feat: drop support for Python 3.8

Author: finswimmer

.github/workflows/tests.yaml

@@ -123,7 +123,7 @@ jobs:
             image: windows-2022
           - name: macOS aarch64
             image: macos-14
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
       fail-fast: false
 
   status:

poetry.lock

@@ -29,7 +29,7 @@ Changelog = "https://python-poetry.org/history/"
 
 # Requirements
 [tool.poetry.dependencies]
-python = "^3.8"
+python = "^3.9"
 
 poetry-core = { git = "https://github.com/python-poetry/poetry-core.git", branch = "main" }
 poetry-plugin-export = "^1.8.0"
@@ -105,7 +105,7 @@ extend-exclude = [
 ]
 fix = true
 line-length = 88
-target-version = "py38"
+target-version = "py39"
 
 [tool.ruff.lint]
 extend-select = [

pyproject.toml

@@ -7,7 +7,6 @@
 from cleo.helpers import option
 
 from poetry.console.commands.command import Command
-from poetry.utils._compat import is_relative_to
 
 
 if TYPE_CHECKING:
@@ -55,8 +54,8 @@ def handle(self) -> int:
             self.line(f"Deleted virtualenv: <comment>{venv.path}</comment>")
         if remove_all_envs or is_in_project:
             for venv in manager.list():
-                if not is_in_project or is_relative_to(
-                    venv.path, self.poetry.pyproject_path.parent
+                if not is_in_project or venv.path.is_relative_to(
+                    self.poetry.pyproject_path.parent
                 ):
                     manager.remove_venv(venv.path)
                     self.line(f"Deleted virtualenv: <comment>{venv.path}</comment>")

src/poetry/console/commands/env/remove.py

@@ -1,12 +1,11 @@
 from __future__ import annotations
 
+from collections.abc import Mapping
 from contextlib import suppress
 from pathlib import Path
 from typing import TYPE_CHECKING
 from typing import Any
 from typing import ClassVar
-from typing import Dict
-from typing import Mapping
 from typing import Union
 
 from cleo.helpers import option
@@ -26,7 +25,7 @@
 
     from poetry.repositories import RepositoryPool
 
-Requirements = Dict[str, Union[str, Mapping[str, Any]]]
+Requirements = dict[str, Union[str, Mapping[str, Any]]]
 
 
 class InitCommand(Command):

src/poetry/console/commands/init.py

@@ -9,8 +9,6 @@
 from pathlib import Path
 from typing import TYPE_CHECKING
 from typing import Any
-from typing import Mapping
-from typing import Sequence
 
 import pkginfo
 
@@ -31,6 +29,8 @@
 
 if TYPE_CHECKING:
     from collections.abc import Iterator
+    from collections.abc import Mapping
+    from collections.abc import Sequence
 
     from packaging.metadata import RawMetadata
     from packaging.utils import NormalizedName
@@ -523,7 +523,7 @@ def from_path(cls, path: Path) -> PackageInfo:
             return cls.from_sdist(path=path)
 
 
-@functools.lru_cache(maxsize=None)
+@functools.cache
 def get_pep517_metadata(path: Path) -> PackageInfo:
     """
     Helper method to use PEP-517 library to build and read package metadata.

src/poetry/inspection/info.py

@@ -6,7 +6,6 @@
 
 from typing import TYPE_CHECKING
 from typing import Optional
-from typing import Tuple
 
 from poetry.core.packages.dependency import Dependency
 
@@ -32,7 +31,7 @@
 _conflict = object()
 
 
-DependencyCacheKey = Tuple[
+DependencyCacheKey = tuple[
     str, Optional[str], Optional[str], Optional[str], Optional[str]
 ]
 

src/poetry/mixology/version_solver.py

@@ -22,7 +22,7 @@
     from poetry.utils.cache import ArtifactCache
 
 
-@functools.lru_cache(maxsize=None)
+@functools.cache
 def _get_package_from_git(
     url: str,
     branch: str | None = None,

src/poetry/packages/direct_origin.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 from typing import TYPE_CHECKING
-from typing import List
 
 from poetry.packages.dependency_package import DependencyPackage
 
@@ -13,7 +12,7 @@
     from poetry.core.packages.package import Package
 
 
-class PackageCollection(List[DependencyPackage]):
+class PackageCollection(list[DependencyPackage]):
     def __init__(
         self,
         dependency: Dependency,

src/poetry/packages/package_collection.py

@@ -5,8 +5,6 @@
 from collections import defaultdict
 from contextlib import contextmanager
 from typing import TYPE_CHECKING
-from typing import FrozenSet
-from typing import Tuple
 
 from poetry.mixology import resolve_version
 from poetry.mixology.failure import SolveFailure
@@ -197,7 +195,7 @@ def _solve(self) -> tuple[list[Package], list[int]]:
         return final_packages, depths
 
 
-DFSNodeID = Tuple[str, FrozenSet[str], bool]
+DFSNodeID = tuple[str, frozenset[str], bool]
 
 
 class DFSNode: