god help you.
@@ -124,8 +43,10 @@ def check_preconditions(venv: ToxVirtualEnv, action: ToxAction) -> Poetry:
            f"Skipping isolated packaging build env '{action.name}'"
        )

+    from tox_poetry_installer import _poetry
+
    try:
-        return PoetryFactory().create_poetry(venv.envconfig.config.toxinidir)
+        return _poetry.Factory().create_poetry(venv.envconfig.config.toxinidir)
    # Support running the plugin when the current tox project does not use Poetry for its
    # environment/dependency management.
    #
@@ -135,3 +56,167 @@ def check_preconditions(venv: ToxVirtualEnv, action: ToxAction) -> Poetry:
        raise exceptions.SkipEnvironment(
            "Project does not use Poetry for env management, skipping installation of locked dependencies"
        ) from None
+
+
+def convert_virtualenv(venv: ToxVirtualEnv) -> "_poetry.VirtualEnv":
+    """Convert a Tox venv to a Poetry venv
+
+    :param venv: Tox ``VirtualEnv`` object representing a tox virtual environment
+    :returns: Poetry ``VirtualEnv`` object representing a poetry virtual environment
+    """
+    from tox_poetry_installer import _poetry
+
+    return _poetry.VirtualEnv(path=Path(venv.envconfig.envdir))
+
+
+def identify_transients(
+    dep: Union[PoetryDependency, str],
+    packages: PackageMap,
+    venv: "_poetry.VirtualEnv",
+    allow_missing: Sequence[str] = (),
+) -> List[PoetryPackage]:
+    """Using a pool of packages, identify all transient dependencies of a given package name
+
+    :param dep: Either the Poetry dependency or the dependency's bare package name to recursively
+                identify the transient dependencies of
+    :param packages: All packages from the lockfile to use for identifying dependency relationships.
+    :param venv: Poetry virtual environment to use for package compatibility checks
+    :param allow_missing: Sequence of package names to allow to be missing from the lockfile. Any
+                          packages that are not found in the lockfile but their name appears in this
+                          list will be silently skipped from installation.
+    :returns: List of packages that need to be installed for the requested dependency.
+
+    .. note:: The package corresponding to the dependency specified by the ``dep`` parameter will
+              be included in the returned list of packages.
+    """
+    transients: List[PoetryPackage] = []
+    searched: Set[str] = set()
+
+    def _deps_of_dep(transient: PoetryDependency):
+        searched.add(transient.name)
+
+        if venv.is_valid_for_marker(transient.marker):
+            for requirement in packages[transient.name].requires:
+                if requirement.name not in searched:
+                    _deps_of_dep(requirement)
+            logger.debug(f"Including {transient} for installation")
+            transients.append(packages[transient.name])
+        else:
+            logger.debug(f"Skipping {transient}: package requires {transient.marker}")
+
+    try:
+        if isinstance(dep, str):
+            dep = packages[dep].to_dependency()
+
+        _deps_of_dep(dep)
+    except KeyError as err:
+        dep_name = err.args[0]
+
+        if dep_name in constants.UNSAFE_PACKAGES:
+            logger.warning(
+                f"Installing package '{dep_name}' using Poetry is not supported and will be skipped"
+            )
+            logger.debug(f"Skipping {dep_name}: designated unsafe by Poetry")
+            return []
+
+        if dep_name in allow_missing:
+            logger.debug(f"Skipping {dep_name}: package is allowed to be unlocked")
+            return []
+
+        if any(
+            delimiter in dep_name for delimiter in constants.PEP508_VERSION_DELIMITERS
+        ):
+            raise exceptions.LockedDepVersionConflictError(
+                f"Locked dependency '{dep_name}' cannot include version specifier"
+            ) from None
+
+        raise exceptions.LockedDepNotFoundError(
+            f"No version of locked dependency '{dep_name}' found in the project lockfile"
+        ) from None
+
+    return transients
+
+
+def find_project_deps(
+    packages: PackageMap,
+    venv: "_poetry.VirtualEnv",
+    poetry: "_poetry.Poetry",
+    extras: Sequence[str] = (),
+) -> List[PoetryPackage]:
+    """Find the root project dependencies
+
+    Recursively identify the dependencies of the root project package
+
+    :param packages: Mapping of all locked package names to their corresponding package object
+    :param venv: Poetry virtual environment to use for package compatibility checks
+    :param poetry: Poetry object for the current project
+    :param extras: Sequence of extra names to include the dependencies of
+    """
+
+    base_deps: List[PoetryPackage] = [
+        packages[item.name]
+        for item in poetry.package.requires
+        if not item.is_optional()
+    ]
+
+    extra_deps: List[PoetryPackage] = []
+    for extra in extras:
+        logger.info(f"Processing project extra '{extra}'")
+        try:
+            extra_deps += [packages[item.name] for item in poetry.package.extras[extra]]
+        except KeyError:
+            raise exceptions.ExtraNotFoundError(
+                f"Environment specifies project extra '{extra}' which was not found in the lockfile"
+            ) from None
+
+    dependencies: List[PoetryPackage] = []
+    for dep in base_deps + extra_deps:
+        dependencies += identify_transients(
+            dep.name.lower(), packages, venv, allow_missing=[poetry.package.name]
+        )
+
+    return dependencies
+
+
+def find_additional_deps(
+    packages: PackageMap,
+    venv: "_poetry.VirtualEnv",
+    poetry: "_poetry.Poetry",
+    dep_names: Sequence[str],
+) -> List[PoetryPackage]:
+    """Find additional dependencies
+
+    Recursively identify the dependencies of an arbitrary list of package names
+
+    :param packages: Mapping of all locked package names to their corresponding package object
+    :param venv: Poetry virtual environment to use for package compatibility checks
+    :param poetry: Poetry object for the current project
+    :param dep_names: Sequence of additional dependency names to recursively find the transient
+                      dependencies for
+    """
+    deps: List[PoetryPackage] = []
+    for dep_name in dep_names:
+        deps += identify_transients(
+            dep_name.lower(), packages, venv, allow_missing=[poetry.package.name]
+        )
+
+    return deps
+
+
+def find_dev_deps(
+    packages: PackageMap, venv: "_poetry.VirtualEnv", poetry: "_poetry.Poetry"
+) -> List[PoetryPackage]:
+    """Find the dev dependencies
+
+    Recursively identify the Poetry dev dependencies
+
+    :param packages: Mapping of all locked package names to their corresponding package object
+    :param venv: Poetry virtual environment to use for package compatibility checks
+    :param poetry: Poetry object for the current project
+    """
+    return find_additional_deps(
+        packages,
+        venv,
+        poetry,
+        poetry.pyproject.data["tool"]["poetry"].get("dev-dependencies", {}).keys(),
+    )
Author	SHA1	Message	Date
Ethan Paul	e745c7684a	Merge pull request #57 from enpaul/enp/meta Update meta ahead of release	2021-04-19 23:53:32 -04:00
Ethan Paul	7152e4e94f	Update CI workflow to use parallelized install Remove deprecated runtime option from CI	2021-04-19 23:48:38 -04:00
Ethan Paul	6d97919138	Update toxfile to use new config options Remove unnecessarily duplicated config options	2021-04-19 23:47:32 -04:00
Ethan Paul	e99cf09caf	Update changelog with v0.7.0	2021-04-19 23:43:38 -04:00
Ethan Paul	1a5ba01c2f	Standardize package description	2021-04-19 23:39:32 -04:00
Ethan Paul	6d51d166a7	Bump feature version	2021-04-19 23:38:36 -04:00
Ethan Paul	bfcf8b14dd	Merge pull request #56 from enpaul/enp/req Update require_poetry option to be available in the testenv settings	2021-04-19 23:37:11 -04:00
Ethan Paul	1f449c038f	Update badges	2021-04-19 23:32:26 -04:00
Ethan Paul	efdc2f7f26	Update documentation with new option details	2021-04-19 23:32:26 -04:00
Ethan Paul	c8d7009200	Update require_poetry option to be config option rather than runtime Add deprecation warning for future removal of runtime require_poetry option	2021-04-19 23:32:25 -04:00
Ethan Paul	1e04edef69	Merge pull request #55 from enpaul/enp/docs Overhaul documentation to improve readability (again)	2021-04-19 23:12:19 -04:00
Ethan Paul	cddfdba0ae	Overhaul documentation to improve readability (again)	2021-04-19 23:01:02 -04:00
Ethan Paul	a337ed8a97	Merge pull request #50 from enpaul/enp/tests Add initial round of tests	2021-04-16 22:42:08 -04:00
Ethan Paul	d5f13ccea9	Fix toxfile config errors Fix invalid path in pytest command causing coverage to fail to report Fix missing dependency in static tests env Fix misspelled config argument in static-tests and security envs	2021-04-16 22:35:32 -04:00
Ethan Paul	0b13ff508b	Fix linting errors and add docs to test functions	2021-04-16 22:35:32 -04:00
Ethan Paul	37cce37e05	Add tests for the transient dependency identification function	2021-04-16 22:35:32 -04:00
Ethan Paul	4d2c2e6297	Update unsafe packages set to use internal constant One less thing that ties us to poetry proper	2021-04-16 22:35:31 -04:00
Ethan Paul	17a1ff1bc0	Add tests for the venv installation function	2021-04-16 22:34:48 -04:00
Ethan Paul	fc40c96954	Add test project and initial test fixtures	2021-04-16 22:34:48 -04:00
Ethan Paul	ab4fc1197f	Merge pull request #49 from enpaul/enp/log Add internal logging wrapper to reduce copy/paste	2021-04-16 20:16:38 -04:00
Ethan Paul	f55f12b447	Update plugin modules to use internal logging wrapper	2021-04-16 20:12:27 -04:00
Ethan Paul	31e08c9475	Add internal logging wrapper to reduce copy/paste	2021-04-16 20:08:58 -04:00
Ethan Paul	9d06dbeba8	Merge pull request #47 from enpaul/enp/parallel Add support for parallelizing installs	2021-04-16 18:14:02 -04:00
Ethan Paul	5e33af6eb2	Add config support for the parallelization functionality	2021-04-16 18:09:12 -04:00
Ethan Paul	06fcd56172	Add support to the installer for parallizing dependency installs	2021-04-16 18:01:00 -04:00
Ethan Paul	af40c5a87b	Merge pull request #46 from enpaul/enp/md Update markdown formatting	2021-04-16 17:53:57 -04:00
Ethan Paul	51f4f33481	Add precommit hook for enforcing markdown format with mdformat	2021-04-16 02:06:30 -04:00
Ethan Paul	19828a92f0	Format markdown files with mdformat	2021-04-16 01:57:42 -04:00
Ethan Paul	17fc1bdef6	Add mdformat dependencies	2021-04-16 01:57:42 -04:00
Ethan Paul	4092a0da4b	Update changelog with v0.6.4	2021-02-15 22:44:56 -05:00
Ethan Paul	333bbe665f	Merge pull request #44 from enpaul/enp/resolver Fix compatibility check failures in the core resolver	2021-02-15 22:36:08 -05:00
Ethan Paul	34454e1856	Fix function docstrings missing new parameters	2021-02-15 22:32:16 -05:00
Ethan Paul	41b6cfdf54	Add missing python3 classifier	2021-02-15 22:22:51 -05:00
Ethan Paul	65187eeac2	Bump patch version	2021-02-15 22:22:51 -05:00
Ethan Paul	7f0aeaf539	Update core dep resolution functionality to use poetry compat checks Remove custom package compatibility checks Add checks using poetry's built in package compatibility checking using markers Update venv integration to use poetry's venv processing tools Remove unused constants	2021-02-15 22:22:51 -05:00
Ethan Paul	d2779de848	Update changelog with v0.6.3	2021-02-10 00:35:55 -05:00
Ethan Paul	5dc5617000	Update readme badges to be prettier	2021-02-10 00:35:55 -05:00
Ethan Paul	ba5cd94b5e	Merge pull request #42 from enpaul/enp/bugs Fix non-deterministic package installation order	2021-02-10 00:19:12 -05:00
Ethan Paul	a91364efd6	Bump patch version	2021-02-10 00:07:34 -05:00
Ethan Paul	e894a25d18	Update logging messages to improve UX and output consistency	2021-02-10 00:07:34 -05:00
Ethan Paul	08a6962d3f	General refactoring Fix some pseudo-hungarian type notation Fix out of date docstrings Fix arbitrary argument ordering in function signatures Remove interchangable usage of dep/dependency variable naming Remove interchangable usage of packages/package_map for same data	2021-02-10 00:07:34 -05:00
Ethan Paul	b8ea98b3ad	Move install function to dedicated submodule Fix duplicate package installs caused by using list for ordering	2021-02-10 00:07:34 -05:00
Ethan Paul	ea8bc3887e	Fix non-deterministic dependency order resolution Unordered sets strike again. By casting a list of packages to a set to ensure uniqueness the installation of the packages becomes non-deterministic. This is not great, but it trivially breaks installing packages that require their dependencies for installation. Fixes #41	2021-02-10 00:07:33 -05:00
Ethan Paul	52c08e9dc5	Update import pattern to use tox module namespacing where possible	2021-02-10 00:07:33 -05:00
Ethan Paul	ee5df2f17a	Update pre-commit config to follow best practices https://github.com/pre-commit/pre-commit/issues/1790	2021-02-09 20:20:47 -05:00
Ethan Paul	46b8fcc2a4	Update tox dependency spec from ^3.0 to ^3.8 for compatibility	2021-01-27 21:29:14 -05:00
Ethan Paul	469ce4c905	Update feature roadmap with latest changes	2021-01-27 18:05:58 -05:00
Ethan Paul	5b5896191f	Clarify local dev requirements	2021-01-27 18:04:02 -05:00
Ethan Paul	cc54e6243a	Add dev makefile target for setting up the local dev env	2021-01-27 18:00:24 -05:00
Ethan Paul	e3b3b19b31	Merge pull request #39 from enpaul/enp/bugfixes Misc Bugfixes	2021-01-22 19:27:43 -05:00
Ethan Paul	99d6eedff1	Fix CI running all tox envs instead of targeted envs Yaml formatting quirks strike again	2021-01-22 19:23:35 -05:00
Ethan Paul	ff09706648	Update changelog with v0.6.2	2021-01-22 19:18:54 -05:00
Ethan Paul	9ec64cf98f	Bump patch version	2021-01-22 19:13:42 -05:00
Ethan Paul	59bf9ad26e	Add precondition check for skipping tox self-provisioned env Fixes #35	2021-01-22 19:13:42 -05:00
Ethan Paul	366c50ac87	Update transient dep resolution to always exclude root package name Fixes #37	2021-01-22 19:13:42 -05:00
Ethan Paul	6e535f0f42	Merge pull request #38 from enpaul/enp/fix-ci Fix CI Error	2021-01-22 18:39:07 -05:00
Ethan Paul	af66cd6d06	Fix changelog URL formatting	2021-01-22 18:28:12 -05:00
Ethan Paul	f6c8001546	Update py to 1.10+ to address CVE-2020-29651	2021-01-22 17:55:31 -05:00
Ethan Paul	b62e13afc7	Add link to changelog	2021-01-16 21:39:34 -05:00
Ethan Paul	c119e3b9d4	Add changelog Fixes #36	2021-01-16 21:33:28 -05:00
Ethan Paul	0614913cc5	Merge pull request #34 from enpaul/enp/fix-unsafe Fix unsafe dependency handling	2020-12-16 20:37:35 -05:00
Ethan Paul	f116ffefa2	Fix special handling of unsafe dependencies as primary dependencies	2020-12-16 20:31:41 -05:00
Ethan Paul	2ce97a5349	Bump patch version	2020-12-16 19:16:38 -05:00
Ethan Paul	e77c859355	Add additional logging to dependency processing functionality Hopefully this will help with dependency resolution errors in the future	2020-12-16 19:14:03 -05:00
Ethan Paul	c1d1ac2de1	Update handling of poetrys unsafe dependencies to avoid keyerror Fixes #33	2020-12-16 19:01:20 -05:00
Ethan Paul	c5c5261a80	Update transient processing to more narrowly scope error catching	2020-12-16 18:47:27 -05:00
Ethan Paul	ff344c2b4b	Merge pull request #32 from enpaul/enp/docs Beta > Alpha	2020-12-05 18:37:24 -05:00
Ethan Paul	a7d9b25b62	Fix broken links in readme	2020-12-05 18:31:44 -05:00
Ethan Paul	8356d52c4f	Update project project status from alpha to beta 🎉	2020-12-05 18:31:44 -05:00
Ethan Paul	1941a103d3	Update contributor, devel, and roadmap documentation	2020-12-05 18:31:44 -05:00
Ethan Paul	0ad5fb7219	Overhaul basic usage documentation to improve clarity Add intra document links Update to document new/updated features Add badge for downloads per month Update badge order	2020-12-05 18:30:09 -05:00
Ethan Paul	ea518d1201	Reorder TOC Add garbage to email to (hopefully) avoid scraping	2020-12-05 18:30:09 -05:00
Ethan Paul	03f46d34f3	Rewrite usage reference documentation to improve clarity Add more details to error documentation Update error and option documentation to be referenceable via slugs Add docs for missing --require-poetry option Add more crosslinks to assit with navigation	2020-12-05 18:30:09 -05:00
Ethan Paul	88ca772111	Merge pull request #31 from enpaul/enp/force-fail Add option to support forcing tox failure when Poetry is not available	2020-12-05 15:11:31 -05:00
Ethan Paul	66c1925679	Add poetry requirement to local CI to ensure proper installation	2020-12-05 15:01:39 -05:00
Ethan Paul	99edc1c24e	Add runtime option for forcing error if poetry is not found	2020-12-05 15:01:39 -05:00
Ethan Paul	39439f132a	Merge pull request #30 from enpaul/enp/cleanup Misc fixes ahead of push to beta classification	2020-12-05 14:19:18 -05:00
Ethan Paul	52aaeba93c	Overhaul CI to improve resilance and efficiency Add caching for pip and poetry downloads to reduce runtime Add pinned pip version Add poetry installation of local project Remove bare pip install for local project installation	2020-12-05 14:12:50 -05:00
Ethan Paul	db761d49c1	Add poetry extra install to tox config to support CI	2020-12-05 12:36:09 -05:00
Ethan Paul	5a23c05f17	Add internally proxied poetry module to support runtime in non-Poetry envs Add the _poetry submodule to support importing Poetry internals at runtime rather than import time. This allows the plugin to be run, and either skipped or errored, without crashing tox	2020-12-04 22:16:36 -05:00
Ethan Paul	604e60d567	Bump feature version	2020-12-04 17:57:44 -05:00
Ethan Paul	872f6b0892	Update poetry dependency to be installed as optional extra When running 'poetry remove tox-poetry-installer' in the same env as poetry is installed to, poetry will uninstall itself. This is, obviously, not ideal. This change makes poetry an optional dependency so that the plugin can be installed (and uninstalled) alongside poetry in the same env without breaking the poetry installation. The intention is that the plugin can be installed with the 'poetry' extra when being installed to an isolated environment where poetry is not otherwise available. This is a mitigation of Issue #2 as an alternative to vendorization of the enitre poetry project 😬	2020-12-04 17:57:38 -05:00
Ethan Paul	afad7663f0	Fix clean target not deleting pycache	2020-12-04 17:22:52 -05:00
Ethan Paul	01635c50c7	Update logging integration to improve standardization Standardize language in logging messages Move system version to constants Fixes #3	2020-12-04 17:22:41 -05:00
Ethan Paul	bd8124dcbf	Move non-hook function out of hooks submodule	2020-12-04 16:09:40 -05:00