Bump minimum supported Python to 3.9

Author: ktbarrett

.github/workflows/tests.yml

@@ -89,42 +89,6 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: true
 
-  rhel8-system-python:
-    name: rhel8-system-python
-    runs-on: ubuntu-latest
-    container: "almalinux:8"
-    steps:
-      - name: Install System Python and Git
-        run: yum install -y python3-devel python3-pip python3 git
-      - uses: actions/checkout@v4
-      - name: Install Testing Requirements
-        run: python3 -m pip install nox
-      - name: Run Tests
-        run: python3 -m nox -e tests
-      # - name: Upload to codecov
-      #   uses: codecov/codecov-action@v5
-      #   with:
-      #     token: ${{ secrets.CODECOV_TOKEN }}
-      #     fail_ci_if_error: true
-
-  rhel8-appstream-py38:
-    name: rhel8-appstream-py38
-    runs-on: ubuntu-latest
-    container: "almalinux:8"
-    steps:
-      - name: Install Python 3.8 and Git from AppStream
-        run: yum install -y python38-devel python38-pip python38-pip-wheel python38 git
-      - uses: actions/checkout@v4
-      - name: Install Testing Requirements
-        run: python3.8 -m pip install nox
-      - name: Run Tests
-        run: python3.8 -m nox -e tests
-      # - name: Upload to codecov
-      #   uses: codecov/codecov-action@v5
-      #   with:
-      #     token: ${{ secrets.CODECOV_TOKEN }}
-      #     fail_ci_if_error: true
-
   rhel8-appstream-py39:
     name: rhel8-appstream-py39
     runs-on: ubuntu-latest

pyproject.toml

@@ -12,6 +12,7 @@ classifiers = [
     "Programming Language :: Python :: 3",
     "Topic :: Software Development :: Libraries",
 ]
+requires-python = ">=3.9"
 dynamic = ["version"]
 
 [project.readme]
@@ -33,7 +34,7 @@ include-package-data = false
 version = {attr = "find_libpython.__version__"}
 
 [tool.ruff]
-target-version = "py37"
+target-version = "py39"
 
 [tool.ruff.lint]
 select = [