Bump minimum supported Python to 3.9

.pre-commit-config.yaml

@@ -34,6 +34,7 @@ repos:
   rev: v0.7.2
   hooks:
     - id: ruff
+      args: ["--fix", "--show-fixes"]
 
 - repo: https://github.com/tox-dev/pyproject-fmt
   rev: v2.5.0

compliance_checker/__init__.py

@@ -1,6 +1,7 @@
+from collections.abc import Generator
 from contextlib import contextmanager
 from tempfile import NamedTemporaryFile
-from typing import BinaryIO, Generator
+from typing import BinaryIO
 
 try:
     from ._version import __version__

compliance_checker/base.py

@@ -24,7 +24,7 @@
 
 # Python 3.5+ should work, also have a fallback
 try:
-    from typing import Pattern
+    from re import Pattern
 
     re_pattern_type = Pattern
 except ImportError:

pyproject.toml

@@ -89,7 +89,7 @@ write_to_template = "__version__ = '{version}'"
 tag_regex = "^(?P<prefix>v)?(?P<version>[^\\+]+)(?P<suffix>.*)?$"
 
 [tool.ruff]
-target-version = "py38"
+target-version = "py39"
 line-length = 200
 
 exclude = [