Change version to 0.9, address some review nits and use poetry 1.2 rather than pre-release.

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__ = "1.0a1"
+__version__ = "0.9.0"
 __url__ = "https://github.com/enpaul/tox-poetry-installer/"
 __license__ = "MIT"
 __authors__ = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]

tox_poetry_installer/constants.py

@@ -20,6 +20,7 @@ PEP508_VERSION_DELIMITERS: Tuple[str, ...] = ("~=", "==", "!=", ">", "<")
 REPORTER_PREFIX: str = f"{__about__.__title__}:"
 
 # Internal list of packages that poetry has deemed unsafe and are excluded from the lockfile
+# TODO: This functionality is no longer needed, should remove in a future update.
 UNSAFE_PACKAGES: Set[str] = set()
 
 # Number of threads to use for installing dependencies by default

tox_poetry_installer/hooks.py

@@ -193,7 +193,7 @@ def tox_testenv_install_deps(venv: ToxVirtualEnv, action: ToxAction) -> Optional
                 f"Identified {len(dev_deps)} development dependencies to install to env"
             )
         else:
-            dev_deps = set()
+            dev_deps = []
             logger.info("Env does not install development dependencies, skipping")
 
         env_deps = utilities.find_additional_deps(
@@ -220,7 +220,7 @@ def tox_testenv_install_deps(venv: ToxVirtualEnv, action: ToxAction) -> Optional
                 f"Identified {len(project_deps)} project dependencies to install to env"
             )
         else:
-            project_deps = set()
+            project_deps = []
             logger.info("Env does not install project package dependencies, skipping")
     except exceptions.ToxPoetryInstallerException as err:
         venv.status = err.__class__.__name__
@@ -231,7 +231,7 @@ def tox_testenv_install_deps(venv: ToxVirtualEnv, action: ToxAction) -> Optional
         logger.error(f"Internal plugin error: {err}")
         raise err
 
-    dependencies = dev_deps | env_deps | project_deps
+    dependencies = utilities.dedupe_packages(dev_deps + env_deps + project_deps)
     if (
         venv.envconfig.config.option.parallel_install_threads
         != constants.DEFAULT_INSTALL_THREADS

tox_poetry_installer/utilities.py

@@ -182,7 +182,7 @@ def find_project_deps(
     venv: "_poetry.VirtualEnv",
     poetry: "_poetry.Poetry",
     extras: Sequence[str] = (),
-) -> Set[PoetryPackage]:
+) -> List[PoetryPackage]:
     """Find the root project dependencies
 
     Recursively identify the dependencies of the root project package
@@ -218,7 +218,7 @@ def find_project_deps(
             dep_name.lower(), packages, venv, allow_missing=[poetry.package.name]
         )
 
-    return set(dependencies)
+    return dedupe_packages(dependencies)
 
 
 def find_additional_deps(
@@ -226,7 +226,7 @@ def find_additional_deps(
     venv: "_poetry.VirtualEnv",
     poetry: "_poetry.Poetry",
     dep_names: Sequence[str],
-) -> Set[PoetryPackage]:
+) -> List[PoetryPackage]:
     """Find additional dependencies
 
     Recursively identify the dependencies of an arbitrary list of package names
@@ -243,12 +243,12 @@ def find_additional_deps(
             dep_name.lower(), packages, venv, allow_missing=[poetry.package.name]
         )
 
-    return set(dependencies)
+    return dedupe_packages(dependencies)
 
 
 def find_dev_deps(
     packages: PackageMap, venv: "_poetry.VirtualEnv", poetry: "_poetry.Poetry"
-) -> Set[PoetryPackage]:
+) -> List[PoetryPackage]:
     """Find the dev dependencies
 
     Recursively identify the Poetry dev dependencies
@@ -277,4 +277,15 @@ def find_dev_deps(
     )
 
     # Poetry 1.2 unions these two toml sections.
-    return dev_group_deps | legacy_dev_group_deps
+    return dedupe_packages(dev_group_deps + legacy_dev_group_deps)
+
+
+def dedupe_packages(packages: Sequence[PoetryPackage]) -> List[PoetryPackage]:
+    """Deduplicates a sequence of PoetryPackages while preserving ordering
+
+    Adapted from StackOverflow: https://stackoverflow.com/a/480227
+    """
+    seen: Set[PoetryPackage] = set()
+    # Make this faster, avoid method lookup below
+    seen_add = seen.add
+    return [p for p in packages if not (p in seen or seen_add(p))]