Drop Python 3.8 support (#465)

Now EOL:
https://discuss.python.org/t/python-3-8-is-now-officially-eol/66983 .

.github/workflows/main.yml

@@ -20,7 +20,6 @@ jobs:
     strategy:
       matrix:
         python-version:
-        - 3.8
         - 3.9
         - '3.10'
         - '3.11'

.pre-commit-config.yaml

@@ -34,7 +34,7 @@ repos:
   rev: v3.17.0
   hooks:
   - id: pyupgrade
-    args: [--py38-plus]
+    args: [--py39-plus]
 - repo: https://github.com/psf/black-pre-commit-mirror
   rev: 24.8.0
   hooks:

CHANGELOG.rst

@@ -2,6 +2,8 @@
 Changelog
 =========
 
+* Drop Python 3.8 support.
+
 * Support Python 3.13.
 
 2.11.0 (2023-07-10)

README.rst

@@ -29,7 +29,7 @@ Installation
 
 Install with ``python -m pip install pip-lock``.
 
-Python 3.8 to 3.13 supported.
+Python 3.9 to 3.13 supported.
 
 Example usage
 =============

pyproject.toml

@@ -18,15 +18,14 @@ authors = [
   { name = "Adam Johnson" },
   { name = "et al." },
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Developers",
   "License :: OSI Approved :: MIT License",
   "Operating System :: OS Independent",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -35,9 +34,7 @@ classifiers = [
   "Topic :: Utilities",
   "Typing :: Typed",
 ]
-dependencies = [
-  "importlib-metadata; python_version<'3.8'",
-]
+dependencies = [  ]
 urls = { Changelog = "https://github.com/adamchainz/pip-lock/blob/main/CHANGELOG.rst", Funding = "https://adamj.eu/books/", Repository = "https://github.com/adamchainz/pip-lock" }
 
 [tool.isort]

src/pip_lock/__init__.py

@@ -3,8 +3,8 @@
 import os
 import re
 import sys
+from collections.abc import Iterable
 from importlib.metadata import distributions as get_distributions
-from typing import Iterable
 
 
 def read_pip(filename: str) -> list[str]:

tests/requirements/compile.py

@@ -19,7 +19,6 @@
         *sys.argv[1:],
     ]
     run = partial(subprocess.run, check=True)
-    run([*common_args, "--python", "3.8", "--output-file", "py38.txt"])
     run([*common_args, "--python", "3.9", "--output-file", "py39.txt"])
     run([*common_args, "--python", "3.10", "--output-file", "py310.txt"])
     run([*common_args, "--python", "3.11", "--output-file", "py311.txt"])

tests/test_pip_lock.py

@@ -1,9 +1,9 @@
 from __future__ import annotations
 
+from collections.abc import Generator
 from contextlib import contextmanager
 from email.message import EmailMessage
 from types import SimpleNamespace
-from typing import Generator
 from unittest import mock
 
 import pytest

tox.ini

@@ -2,7 +2,7 @@
 requires =
     tox>=4.2
 env_list =
-    py{313, 312, 311, 310, 39, 38}
+    py{313, 312, 311, 310, 39}
 
 [testenv]
 package = wheel