Update changelog for 0.10.2

Add link to official poetry docs on tox integration
Add emojis to notes/warnings to improve ease of comprehension
Update docs with new poetry command syntax
Remove link to deprecated tox-poetry plugin
Remove docs on unsafe dependencies

.github/scripts/setup-env.sh

@@ -8,7 +8,7 @@
 set -e;
 
 CI_CACHE=$HOME/.cache;
-POETRY_VERSION=1.2.0;
+POETRY_VERSION=1.3.2;
 
 mkdir --parents "$CI_CACHE";
 

.github/workflows/ci.yaml

@@ -20,6 +20,8 @@ jobs:
             toxenv: py39
           - version: "3.10"
             toxenv: py310
+          - version: "3.11"
+            toxenv: py311
       fail-fast: true
     steps:
       - name: Checkout

CHANGELOG.md

@@ -2,13 +2,44 @@
 
 See also: [Github Release Page](https://github.com/enpaul/tox-poetry-installer/releases).
 
+## Version 0.10.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.10.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.10.2/)
+
+- Update documentation with best practices and Poetry 1.2+ command syntax
+- Fix failed install of sdist package not raising an exception in multi-threaded mode.
+  Contributed by [chriskuehl](https://github.com/chriskuehl) (#86)
+
+## Version 0.10.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.10.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.10.1/)
+
+- Add PyPI classifier for Python-3.11 compatibility
+- Add CI support for Python-3.11
+- Add support for Poetry-1.3.x (#83)
+
+## Version 0.10.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.10.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.10.0/)
+
+- Add `poetry_dep_groups` option to support installing groups of Poetry dependencies.
+  Contributed by [Oshmoun](https://github.com/oshmoun) (#76)
+- Deprecate `install_dev_deps` option
+
 ## Version 0.9.0
 
 View this release on:
 [Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.9.0),
 [PyPI](https://pypi.org/project/tox-poetry-installer/0.9.0/)
 
-- Add support for Poetry-1.2.x (#73)
+- Add support for Poetry-1.2.x. Contributed by [Justin Wood](https://github.com/Callek)
+  (#73)
 - Update Black formatting to stable release version
 - Remove support for Python-3.6
 - Remove support for Poetry-1.1.x
@@ -48,7 +79,7 @@ View this release on:
 
 - Improve debug-level logging for package installation, and time how long installing each
   package takes. Contributed by [Rebecca
-  Turner](https://github.com/9999years).
+  Turner](https://github.com/9999years) (#63).
 - Fix crash caused by the package-under-test depending on Poetry's unsafe dependencies ([#65](https://github.com/enpaul/tox-poetry-installer/issues/65))
 
 ## Version 0.8.1

Makefile

@@ -33,7 +33,7 @@ test: ## Run the project testsuite(s)
 	poetry run tox --recreate
 
 dev: ## Create the local dev environment
-	poetry install -E poetry --sync
+	poetry install --extras poetry --sync
 	poetry run pre-commit install
 
 publish: test wheel source ## Build and upload to pypi (requires $PYPI_API_KEY be set)

README.md

@@ -25,7 +25,6 @@ environment dependencies from the [Poetry](https://python-poetry.org/) lockfile.
   - [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)
@@ -34,16 +33,16 @@ See the
 [Changelog](https://github.com/enpaul/tox-poetry-installer/blob/devel/CHANGELOG.md) for
 release history.
 
-*See also: [official Tox plugins](https://tox.readthedocs.io/en/latest/plugins.html), [Poetry Tox plugin](https://github.com/tkukushkin/tox-poetry)*
+*See also: [official Tox plugins](https://tox.readthedocs.io/en/latest/plugins.html) and [the official Poetry documentation on using Tox](https://python-poetry.org/docs/faq/#is-tox-supported)*
 
 ## Feature Overview
 
 - 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
+- Add only the packages or custom groups 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.
@@ -60,10 +59,10 @@ release history.
 The recommended way to install the plugin is to add it to a project using Poetry:
 
 ```bash
-poetry add tox-poetry-installer[poetry] --dev
+poetry add -G dev tox-poetry-installer[poetry]
 ```
 
-> **Note:** Always install the plugin with the `[poetry]` extra, unless you are
+> ℹ️ **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
@@ -80,16 +79,16 @@ adding the below to `tox.ini`, though this is also not recommended:
 
 ```ini
 requires =
-    tox-poetry-installer[poetry] == 0.8.0
+    tox-poetry-installer[poetry] == 0.10.2
 ```
 
 After installing, check that Tox recognizes the plugin by running
 `poetry run tox --version`. The command should give output similar to below:
 
 ```
-3.20.0 imported from .venv/lib64/python3.8/site-packages/tox/__init__.py
+3.20.0 imported from .venv/lib64/python3.10/site-packages/tox/__init__.py
 registered plugins:
-    tox-poetry-installer-0.8.0 at .venv/lib64/python3.8/site-packages/tox_poetry_installer/__init__.py
+    tox-poetry-installer-0.10.2 at .venv/lib64/python3.10/site-packages/tox_poetry_installer/__init__.py
 ```
 
 ### Quick Start
@@ -146,23 +145,24 @@ locked_deps =
 commands = ...
 ```
 
-> **Note:** Settings configured on the main `testenv` environment are inherited by child
+> ℹ️ **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:
+the Tox config and install Poetry dependency groups directly:
 
 ```ini
 [testenv]
 description = Some very cool tests
 require_locked_deps = true
-install_dev_deps = true
+poetry_dep_groups =
+    dev
 commands = ...
 ```
 
-> **Note:** Setting `install_dev_deps = true` on an environment that also installs the
-> project package is functionally equivalent to running `poetry install`.
+> ℹ️ **Note:** The `install_dev_deps` configuration option is deprecated. See [Configuration
+> Options](#configuration-options) for more information.
 
 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
@@ -190,7 +190,7 @@ All options listed below are Tox environment options and can be applied to one o
 environment sections of the `tox.ini` file. They cannot be applied to the global Tox
 configuration section.
 
-> **Note:** Settings configured on the main `testenv` environment are inherited by child
+> ℹ️ **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.
 
@@ -198,9 +198,13 @@ configuration section.
 | :--------------------- | :-----: | :-----: | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | `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.                                                                                                                                                                                                                                                                              |
 | `install_project_deps` | Boolean |  True   | Whether all of the Poetry primary dependencies for the project package 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.                                                                                            |
+| `poetry_dep_groups`    |  List   |  `[]`   | Names of Poetry dependency groups specified in `pyproject.toml` to install to the test environment.                                                                                                                                                                                                                                                                  |
+
+> ℹ️ **Note:** The `install_dev_deps` configuration option is deprecated and will be removed
+> in version 1.0.0. Please set `poetry_dep_groups = [dev]` in `tox.ini` for environments
+> that install the development dependencies.
 
 ### Runtime Options
 
@@ -211,12 +215,12 @@ of the plugin.
 | :--------------------------- | :-----: | :-----: | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | `--parallel-install-threads` | Integer |  `10`   | 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. Pass this option with the value `0` to entirely disable parallel installation. |
 
-> **Note:** The `--require-poetry` runtime option is deprecated and will be removed in
+> ℹ️ **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.
 
-> **Note:** The `--parallelize-locked-install` option is deprecated and will be removed in
-> version 1.0.0. Please use the `--parallel-install-threads` option.
+> ℹ️ **Note:** The `--parallelize-locked-install` option is deprecated and will be removed
+> in version 1.0.0. Please use the `--parallel-install-threads` option.
 
 ### Errors
 
@@ -233,9 +237,9 @@ error will be set to one of the "Status" values below to indicate what the error
 | `PoetryNotInstalledError`       | Indicates that the `poetry` module could not be imported under the current runtime environment, and `require_poetry = true` was specified.                                                                                      |
 | `RequiresUnsafeDepError`        | Indicates that the package-under-test depends on a package that Poetry has classified as unsafe and cannot be installed.                                                                                                        |
 
-> **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.
+> ℹ️ **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
 
@@ -246,7 +250,7 @@ these options are made obsolete by the Poetry lockfile: either they aren't neede
 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
+> ℹ️ **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)
@@ -268,41 +272,24 @@ 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
+> ℹ️ **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`.
+`--no-root`, `--without dev`, or `--sync` 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.**
+> ⚠️ **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:
@@ -310,11 +297,11 @@ 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
+poetry add -G dev tox-poetry-installer
 
 # 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
+poetry add -G dev tox-poetry-installer[poetry]
 ```
 
 Once the plugin is installed- either with or without the Poetry extra- you can validate
@@ -330,8 +317,8 @@ python -c '\
 '
 ```
 
-> **Note:** To force Tox to fail if Poetry is not installed, add the `require_poetry = true`
-> option to the tox `[testenv]` configuration. See the
+> ℹ️ **Note:** To force Tox to fail if Poetry is not installed, add the
+> `require_poetry = true` option to the tox `[testenv]` configuration. See the
 > [Config Options](#configuration-options) for more information.
 
 ## Developer Documentation
@@ -352,8 +339,8 @@ are tracked on [Github](https://github.com/enpaul/tox-poetry-installer/releases)
   [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).
 
-Developing this project requires [Python 3.7+](https://www.python.org/downloads/) and
-[Poetry 1.2](https://python-poetry.org/docs/#installation) or later. GNU Make can
+Developing this project requires [Python 3.10+](https://www.python.org/downloads/) and
+[Poetry 1.4](https://python-poetry.org/docs/#installation) or later. GNU Make can
 optionally be used to quickly setup a local development environment, but this is not
 required.
 
@@ -378,9 +365,10 @@ make test
 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).
+> ℹ️ **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).
 
 ## Road Map
 

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "tox-poetry-installer"
-version = "0.9.0"
+version = "0.10.2"
 license = "MIT"
 authors = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]
 description = "A plugin for Tox that lets you install test environment dependencies from the Poetry lockfile"
@@ -27,6 +27,7 @@ classifiers = [
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: Implementation :: CPython",
 ]
 
@@ -38,7 +39,7 @@ poetry = ["poetry", "cleo"]
 
 [tool.poetry.dependencies]
 python = "^3.7"
-cleo = {version = "^1.0.0a5", optional = true, allow-prereleases = true}
+cleo = {version = ">=1.0,<3.0", optional = true}
 poetry = {version = "^1.2.0", optional = true}
 poetry-core = "^1.1.0"
 tox = "^3.8.0"
@@ -47,7 +48,7 @@ tox = "^3.8.0"
 bandit = "^1.6.2"
 black = "^22.3.0"
 blacken-docs = "^1.8.0"
-ipython = "^7.18.1"
+ipython = {version = "^8.10.1", python = "^3.8"}
 mdformat = "^0.6"
 mdformat-gfm = "^0.2"
 mypy = "^0.930"
@@ -57,10 +58,15 @@ pylint = "^2.13.0"
 pytest = "^6.0.2"
 pytest-cov = "^2.10.1"
 reorder-python-imports = "^2.3.5"
-safety = "^1.9.0"
+safety = "^2.2.0"
 toml = "^0.10.1"
 tox = "^3.20.0"
 types-toml = "^0.10.1"
+# This is a workaround for this issue with the Poetry export
+# plugin which was blocking the 'security' CI check:
+#
+# https://github.com/python-poetry/poetry-plugin-export/issues/176
+virtualenv = ">=20.15,<20.16"
 
 [build-system]
 requires = ["poetry-core>=1.1.0"]

tests/test_installer.py

@@ -1,6 +1,8 @@
 # pylint: disable=missing-module-docstring, redefined-outer-name, unused-argument, wrong-import-order, unused-import
 import time
+from unittest import mock
 
+import pytest
 import tox.venv
 from poetry.factory import Factory
 
@@ -57,3 +59,32 @@ def test_parallelization(mock_venv, mock_poetry_factory):
     assert round(parallel * 5) == round(sequential)
     assert round(sequential) == len(set(to_install))
     assert round(parallel * 5) == len(set(to_install))
+
+
+@pytest.mark.parametrize("num_threads", (0, 8))
+def test_propagates_exceptions_during_installation(
+    mock_venv, mock_poetry_factory, num_threads
+):
+    """Assert that an exception which occurs during installation is properly raised.
+
+    Regression test for https://github.com/enpaul/tox-poetry-installer/issues/86
+    """
+    from tox_poetry_installer import _poetry  # pylint: disable=import-outside-toplevel
+
+    poetry = Factory().create_poetry(None)
+    packages: utilities.PackageMap = {
+        item.name: item for item in poetry.locker.locked_repository().packages
+    }
+    to_install = [packages["toml"]]
+    venv = tox.venv.VirtualEnv()
+    fake_exception = ValueError("my testing exception")
+
+    with mock.patch.object(
+        _poetry,
+        "PipInstaller",
+        **{"return_value.install.side_effect": fake_exception},
+    ):
+        with pytest.raises(ValueError) as exc_info:
+            installer.install(poetry, venv, to_install, num_threads)
+
+    assert exc_info.value is fake_exception

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py37, py38, py39, py310, static, static-tests, security
+envlist = py37, py38, py39, py310, py311, static, static-tests, security
 isolated_build = true
 skip_missing_interpreters = true
 
@@ -83,7 +83,10 @@ commands =
       --format requirements.txt \
       --output {envtmpdir}/requirements.txt \
       --without-hashes \
-      --dev
+      --with dev \
+      --extras poetry
     safety check \
       --file {envtmpdir}/requirements.txt \
-      --json
+      --output text \
+      # https://github.com/pytest-dev/py/issues/287
+      --ignore 51457

tox_poetry_installer/__about__.py

@@ -1,7 +1,7 @@
 # pylint: disable=missing-docstring
 __title__ = "tox-poetry-installer"
 __summary__ = "A plugin for Tox that lets you install test environment dependencies from the Poetry lockfile"
-__version__ = "0.9.0"
+__version__ = "0.10.2"
 __url__ = "https://github.com/enpaul/tox-poetry-installer/"
 __license__ = "MIT"
 __authors__ = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]

tox_poetry_installer/hooks.py

@@ -4,6 +4,7 @@ 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 itertools import chain
 from typing import Optional
 
 import tox
@@ -114,7 +115,14 @@ def tox_addoption(parser: ToxParser):
         name="install_dev_deps",
         type="bool",
         default=False,
-        help="Automatically install all Poetry development dependencies to the environment",
+        help="(deprecated) Automatically install all Poetry development dependencies to the environment",
+    )
+
+    parser.add_testenv_attribute(
+        name="poetry_dep_groups",
+        type="line-list",
+        default=[],
+        help="List of Poetry dependency groups to install to the environment",
     )
 
     parser.add_testenv_attribute(
@@ -196,6 +204,20 @@ def tox_testenv_install_deps(venv: ToxVirtualEnv, action: ToxAction) -> Optional
             dev_deps = []
             logger.info("Env does not install development dependencies, skipping")
 
+        group_deps = utilities.dedupe_packages(
+            list(
+                chain(
+                    *[
+                        utilities.find_group_deps(group, packages, virtualenv, poetry)
+                        for group in venv.envconfig.poetry_dep_groups
+                    ]
+                )
+            )
+        )
+        logger.info(
+            f"Identified {len(group_deps)} group dependencies to install to env"
+        )
+
         env_deps = utilities.find_additional_deps(
             packages, virtualenv, poetry, venv.envconfig.locked_deps
         )
@@ -231,7 +253,9 @@ def tox_testenv_install_deps(venv: ToxVirtualEnv, action: ToxAction) -> Optional
         logger.error(f"Internal plugin error: {err}")
         raise err
 
-    dependencies = utilities.dedupe_packages(dev_deps + env_deps + project_deps)
+    dependencies = utilities.dedupe_packages(
+        dev_deps + group_deps + env_deps + project_deps
+    )
     if (
         venv.envconfig.config.option.parallel_install_threads
         != constants.DEFAULT_INSTALL_THREADS

tox_poetry_installer/installer.py

@@ -71,11 +71,20 @@ def install(
             yield lambda func, arg: func(arg)
 
     with _optional_parallelize() as executor:
+        futures = []
         for dependency in packages:
             if dependency not in installed:
                 installed.add(dependency)
                 logger.debug(f"Queuing {dependency}")
-                executor(logged_install, dependency)
+                future = executor(logged_install, dependency)
+                if future is not None:
+                    futures.append(future)
             else:
                 logger.debug(f"Skipping {dependency}, already installed")
         logger.debug("Waiting for installs to finish...")
+
+        for future in concurrent.futures.as_completed(futures):
+            # Don't actually care about the return value, just waiting on the
+            # future to ensure any exceptions that were raised in the called
+            # function are propagated.
+            future.result()

tox_poetry_installer/utilities.py

@@ -59,6 +59,13 @@ def check_preconditions(venv: ToxVirtualEnv, action: ToxAction) -> "_poetry.Poet
             "be removed in version 1.0.0. Please use the '--parallel-install-threads' option."
         )
 
+    if venv.envconfig.install_dev_deps:
+        logger.warning(
+            "DEPRECATION: The 'install_dev_deps' option is deprecated and will be removed in "
+            "version 1.0.0. Please update test environments that install development dependencies "
+            "to set the 'poetry_dev_groups = [dev]' option in tox.ini"
+        )
+
     from tox_poetry_installer import _poetry
 
     try:
@@ -246,6 +253,33 @@ def find_additional_deps(
     return dedupe_packages(dependencies)
 
 
+def find_group_deps(
+    group: str,
+    packages: PackageMap,
+    venv: "_poetry.VirtualEnv",
+    poetry: "_poetry.Poetry",
+) -> List[PoetryPackage]:
+    """Find the dependencies belonging to a dependency group
+
+    Recursively identify the Poetry dev dependencies
+
+    :param group: Name of the dependency group from the project's ``pyproject.toml``
+    :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("group", {})
+        .get(group, {})
+        .get("dependencies", {})
+        .keys(),
+    )
+
+
 def find_dev_deps(
     packages: PackageMap, venv: "_poetry.VirtualEnv", poetry: "_poetry.Poetry"
 ) -> List[PoetryPackage]:
@@ -257,16 +291,7 @@ def find_dev_deps(
     :param venv: Poetry virtual environment to use for package compatibility checks
     :param poetry: Poetry object for the current project
     """
-    dev_group_deps = find_additional_deps(
-        packages,
-        venv,
-        poetry,
-        poetry.pyproject.data["tool"]["poetry"]
-        .get("group", {})
-        .get("dev", {})
-        .get("dependencies", {})
-        .keys(),
-    )
+    dev_group_deps = find_group_deps("dev", packages, venv, poetry)
 
     # Legacy pyproject.toml poetry format:
     legacy_dev_group_deps = find_additional_deps(