Merge pull request #42 from enpaul/enp/bugs

Fix non-deterministic package installation order

.github/workflows/ci.yaml

@@ -40,9 +40,7 @@ jobs:
       - name: Setup:env
         run: .github/scripts/setup-env.sh
       - name: Run:${{ matrix.python.toxenv }}
-        run: $HOME/ci/bin/tox \
+        run: $HOME/ci/bin/tox -e ${{ matrix.python.toxenv }} --require-poetry
-          -e ${{ matrix.python.toxenv }} \
-          --require-poetry
   Check:
     runs-on: ubuntu-latest
     steps:

.pre-commit-config.yaml

@@ -13,36 +13,57 @@
 # by the Poetry-managed dependency.
 #
 repos:
-  - repo: https://github.com/pre-commit/pre-commit-hooks
+  - repo: local
-    rev: v3.3.0
     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
+        types:
-        language: system
+          - 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

CHANGELOG.md

@@ -0,0 +1,228 @@
+# changelog
+
+See also: [Github Release Page](https://github.com/enpaul/tox-poetry-installer/releases).
+
+## 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

Makefile

@@ -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)

README.md

@@ -12,6 +12,8 @@ dependencies to be installed using [Poetry](https://python-poetry.org/) from its
 [![python-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)
 
+See the [Changelog](https://github.com/enpaul/tox-poetry-installer/blob/devel/CHANGELOG.md) for release history.
+
 **Documentation**
 
 * [Introduction](#introduction)
@@ -477,8 +479,10 @@ the [`--require-poetry`](#--require-poetry) option.
 
 ## Developing
 
-This project requires Poetry version 1.0+ on the development workstation, see
+Local development requirements:
-the [installation instructions here](https://python-poetry.org/docs/#installation).
+* Python version 3.6+ ([install](https://www.python.org/downloads/))
+* Poetry version 1.0+ ([install](https://python-poetry.org/docs/#installation))
+* GNU Make (optional, required to use the makefile)
 
 Local environment setup instructions:
 
@@ -489,15 +493,16 @@ 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/
-cd tox-poetry-installer
-poetry install -E poetry
 
-# Install pre-commit hooks
+# Create and configure the local development environment
-poetry run pre-commit install
+make dev
 
-# Run tests and static analysis
+# Run tests and CI locally
-poetry run tox
+make test
+
+# Check additional make targets
+make help
 ```
 
 **NOTE:** Because the pre-commit hooks require dependencies in the Poetry environment it
@@ -545,14 +550,14 @@ production environments on a provisional basis only.
 - [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))~
+      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.
+- [ ] ~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))~
+      ([#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))
 
@@ -560,9 +565,10 @@ production environments on a provisional basis only.
 
 Everything in Beta plus...
 
+- [ ] Fully replace dependency on `poetry` with dependency on `poetry-core` ([#2](https://github.com/enpaul/tox-poetry-installer/issues/2))
 - [ ] Add comprehensive unit tests
 - [ ] Add tests for each feature version of Tox between 3.0 and 3.20
-- [ ] Add tests for Python-3.6, 3.7, 3.8, and 3.9
+- [X] Add tests for Python-3.6, 3.7, 3.8, and 3.9
 - [X] Add Github Actions based CI
 - [ ] Add CI for CPython, PyPy, and Conda
 - [ ] Add CI for Linux and Windows

poetry.lock

@@ -71,16 +71,16 @@ python-versions = "*"
 
 [[package]]
 name = "bandit"
-version = "1.6.2"
+version = "1.7.0"
 description = "Security oriented static analyser for python code."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.5"
 
 [package.dependencies]
 colorama = {version = ">=0.3.9", markers = "platform_system == \"Windows\""}
 GitPython = ">=1.0.1"
-PyYAML = ">=3.13"
+PyYAML = ">=5.3.1"
 six = ">=1.10.0"
 stevedore = ">=1.20.0"
 
@@ -158,7 +158,7 @@ msgpack = ["msgpack-python (>=0.5,<0.6)"]
 
 [[package]]
 name = "certifi"
-version = "2020.11.8"
+version = "2020.12.5"
 description = "Python package for providing Mozilla's CA Bundle."
 category = "main"
 optional = false
@@ -185,11 +185,11 @@ python-versions = ">=3.6.1"
 
 [[package]]
 name = "chardet"
-version = "3.0.4"
+version = "4.0.0"
 description = "Universal encoding detector for Python 2 and 3"
 category = "main"
 optional = false
-python-versions = "*"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "cleo"
@@ -252,14 +252,14 @@ python-versions = ">=3.6,<4.0"
 
 [[package]]
 name = "cryptography"
-version = "3.2.1"
+version = "3.3.1"
 description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
 category = "main"
 optional = true
-python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*"
 
 [package.dependencies]
-cffi = ">=1.8,<1.11.3 || >1.11.3"
+cffi = ">=1.12"
 six = ">=1.4.1"
 
 [package.extras]
@@ -535,7 +535,7 @@ python-versions = "*"
 
 [[package]]
 name = "msgpack"
-version = "1.0.0"
+version = "1.0.1"
 description = "MessagePack (de)serializer."
 category = "main"
 optional = true
@@ -575,7 +575,7 @@ python-versions = "*"
 
 [[package]]
 name = "packaging"
-version = "20.7"
+version = "20.8"
 description = "Core utilities for Python packages"
 category = "main"
 optional = false
@@ -703,7 +703,7 @@ importlib-metadata = {version = ">=1.7.0,<2.0.0", markers = "python_version >= \
 
 [[package]]
 name = "pre-commit"
-version = "2.9.2"
+version = "2.9.3"
 description = "A framework for managing and maintaining multi-language pre-commit hooks."
 category = "dev"
 optional = false
@@ -721,7 +721,7 @@ virtualenv = ">=20.0.8"
 
 [[package]]
 name = "pre-commit-hooks"
-version = "3.3.0"
+version = "3.4.0"
 description = "Some out-of-the-box hooks for pre-commit."
 category = "dev"
 optional = false
@@ -752,7 +752,7 @@ python-versions = "*"
 
 [[package]]
 name = "py"
-version = "1.9.0"
+version = "1.10.0"
 description = "library with cross-python path, ini-parsing, io, code, log facilities"
 category = "main"
 optional = false
@@ -768,7 +768,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "pygments"
-version = "2.7.2"
+version = "2.7.3"
 description = "Pygments is a syntax highlighting package written in Python."
 category = "dev"
 optional = false
@@ -807,25 +807,24 @@ python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "pytest"
-version = "6.1.2"
+version = "6.2.1"
 description = "pytest: simple powerful testing with Python"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
 
 [package.dependencies]
 atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
-attrs = ">=17.4.0"
+attrs = ">=19.2.0"
 colorama = {version = "*", markers = "sys_platform == \"win32\""}
 importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 iniconfig = "*"
 packaging = "*"
-pluggy = ">=0.12,<1.0"
+pluggy = ">=0.12,<1.0.0a1"
 py = ">=1.8.2"
 toml = "*"
 
 [package.extras]
-checkqa_mypy = ["mypy (==0.780)"]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
 [[package]]
@@ -880,7 +879,7 @@ python-versions = ">=3.6.1"
 
 [[package]]
 name = "requests"
-version = "2.25.0"
+version = "2.25.1"
 description = "Python HTTP for Humans."
 category = "main"
 optional = false
@@ -888,7 +887,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [package.dependencies]
 certifi = ">=2017.4.17"
-chardet = ">=3.0.2,<4"
+chardet = ">=3.0.2,<5"
 idna = ">=2.5,<3"
 urllib3 = ">=1.21.1,<1.27"
 
@@ -1076,7 +1075,7 @@ socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
 
 [[package]]
 name = "virtualenv"
-version = "20.2.1"
+version = "20.2.2"
 description = "Virtual Python Environment builder"
 category = "main"
 optional = false
@@ -1136,7 +1135,7 @@ poetry = ["poetry"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6.1"
-content-hash = "a5ba6181fc3728d85a60b2e089b9afe2d5bf75f361526e6972d48a42e5075c32"
+content-hash = "6c467c16dc076332b719698f793626577eb839f286fabcfa8df8c59b5ff891ca"
 
 [metadata.files]
 appdirs = [
@@ -1168,8 +1167,8 @@ backcall = [
     {file = "backcall-0.2.0.tar.gz", hash = "sha256:5cbdbf27be5e7cfadb448baf0aa95508f91f2bbc6c6437cd9cd06e2a4c215e1e"},
 ]
 bandit = [
-    {file = "bandit-1.6.2-py2.py3-none-any.whl", hash = "sha256:336620e220cf2d3115877685e264477ff9d9abaeb0afe3dc7264f55fa17a3952"},
+    {file = "bandit-1.7.0-py3-none-any.whl", hash = "sha256:216be4d044209fa06cf2a3e51b319769a51be8318140659719aa7a115c35ed07"},
-    {file = "bandit-1.6.2.tar.gz", hash = "sha256:41e75315853507aa145d62a78a2a6c5e3240fe14ee7c601459d0df9418196065"},
+    {file = "bandit-1.7.0.tar.gz", hash = "sha256:8a4c7415254d75df8ff3c3b15cfe9042ecee628a1e40b44c15a98890fbfc2608"},
 ]
 black = [
     {file = "black-20.8b1.tar.gz", hash = "sha256:1c02557aa099101b9d21496f8a914e9ed2222ef70336404eeeac8edba836fbea"},
@@ -1191,8 +1190,8 @@ cachy = [
     {file = "cachy-0.3.0.tar.gz", hash = "sha256:186581f4ceb42a0bbe040c407da73c14092379b1e4c0e327fdb72ae4a9b269b1"},
 ]
 certifi = [
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+    {file = "msgpack-1.0.1-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:01835e300967e5ad6fdbfc36eafe74df67ff47e16e0d6dee8766630550315903"},
+    {file = "msgpack-1.0.1-cp39-cp39-win32.whl", hash = "sha256:f08d9dd3ce0c5e972dc4653f0fb66d2703941e65356388c13032b578dd718261"},
+    {file = "msgpack-1.0.1-cp39-cp39-win_amd64.whl", hash = "sha256:c144ff4954a6ea40aa603600c8be175349588fc68696092889fa34ab6e055060"},
+    {file = "msgpack-1.0.1.tar.gz", hash = "sha256:7033215267a0e9f60f4a5e4fb2228a932c404f237817caff8dc3115d9e7cd975"},
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@@ -1470,8 +1483,8 @@ nodeenv = [
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 ]
 packaging = [
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+    {file = "packaging-20.8-py2.py3-none-any.whl", hash = "sha256:24e0da08660a87484d1602c30bb4902d74816b6985b93de36926f5bc95741858"},
-    {file = "packaging-20.7.tar.gz", hash = "sha256:05af3bb85d320377db281cf254ab050e1a7ebcbf5410685a9a407e18a1f81236"},
+    {file = "packaging-20.8.tar.gz", hash = "sha256:78598185a7008a470d64526a8059de9aaa449238f280fc9eb6b13ba6c4109093"},
 ]
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@@ -1514,12 +1527,12 @@ poetry-core = [
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 ]
 pre-commit = [
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+    {file = "pre_commit-2.9.3.tar.gz", hash = "sha256:ee784c11953e6d8badb97d19bc46b997a3a9eded849881ec587accd8608d74a4"},
 ]
 pre-commit-hooks = [
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+    {file = "pre_commit_hooks-3.4.0-py2.py3-none-any.whl", hash = "sha256:b1d329fc712f53f56af7c4a0ac08c414a7fcfd634dbd829c3a03f39cfb9c3574"},
-    {file = "pre_commit_hooks-3.3.0.tar.gz", hash = "sha256:1e18c0451279fb88653c7b9f8fd73ccc35925e95b636c5b64095538f68a23b06"},
+    {file = "pre_commit_hooks-3.4.0.tar.gz", hash = "sha256:57e377b931aceead550e4a7bdbe8065e79e371e80f593b5b6d1129e63a77154f"},
 ]
 prompt-toolkit = [
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@@ -1530,16 +1543,16 @@ ptyprocess = [
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 ]
 py = [
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+    {file = "py-1.10.0-py2.py3-none-any.whl", hash = "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"},
-    {file = "py-1.9.0.tar.gz", hash = "sha256:9ca6883ce56b4e8da7e79ac18787889fa5206c79dcc67fb065376cd2fe03f342"},
+    {file = "py-1.10.0.tar.gz", hash = "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3"},
 ]
 pycparser = [
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 ]
 pygments = [
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+    {file = "Pygments-2.7.3-py3-none-any.whl", hash = "sha256:f275b6c0909e5dafd2d6269a656aa90fa58ebf4a74f8fcf9053195d226b24a08"},
-    {file = "Pygments-2.7.2.tar.gz", hash = "sha256:381985fcc551eb9d37c52088a32914e00517e57f4a21609f48141ba08e193fa0"},
+    {file = "Pygments-2.7.3.tar.gz", hash = "sha256:ccf3acacf3782cbed4a989426012f1c535c9a90d3a7fc3f16d231b9372d2b716"},
 ]
 pylev = [
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@@ -1554,8 +1567,8 @@ pyparsing = [
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 ]
 pytest = [
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+    {file = "pytest-6.2.1-py3-none-any.whl", hash = "sha256:1969f797a1a0dbd8ccf0fecc80262312729afea9c17f1d70ebf85c5e76c6f7c8"},
-    {file = "pytest-6.1.2.tar.gz", hash = "sha256:c0a7e94a8cdbc5422a51ccdad8e6f1024795939cc89159a0ae7f0b316ad3823e"},
+    {file = "pytest-6.2.1.tar.gz", hash = "sha256:66e419b1899bc27346cb2c993e12c5e5e8daba9073c1fbce33b9807abc95c306"},
 ]
 pytest-cov = [
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@@ -1576,6 +1589,8 @@ pyyaml = [
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     {file = "PyYAML-5.3.1-cp38-cp38-win32.whl", hash = "sha256:06a0d7ba600ce0b2d2fe2e78453a470b5a6e000a985dd4a4e54e436cc36b0e97"},
     {file = "PyYAML-5.3.1-cp38-cp38-win_amd64.whl", hash = "sha256:95f71d2af0ff4227885f7a6605c37fd53d3a106fcab511b8860ecca9fcf400ee"},
+    {file = "PyYAML-5.3.1-cp39-cp39-win32.whl", hash = "sha256:ad9c67312c84def58f3c04504727ca879cb0013b2517c85a9a253f0cb6380c0a"},
+    {file = "PyYAML-5.3.1-cp39-cp39-win_amd64.whl", hash = "sha256:6034f55dab5fea9e53f436aa68fa3ace2634918e8b5994d82f3621c04ff5ed2e"},
     {file = "PyYAML-5.3.1.tar.gz", hash = "sha256:b8eac752c5e14d3eca0e6dd9199cd627518cb5ec06add0de9d32baeee6fe645d"},
 ]
 regex = [
@@ -1626,8 +1641,8 @@ reorder-python-imports = [
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 ]
 requests = [
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+    {file = "requests-2.25.1-py2.py3-none-any.whl", hash = "sha256:c210084e36a42ae6b9219e00e48287def368a26d03a048ddad7bfee44f75871e"},
-    {file = "requests-2.25.0.tar.gz", hash = "sha256:7f1a0b932f4a60a1a65caa4263921bb7d9ee911957e0ae4a23a6dd08185ad5f8"},
+    {file = "requests-2.25.1.tar.gz", hash = "sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804"},
 ]
 requests-toolbelt = [
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@@ -1645,22 +1660,29 @@ requests-toolbelt = [
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     {file = "ruamel.yaml.clib-0.2.2-cp35-cp35m-macosx_10_6_intel.whl", hash = "sha256:53b9dd1abd70e257a6e32f934ebc482dac5edb8c93e23deb663eac724c30b026"},
     {file = "ruamel.yaml.clib-0.2.2-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:839dd72545ef7ba78fd2aa1a5dd07b33696adf3e68fae7f31327161c1093001b"},
+    {file = "ruamel.yaml.clib-0.2.2-cp35-cp35m-manylinux2014_aarch64.whl", hash = "sha256:1236df55e0f73cd138c0eca074ee086136c3f16a97c2ac719032c050f7e0622f"},
     {file = "ruamel.yaml.clib-0.2.2-cp35-cp35m-win32.whl", hash = "sha256:b1e981fe1aff1fd11627f531524826a4dcc1f26c726235a52fcb62ded27d150f"},
     {file = "ruamel.yaml.clib-0.2.2-cp35-cp35m-win_amd64.whl", hash = "sha256:4e52c96ca66de04be42ea2278012a2342d89f5e82b4512fb6fb7134e377e2e62"},
     {file = "ruamel.yaml.clib-0.2.2-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:a873e4d4954f865dcb60bdc4914af7eaae48fb56b60ed6daa1d6251c72f5337c"},
     {file = "ruamel.yaml.clib-0.2.2-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:ab845f1f51f7eb750a78937be9f79baea4a42c7960f5a94dde34e69f3cce1988"},
+    {file = "ruamel.yaml.clib-0.2.2-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:2fd336a5c6415c82e2deb40d08c222087febe0aebe520f4d21910629018ab0f3"},
     {file = "ruamel.yaml.clib-0.2.2-cp36-cp36m-win32.whl", hash = "sha256:e9f7d1d8c26a6a12c23421061f9022bb62704e38211fe375c645485f38df34a2"},
     {file = "ruamel.yaml.clib-0.2.2-cp36-cp36m-win_amd64.whl", hash = "sha256:2602e91bd5c1b874d6f93d3086f9830f3e907c543c7672cf293a97c3fabdcd91"},
     {file = "ruamel.yaml.clib-0.2.2-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:44c7b0498c39f27795224438f1a6be6c5352f82cb887bc33d962c3a3acc00df6"},
     {file = "ruamel.yaml.clib-0.2.2-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:8e8fd0a22c9d92af3a34f91e8a2594eeb35cba90ab643c5e0e643567dc8be43e"},
+    {file = "ruamel.yaml.clib-0.2.2-cp37-cp37m-manylinux2014_aarch64.whl", hash = "sha256:75f0ee6839532e52a3a53f80ce64925ed4aed697dd3fa890c4c918f3304bd4f4"},
     {file = "ruamel.yaml.clib-0.2.2-cp37-cp37m-win32.whl", hash = "sha256:464e66a04e740d754170be5e740657a3b3b6d2bcc567f0c3437879a6e6087ff6"},
     {file = "ruamel.yaml.clib-0.2.2-cp37-cp37m-win_amd64.whl", hash = "sha256:52ae5739e4b5d6317b52f5b040b1b6639e8af68a5b8fd606a8b08658fbd0cab5"},
     {file = "ruamel.yaml.clib-0.2.2-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:4df5019e7783d14b79217ad9c56edf1ba7485d614ad5a385d1b3c768635c81c0"},
     {file = "ruamel.yaml.clib-0.2.2-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:5254af7d8bdf4d5484c089f929cb7f5bafa59b4f01d4f48adda4be41e6d29f99"},
+    {file = "ruamel.yaml.clib-0.2.2-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:8be05be57dc5c7b4a0b24edcaa2f7275866d9c907725226cdde46da09367d923"},
     {file = "ruamel.yaml.clib-0.2.2-cp38-cp38-win32.whl", hash = "sha256:74161d827407f4db9072011adcfb825b5258a5ccb3d2cd518dd6c9edea9e30f1"},
     {file = "ruamel.yaml.clib-0.2.2-cp38-cp38-win_amd64.whl", hash = "sha256:058a1cc3df2a8aecc12f983a48bda99315cebf55a3b3a5463e37bb599b05727b"},
     {file = "ruamel.yaml.clib-0.2.2-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:c6ac7e45367b1317e56f1461719c853fd6825226f45b835df7436bb04031fd8a"},
     {file = "ruamel.yaml.clib-0.2.2-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:b4b0d31f2052b3f9f9b5327024dc629a253a83d8649d4734ca7f35b60ec3e9e5"},
+    {file = "ruamel.yaml.clib-0.2.2-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:1f8c0a4577c0e6c99d208de5c4d3fd8aceed9574bb154d7a2b21c16bb924154c"},
+    {file = "ruamel.yaml.clib-0.2.2-cp39-cp39-win32.whl", hash = "sha256:46d6d20815064e8bb023ea8628cfb7402c0f0e83de2c2227a88097e239a7dffd"},
+    {file = "ruamel.yaml.clib-0.2.2-cp39-cp39-win_amd64.whl", hash = "sha256:6c0a5dc52fc74eb87c67374a4e554d4761fd42a4d01390b7e868b30d21f4b8bb"},
     {file = "ruamel.yaml.clib-0.2.2.tar.gz", hash = "sha256:2d24bd98af676f4990c4d715bcdc2a60b19c56a3fb3a763164d2d8ca0e806ba7"},
 ]
 safety = [
@@ -1745,8 +1767,8 @@ urllib3 = [
     {file = "urllib3-1.26.2.tar.gz", hash = "sha256:19188f96923873c92ccb987120ec4acaa12f0461fa9ce5d3d0772bc965a39e08"},
 ]
 virtualenv = [
-    {file = "virtualenv-20.2.1-py2.py3-none-any.whl", hash = "sha256:07cff122e9d343140366055f31be4dcd61fd598c69d11cd33a9d9c8df4546dd7"},
+    {file = "virtualenv-20.2.2-py2.py3-none-any.whl", hash = "sha256:54b05fc737ea9c9ee9f8340f579e5da5b09fb64fd010ab5757eb90268616907c"},
-    {file = "virtualenv-20.2.1.tar.gz", hash = "sha256:e0aac7525e880a429764cefd3aaaff54afb5d9f25c82627563603f5d7de5a6e5"},
+    {file = "virtualenv-20.2.2.tar.gz", hash = "sha256:b7a8ec323ee02fb2312f098b6b4c9de99559b462775bc8fe3627a73706603c1b"},
 ]
 wcwidth = [
     {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "tox-poetry-installer"
-version = "0.6.0"
+version = "0.6.3"
 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"
@@ -39,7 +39,7 @@ poetry = ["poetry"]
 python = "^3.6.1"
 poetry = {version = "^1.0.0", optional = true}
 poetry-core = "^1.0.0"
-tox = "^3.0.0"
+tox = "^3.8.0"
 
 [tool.poetry.dev-dependencies]
 bandit = "^1.6.2"

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__ = "0.6.0"
+__version__ = "0.6.3"
 __url__ = "https://github.com/enpaul/tox-poetry-installer/"
 __license__ = "MIT"
 __authors__ = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]

tox_poetry_installer/constants.py

@@ -19,7 +19,7 @@ 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: str = f"[{__about__.__title__}]:"
+REPORTER_PREFIX: str = f"{__about__.__title__}:"
 
 
 # Semver compatible version of the current python platform version. Used for checking

tox_poetry_installer/hooks.py

@@ -4,12 +4,9 @@ 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
+import tox
-from tox import hookimpl
-from tox import reporter
 from tox.action import Action as ToxAction
 from tox.config import Parser as ToxParser
 from tox.venv import VirtualEnv as ToxVirtualEnv
@@ -17,11 +14,12 @@ from tox.venv import VirtualEnv as ToxVirtualEnv
 from tox_poetry_installer import __about__
 from tox_poetry_installer import constants
 from tox_poetry_installer import exceptions
+from tox_poetry_installer import installer
 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
 
@@ -57,7 +55,7 @@ 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
 
@@ -77,72 +75,76 @@ def tox_testenv_install_deps(venv: ToxVirtualEnv, action: ToxAction) -> Optional
             and venv.envconfig.config.option.require_poetry
         ):
             venv.status = err.__class__.__name__
-            reporter.error(str(err))
+            tox.reporter.error(str(err))
             return False
-        reporter.verbosity1(str(err))
+        tox.reporter.verbosity1(str(err))
         return None
 
-    reporter.verbosity1(
+    tox.reporter.verbosity1(
         f"{constants.REPORTER_PREFIX} Loaded project pyproject.toml from {poetry.file}"
     )
 
+    if not poetry.locker.is_fresh():
+        tox.reporter.warning(
+            f"The Poetry lock file is not up to date with the latest changes in {poetry.file}"
+        )
+
     try:
         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"
             )
 
-        package_map: PackageMap = {
+        packages: PackageMap = {
             package.name: package
             for package in poetry.locker.locked_repository(True).packages
         }
 
         if venv.envconfig.install_dev_deps:
-            dev_deps: List[PoetryPackage] = [
+            dev_deps = utilities.find_dev_deps(packages, poetry)
-                dep
+            tox.reporter.verbosity1(
-                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"
             )
+        else:
+            dev_deps = []
+            tox.reporter.verbosity1(
+                f"{constants.REPORTER_PREFIX} Env does not install development dependencies, skipping"
+            )
 
-        env_deps: List[PoetryPackage] = []
+        env_deps = utilities.find_additional_deps(
-        for dep in venv.envconfig.locked_deps:
+            packages, poetry, venv.envconfig.locked_deps
-            env_deps += utilities.find_transients(package_map, dep.lower())
+        )
-        reporter.verbosity1(
+
+        tox.reporter.verbosity1(
             f"{constants.REPORTER_PREFIX} 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] = utilities.find_project_dependencies(
+            project_deps = utilities.find_project_deps(
-                venv, poetry, package_map
+                packages, poetry, venv.envconfig.extras
+            )
+            tox.reporter.verbosity1(
+                f"{constants.REPORTER_PREFIX} Identified {len(project_deps)} project dependencies to install to env"
             )
         else:
             project_deps = []
-            reporter.verbosity1(
+            tox.reporter.verbosity1(
-                f"{constants.REPORTER_PREFIX} Skipping installation of project dependencies, env does not install project package"
+                f"{constants.REPORTER_PREFIX} Env does not install project package, skipping"
-            )
-        reporter.verbosity1(
-            f"{constants.REPORTER_PREFIX} Identified {len(project_deps)} project dependencies to install to env"
             )
     except exceptions.ToxPoetryInstallerException as err:
         venv.status = err.__class__.__name__
-        reporter.error(f"{constants.REPORTER_PREFIX} {err}")
+        tox.reporter.error(f"{constants.REPORTER_PREFIX} {err}")
         return False
     except Exception as err:
         venv.status = "InternalError"
-        reporter.error(f"{constants.REPORTER_PREFIX} Internal plugin error: {err}")
+        tox.reporter.error(f"{constants.REPORTER_PREFIX} Internal plugin error: {err}")
         raise err
 
-    dependencies = list(set(dev_deps + env_deps + project_deps))
+    dependencies = dev_deps + env_deps + project_deps
     action.setactivity(
         __about__.__title__,
         f"Installing {len(dependencies)} dependencies from Poetry lock file",
     )
-    utilities.install_to_venv(poetry, venv, dependencies)
+    installer.install(poetry, venv, dependencies)
 
     return venv.envconfig.require_locked_deps or None

tox_poetry_installer/installer.py

@@ -0,0 +1,53 @@
+"""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 typing
+from pathlib import Path
+from typing import Sequence
+from typing import Set
+
+import tox
+from poetry.core.packages import Package as PoetryPackage
+from tox.venv import VirtualEnv as ToxVirtualEnv
+
+from tox_poetry_installer import constants
+
+if typing.TYPE_CHECKING:
+    from tox_poetry_installer import _poetry
+
+
+def install(
+    poetry: "_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
+    """
+    from tox_poetry_installer import _poetry
+
+    tox.reporter.verbosity1(
+        f"{constants.REPORTER_PREFIX} Installing {len(packages)} packages to environment at {venv.envconfig.envdir}"
+    )
+
+    pip = _poetry.PipInstaller(
+        env=_poetry.VirtualEnv(path=Path(venv.envconfig.envdir)),
+        io=_poetry.NullIO(),
+        pool=poetry.pool,
+    )
+
+    installed: Set[PoetryPackage] = set()
+
+    for dependency in packages:
+        if dependency not in installed:
+            tox.reporter.verbosity2(
+                f"{constants.REPORTER_PREFIX} Installing {dependency}"
+            )
+            pip.install(dependency)
+            installed.add(dependency)
+        else:
+            tox.reporter.verbosity2(
+                f"{constants.REPORTER_PREFIX} Already installed {dependency}, skipping"
+            )

tox_poetry_installer/utilities.py

@@ -4,13 +4,12 @@
 # pylint: disable=import-outside-toplevel
 import sys
 import typing
-from pathlib import Path
 from typing import List
 from typing import Sequence
 from typing import Set
 
+import tox
 from poetry.core.packages import Package as PoetryPackage
-from tox import reporter
 from tox.action import Action as ToxAction
 from tox.venv import VirtualEnv as ToxVirtualEnv
 
@@ -22,98 +21,18 @@ if typing.TYPE_CHECKING:
     from tox_poetry_installer import _poetry
 
 
-def install_to_venv(
-    poetry: "_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
-    """
-    from tox_poetry_installer import _poetry
-
-    reporter.verbosity1(
-        f"{constants.REPORTER_PREFIX} Installing {len(packages)} packages to environment at {venv.envconfig.envdir}"
-    )
-
-    installer = _poetry.PipInstaller(
-        env=_poetry.VirtualEnv(path=Path(venv.envconfig.envdir)),
-        io=_poetry.NullIO(),
-        pool=poetry.pool,
-    )
-
-    for dependency in packages:
-        reporter.verbosity1(f"{constants.REPORTER_PREFIX} Installing {dependency}")
-        installer.install(dependency)
-
-
-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.
-    """
-    from tox_poetry_installer import _poetry
-
-    try:
-
-        def find_deps_of_deps(name: str, searched: Set[str]) -> PackageMap:
-            package = packages[name]
-            transients: PackageMap = {}
-            searched.update([name])
-
-            if name in _poetry.Provider.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(constants.PLATFORM_VERSION):
-                reporter.verbosity2(
-                    f"{constants.REPORTER_PREFIX} Skip {package}: incompatible Python requirement '{package.python_constraint}' for current version '{constants.PLATFORM_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
-        )
-
-        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.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}'"
+        )
+
     # 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.
@@ -137,40 +56,169 @@ def check_preconditions(venv: ToxVirtualEnv, action: ToxAction) -> "_poetry.Poet
         ) from None
 
 
-def find_project_dependencies(
+def identify_transients(
-    venv: ToxVirtualEnv, poetry: "_poetry.Poetry", packages: PackageMap
+    packages: PackageMap, dep_name: str, allow_missing: Sequence[str] = ()
 ) -> List[PoetryPackage]:
-    """Install the dependencies of the project package
+    """Using a pool of packages, identify all transient dependencies of a given package name
 
-    Install all primary dependencies of the project package.
+    :param packages: All packages from the lockfile to use for identifying dependency relationships.
+    :param dep_name: Bare name (without version) of the dependency to fetch the transient
+                            dependencies of.
+    :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.
 
-    :param venv: Tox virtual environment to install the packages to
+    .. note:: The package corresponding to the dependency named by ``dep_name`` is included
-    :param poetry: Poetry object the packages were sourced from
+              in the list of returned packages.
-    :param packages: Mapping of package names to the corresponding package object
+    """
+    from tox_poetry_installer import _poetry
+
+    transients: List[PoetryPackage] = []
+
+    searched: Set[PoetryPackage] = set()
+
+    def find_deps_of_deps(name: str):
+        searched.add(name)
+
+        if name in _poetry.Provider.UNSAFE_PACKAGES:
+            tox.reporter.warning(
+                f"{constants.REPORTER_PREFIX} Installing package '{name}' using Poetry is not supported and will be skipped"
+            )
+            tox.reporter.verbosity2(
+                f"{constants.REPORTER_PREFIX} Skip {name}: designated unsafe by Poetry"
+            )
+            return
+
+        try:
+            package = packages[name]
+        except KeyError as err:
+            if name in allow_missing:
+                tox.reporter.verbosity2(
+                    f"{constants.REPORTER_PREFIX} Skip {name}: package is not in lockfile but designated as allowed to be missing"
+                )
+                return
+            raise err
+
+        if not package.python_constraint.allows(constants.PLATFORM_VERSION):
+            tox.reporter.verbosity2(
+                f"{constants.REPORTER_PREFIX} Skip {package}: incompatible Python requirement '{package.python_constraint}' for current version '{constants.PLATFORM_VERSION}'"
+            )
+        elif package.platform is not None and package.platform != sys.platform:
+            tox.reporter.verbosity2(
+                f"{constants.REPORTER_PREFIX} Skip {package}: incompatible platform requirement '{package.platform}' for current platform '{sys.platform}'"
+            )
+        else:
+            for index, dep in enumerate(package.requires):
+                tox.reporter.verbosity2(
+                    f"{constants.REPORTER_PREFIX} Processing {package} dependency {index + 1}/{len(package.requires)}: {dep.name}"
+                )
+                if dep.name not in searched:
+                    find_deps_of_deps(dep.name)
+                else:
+                    tox.reporter.verbosity2(
+                        f"{constants.REPORTER_PREFIX} Skip {package}: already included for installation"
+                    )
+            tox.reporter.verbosity2(
+                f"{constants.REPORTER_PREFIX} Including {package} for installation"
+            )
+            transients.append(package)
+
+    try:
+        find_deps_of_deps(packages[dep_name].name)
+    except KeyError:
+        if dep_name in _poetry.Provider.UNSAFE_PACKAGES:
+            tox.reporter.warning(
+                f"{constants.REPORTER_PREFIX} Installing package '{dep_name}' using Poetry is not supported and will be skipped"
+            )
+            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, 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 poetry: Poetry object for the current project
+    :param extras: Sequence of extra names to include the dependencies of
     """
 
-    base_dependencies: List[PoetryPackage] = [
+    base_deps: List[PoetryPackage] = [
         packages[item.name]
         for item in poetry.package.requires
         if not item.is_optional()
     ]
 
-    extra_dependencies: List[PoetryPackage] = []
+    extra_deps: List[PoetryPackage] = []
-    for extra in venv.envconfig.extras:
+    for extra in extras:
-        reporter.verbosity1(
+        tox.reporter.verbosity1(
             f"{constants.REPORTER_PREFIX} Processing project extra '{extra}'"
         )
         try:
-            extra_dependencies += [
+            extra_deps += [packages[item.name] for item in poetry.package.extras[extra]]
-                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"
+                f"Environment specifies project extra '{extra}' which was not found in the lockfile"
             ) from None
 
     dependencies: List[PoetryPackage] = []
-    for dep in base_dependencies + extra_dependencies:
+    for dep in base_deps + extra_deps:
-        dependencies += find_transients(packages, dep.name.lower())
+        dependencies += identify_transients(
+            packages, dep.name.lower(), allow_missing=[poetry.package.name]
+        )
 
     return dependencies
+
+
+def find_additional_deps(
+    packages: PackageMap, 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 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(
+            packages, dep_name.lower(), allow_missing=[poetry.package.name]
+        )
+
+    return deps
+
+
+def find_dev_deps(
+    packages: PackageMap, 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 poetry: Poetry object for the current project
+    """
+    return find_additional_deps(
+        packages,
+        poetry,
+        poetry.pyproject.data["tool"]["poetry"].get("dev-dependencies", {}).keys(),
+    )