ci: check supported versions once a week (#1419)

.github/workflows/maint-supported-versions.yml

@@ -0,0 +1,36 @@
+name: Check supported versions
+
+on:
+  schedule:
+    # Run every Sunday at 2:00 AM UTC
+    - cron: '0 2 * * 0'
+  workflow_dispatch:  # Allow manual triggering
+
+permissions:
+  contents: read
+  issues: write
+
+jobs:
+  check-versions:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v5
+    
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.13'
+        cache: "pip"
+    
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install -r requirements-dev.txt
+    
+    - name: Check supported versions
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: |
+        python scripts/supported_versions.py check

.pre-commit-config.yaml

@@ -1,10 +1,10 @@
 repos:
-- repo: https://github.com/astral-sh/ruff-pre-commit
-  # Ruff version.
-  rev: v0.12.9
+- repo: local
   hooks:
-    # Run the linter.
-    - id: ruff-check
-      args: [ --fix ]
-    # Run the formatter.
-    - id: ruff-format
+    # See https://stackoverflow.com/questions/70778806
+    - id: tox
+      name: tox
+      entry: .venv/bin/tox
+      args: ["-e", "mypy,ruff"]
+      language: system
+      pass_filenames: false

docs/community/development.md

@@ -310,14 +310,21 @@ Head over to [Dev guides](./devguides/dependency_mgmt.md) for a deep dive into h
 
 ### Updating supported versions
 
-The `scripts/supported_versions.py` script can be used to update the supported versions.
+The `scripts/supported_versions.py` script manages the supported Python and Django versions for the project.
+
+The script runs automatically via GitHub Actions once a week to check for version updates. If changes are detected, it creates a GitHub issue with the necessary updates. See the [`maint-supported-versions.yml`](https://github.com/django-components/django-components/blob/master/.github/workflows/maint-supported-versions.yml) workflow.
+
+You can also run the script manually:
 
 ```sh
-python scripts/supported_versions.py
+# Check if versions need updating
+python scripts/supported_versions.py check
+
+# Generate configuration snippets for manual updates
+python scripts/supported_versions.py generate
 ```
 
-This will check the current versions of Django and Python, and will print to the terminal
-all the places that need updating and what to set them to.
+The `generate` command will print to the terminal all the places that need updating and what to set them to.
 
 ### Updating link references
 

scripts/supported_versions.py

@@ -1,14 +1,73 @@
-# ruff: noqa: T201, S310
+# ruff: noqa: BLE001, PLW2901, RUF001, S310, T201
+"""
+This script manages the info about supported Python and Django versions.
+
+The script fetches the latest supported version information from official sources:
+- Python versions from https://devguide.python.org/versions/
+- Django versions and compatibility matrix from https://docs.djangoproject.com/
+
+Commands:
+    generate: Generates instructions for updating various files (tox.ini, pyproject.toml,
+              GitHub Actions, documentation) based on current supported versions
+
+    check:    Compares the current compatibility table in `docs/overview/compatibility.md`
+              with the latest official version information. If differences are found,
+              creates a GitHub issue to track the needed updates.
+
+Usage:
+    python scripts/supported_versions.py generate
+    python scripts/supported_versions.py check
+
+    # For GitHub issue creation (check command):
+    GITHUB_TOKEN=your_token python scripts/supported_versions.py check
+
+Files updated by this script:
+- docs/overview/compatibility.md (compatibility table)
+- tox.ini (test environments)
+- pyproject.toml (Python classifiers)
+- .github/workflows/tests.yml (CI matrix)
+- docs/community/development.md (development setup)
+"""
+
+import argparse
+import json
+import os
 import re
+import sys
 import textwrap
 from collections import defaultdict
-from typing import Any, Callable, Dict, List, Tuple
+from pathlib import Path
+from typing import Any, Callable, Dict, List, NamedTuple, Tuple
 from urllib import request
 
 Version = Tuple[int, ...]
 VersionMapping = Dict[Version, List[Version]]
 
 
+class DjangoVersionChanges(NamedTuple):
+    added: List[Version]
+    removed: List[Version]
+
+
+class VersionDifferences(NamedTuple):
+    added_python_versions: List[Version]
+    removed_python_versions: List[Version]
+    changed_django_versions: Dict[Version, DjangoVersionChanges]
+    has_changes: bool
+
+
+######################################
+# GET DATA FROM OFFICIAL SOURCES
+######################################
+
+
+HEADERS = {"User-Agent": "Mozilla/5.0 (compatible; django-components version script)"}
+
+
+def filter_dict(d: Dict, filter_fn: Callable[[Any], bool]) -> Dict:
+    return dict(filter(filter_fn, d.items()))
+
+
 def cut_by_content(content: str, cut_from: str, cut_to: str) -> str:
     return content.split(cut_from)[1].split(cut_to)[0]
 
@@ -18,7 +77,8 @@ def keys_from_content(content: str) -> List[str]:
 
 
 def get_python_supported_version(url: str) -> List[Version]:
-    with request.urlopen(url) as response:
+    req = request.Request(url, headers=HEADERS)
+    with request.urlopen(req) as response:
         response_content = response.read()
 
     content = response_content.decode("utf-8")
@@ -39,7 +99,8 @@ def get_python_supported_version(url: str) -> List[Version]:
 
 
 def get_django_to_python_versions(url: str) -> VersionMapping:
-    with request.urlopen(url) as response:
+    req = request.Request(url, headers=HEADERS)
+    with request.urlopen(req) as response:
         response_content = response.read()
 
     content = response_content.decode("utf-8")
@@ -69,7 +130,8 @@ def get_django_to_python_versions(url: str) -> VersionMapping:
 
 def get_django_supported_versions(url: str) -> List[Tuple[int, ...]]:
     """Extract Django versions from the HTML content, e.g. `5.0` or `4.2`"""
-    with request.urlopen(url) as response:
+    req = request.Request(url, headers=HEADERS)
+    with request.urlopen(req) as response:
         response_content = response.read()
 
     content = response_content.decode("utf-8")
@@ -94,7 +156,8 @@ def get_django_supported_versions(url: str) -> List[Tuple[int, ...]]:
 
 
 def get_latest_version(url: str) -> Version:
-    with request.urlopen(url) as response:
+    req = request.Request(url, headers=HEADERS)
+    with request.urlopen(req) as response:
         response_content = response.read()
 
     content = response_content.decode("utf-8")
@@ -117,6 +180,28 @@ def build_python_to_django(django_to_python: VersionMapping, latest_version: Ver
     return python_to_django
 
 
+def get_python_to_django() -> VersionMapping:
+    """Get the Python to Django version mapping as extracted from the websites."""
+    django_to_python = get_django_to_python_versions("https://docs.djangoproject.com/en/dev/faq/install/")
+    django_supported_versions = get_django_supported_versions("https://www.djangoproject.com/download/")
+    latest_version = get_latest_version("https://www.djangoproject.com/download/")
+
+    supported_django_to_python = filter_dict(django_to_python, lambda item: item[0] in django_supported_versions)
+    python_to_django = build_python_to_django(supported_django_to_python, latest_version)
+    # NOTE: Uncomment the below if you want to include only those Python versions
+    #       that are still actively supported. Otherwise, we include all Python versions
+    #       that are compatible with supported Django versions.
+    # active_python = get_python_supported_version("https://devguide.python.org/versions/")
+    # python_to_django = filter_dict(python_to_django, lambda item: item[0] in active_python)
+
+    return python_to_django
+
+
+######################################
+# GENERATE COMMAND
+######################################
+
+
 def env_format(version_tuple: Version, divider: str = "") -> str:
     return divider.join(str(num) for num in version_tuple)
 
@@ -222,26 +307,15 @@ def build_pyenv(python_to_django: VersionMapping) -> str:
 def build_ci_python_versions(python_to_django: VersionMapping) -> str:
     # Outputs python-version, like: ['3.8', '3.9', '3.10', '3.11', '3.12']
     lines = [
-        f"'{env_format(python_version, divider='.')}'" for python_version, django_versions in python_to_django.items()
+        f"'{env_format(python_version, divider='.')}'" for python_version, _django_versions in python_to_django.items()
     ]
     lines_formatted = " " * 8 + f"python-version: [{', '.join(lines)}]"
     return lines_formatted
 
 
-def filter_dict(d: Dict, filter_fn: Callable[[Any], bool]) -> Dict:
-    return dict(filter(filter_fn, d.items()))
-
-
-def main() -> None:
-    active_python = get_python_supported_version("https://devguide.python.org/versions/")
-    django_to_python = get_django_to_python_versions("https://docs.djangoproject.com/en/dev/faq/install/")
-    django_supported_versions = get_django_supported_versions("https://www.djangoproject.com/download/")
-    latest_version = get_latest_version("https://www.djangoproject.com/download/")
-
-    supported_django_to_python = filter_dict(django_to_python, lambda item: item[0] in django_supported_versions)
-    python_to_django = build_python_to_django(supported_django_to_python, latest_version)
-
-    python_to_django = filter_dict(python_to_django, lambda item: item[0] in active_python)
+def command_generate() -> None:
+    print("🔄 Fetching latest version information...")
+    python_to_django = get_python_to_django()
 
     tox_envlist = build_tox_envlist(python_to_django)
     print("Add this to tox.ini:\n")
@@ -285,5 +359,413 @@ def main() -> None:
     print()
 
 
+######################################
+# CHECK COMMAND
+######################################
+
+
+def parse_compatibility_markdown(file_path: Path) -> VersionMapping:
+    """
+    Extract compatibility table from markdown file with following format:
+
+    ```
+    | Python version | Django version |
+    |----------------|----------------|
+    | 3.9            | 4.2            |
+    | 3.10           | 4.2, 5.1, 5.2  |
+    | 3.11           | 4.2, 5.1, 5.2  |
+    | 3.12           | 4.2, 5.1, 5.2  |
+    | 3.13           | 5.1, 5.2       |
+    ```
+    """
+    try:
+        with file_path.open(encoding="utf-8") as f:
+            content = f.read()
+    except FileNotFoundError:
+        print(f"Error: Could not find compatibility file at {file_path}")
+        sys.exit(1)
+
+    # Find the table section
+    lines = content.split("\n")
+    table_start = -1
+    table_end = -1
+
+    for i, line in enumerate(lines):
+        # Search for the table headers line
+        # `| Python version | Django version |`
+        if re.search(r"\|\s*Python\s+version\s*\|\s*Django\s+version\s*\|", line, re.IGNORECASE):
+            table_start = i + 2  # Skip header and separator line
+        # Search for the end of the table
+        elif table_start != -1 and (line.strip() == "" or not line.startswith("|")):
+            table_end = i
+            break
+
+    if table_start == -1:
+        print("Error: Could not find compatibility table in markdown file")
+        sys.exit(1)
+
+    if table_end == -1:
+        # If the end of the table is not found, use the last line of the file
+        table_end = len(lines)
+
+    # Parse table rows
+    # `| 3.10           | 4.2, 5.1, 5.2  |`
+    python_to_django: VersionMapping = {}
+    for i in range(table_start, table_end):
+        # Skip empty and non-table lines
+        line = lines[i].strip()
+        if not line or not line.startswith("|"):
+            continue
+
+        # Split by | and clean up
+        parts = [part.strip() for part in line.split("|")[1:-1]]  # Remove empty first/last
+        if len(parts) != 2:
+            raise ValueError(f"Unexpected table row: {line}")
+
+        python_version_str = parts[0].strip()
+        django_versions_str = parts[1].strip()
+
+        try:
+            python_version = version_to_tuple(python_version_str)
+            django_versions = []
+            for version_str in django_versions_str.split(","):
+                version_str = version_str.strip()
+                if version_str:
+                    django_versions.append(version_to_tuple(version_str))
+
+            if django_versions:
+                python_to_django[python_version] = django_versions
+        except ValueError as e:
+            raise ValueError(f"Invalid version string in table row '{line}': {e}") from e
+
+    return python_to_django
+
+
+def compare_version_mappings(current: VersionMapping, expected: VersionMapping) -> VersionDifferences:
+    current_pythons = set(current.keys())
+    expected_pythons = set(expected.keys())
+
+    # Find added/removed Python versions
+    added_pythons = expected_pythons - current_pythons
+    removed_pythons = current_pythons - expected_pythons
+
+    added_python_versions = sorted(added_pythons)
+    removed_python_versions = sorted(removed_pythons)
+
+    # Find changed Django versions for existing Python versions
+    changed_django_versions = {}
+    common_pythons = current_pythons & expected_pythons
+    for python_version in common_pythons:
+        current_djangos = set(current[python_version])
+        expected_djangos = set(expected[python_version])
+
+        if current_djangos != expected_djangos:
+            changed_django_versions[python_version] = DjangoVersionChanges(
+                added=sorted(expected_djangos - current_djangos),
+                removed=sorted(current_djangos - expected_djangos),
+            )
+
+    # Check if there are any changes
+    has_changes = bool(added_pythons) or bool(removed_pythons) or bool(changed_django_versions)
+
+    return VersionDifferences(
+        added_python_versions=added_python_versions,
+        removed_python_versions=removed_python_versions,
+        changed_django_versions=changed_django_versions,
+        has_changes=has_changes,
+    )
+
+
+def command_check(repo_owner: str = "django-components", repo_name: str = "django-components") -> None:
+    """Check if supported versions need updating and create GitHub issue if needed"""
+    print("🔄 Checking supported versions...")
+
+    # Get current versions from markdown
+    compatibility_file = Path("docs/overview/compatibility.md")
+    try:
+        current_python_to_django = parse_compatibility_markdown(compatibility_file)
+        print(f"📖 Parsed current versions from {compatibility_file}")
+    except Exception as e:
+        print(f"❌ Error parsing compatibility file: {e}")
+        sys.exit(1)
+
+    # Get expected versions from official sources
+    try:
+        expected_python_to_django = get_python_to_django()
+        print("🌐 Fetched expected versions from official sources")
+    except Exception as e:
+        print(f"❌ Error fetching expected versions: {e}")
+        sys.exit(1)
+
+    # Compare versions
+    differences = compare_version_mappings(current_python_to_django, expected_python_to_django)
+
+    if not differences.has_changes:
+        print("✅ Supported versions are up to date!")
+        return
+
+    print("⚠️  Supported versions need updating!")
+
+    # Print differences
+    if differences.added_python_versions:
+        print("➕ Added Python versions:")
+        for version in differences.added_python_versions:
+            print(f"   - Python {env_format(version, divider='.')}")
+
+    if differences.removed_python_versions:
+        print("➖ Removed Python versions:")
+        for version in differences.removed_python_versions:
+            print(f"   - Python {env_format(version, divider='.')}")
+
+    if differences.changed_django_versions:
+        print("🔄 Changed Django version support:")
+        for python_version, changes in differences.changed_django_versions.items():
+            python_str = env_format(python_version, divider=".")
+            print(f"   Python {python_str}:")
+            for django_version in changes.added:
+                django_str = env_format(django_version, divider=".")
+                print(f"     ✅ Added Django {django_str}")
+            for django_version in changes.removed:
+                django_str = env_format(django_version, divider=".")
+                print(f"     ❌ Removed Django {django_str}")
+
+    # Create GitHub issue
+    github_token = os.environ.get("GITHUB_TOKEN")
+
+    if not github_token:
+        print("\n⚠️  GITHUB_TOKEN environment variable not set.")
+        print("Set GITHUB_TOKEN to create GitHub issues automatically.")
+        print("Run `python scripts/supported_versions.py generate` to get updated configurations.")
+        return
+
+    # Generate issue title and body
+    title = create_github_issue_title(differences)
+    body = generate_issue_body(differences, current_python_to_django, expected_python_to_django)
+
+    # Check for existing issues
+    print("🔍 Checking for existing issues...")
+    if check_existing_github_issue(title, repo_owner, repo_name, github_token):
+        print("ℹ️  Similar issue already exists. Skipping issue creation.")
+        return
+
+    # Create the issue
+    print(f"📝 Creating GitHub issue: {title}")
+    success = create_github_issue(title, body, repo_owner, repo_name, github_token)
+
+    if not success:
+        print("❌ Failed to create GitHub issue")
+        sys.exit(1)
+
+
+######################################
+# CHECK COMMAND - GITHUB ISSUE
+######################################
+
+
+def create_github_issue_title(differences: VersionDifferences) -> str:
+    """
+    Generate a GitHub issue title based on version differences
+
+    We rely on this title to find the issue in the future to avoid duplicates.
+    """
+    parts = []
+
+    if differences.added_python_versions:
+        for version in differences.added_python_versions:
+            version_str = env_format(version, divider=".")
+            parts.append(f"Add Python {version_str}")
+
+    if differences.removed_python_versions:
+        for version in differences.removed_python_versions:
+            version_str = env_format(version, divider=".")
+            parts.append(f"Remove Python {version_str}")
+
+    # Check for Django version changes
+    for python_version, changes in differences.changed_django_versions.items():
+        python_str = env_format(python_version, divider=".")
+        if changes.added:
+            for django_version in changes.added:
+                django_str = env_format(django_version, divider=".")
+                parts.append(f"Add Django {django_str} for Python {python_str}")
+        if changes.removed:
+            for django_version in changes.removed:
+                django_str = env_format(django_version, divider=".")
+                parts.append(f"Remove Django {django_str} for Python {python_str}")
+
+    if not parts:
+        return "[maint] Update supported versions"
+
+    # Create a concise title
+    if len(parts) == 1:
+        return f"[maint] {parts[0]} to supported versions"
+    return f"[maint] Update supported versions ({len(parts)} changes)"
+
+
+def check_existing_github_issue(title: str, repo_owner: str, repo_name: str, token: str) -> bool:
+    """Check if a GitHub issue with similar title already exists"""
+    # Search for issues with similar titles
+    search_url = "https://api.github.com/search/issues"
+    repo_name = f"{repo_owner}/{repo_name}"
+    params = {
+        "q": f'repo:{repo_name} is:issue "{title}"'.replace(" ", "%20"),
+        "sort": "created",
+        "order": "desc",
+    }
+
+    headers = {"Authorization": f"token {token}", "Accept": "application/vnd.github.v3+json", **HEADERS}
+
+    try:
+        # Build query string manually
+        query_string = "&".join([f"{k}={v}" for k, v in params.items()])
+        full_url = f"{search_url}?{query_string}"
+
+        req = request.Request(full_url, headers=headers)
+        with request.urlopen(req) as response:
+            data = json.loads(response.read().decode("utf-8"))
+
+        # Check if any existing issues match our pattern
+        for issue in data.get("items", []):
+            issue_title = issue["title"].lower()
+            if "supported versions" in issue_title and ("[maint]" in issue_title or "maint" in issue_title):
+                return True
+
+        return False
+    except Exception as e:
+        print(f"Warning: Could not check existing issues: {e}")
+        return False
+
+
+def create_github_issue(title: str, body: str, repo_owner: str, repo_name: str, token: str) -> bool:
+    url = f"https://api.github.com/repos/{repo_owner}/{repo_name}/issues"
+
+    data = {"title": title, "body": body, "labels": ["maintenance", "dependencies"]}
+
+    headers = {
+        "Authorization": f"token {token}",
+        "Accept": "application/vnd.github.v3+json",
+        "Content-Type": "application/json",
+        **HEADERS,
+    }
+
+    try:
+        req = request.Request(url, data=json.dumps(data).encode("utf-8"), headers=headers, method="POST")
+        with request.urlopen(req) as response:
+            if response.status == 201:
+                issue_data = json.loads(response.read().decode("utf-8"))
+                print(f"✅ Created GitHub issue: {issue_data['html_url']}")
+                return True
+            print(f"❌ Failed to create issue. Status: {response.status}")
+            return False
+    except Exception as e:
+        print(f"❌ Error creating GitHub issue: {e}")
+        return False
+
+
+def generate_issue_body(differences: VersionDifferences, _current: VersionMapping, expected: VersionMapping) -> str:
+    body = "## Supported versions need updating\n\n"
+    body += (
+        "The supported Python/Django version combinations have changed and "
+        "need to be updated in the documentation.\n\n"
+    )
+
+    if differences.added_python_versions:
+        body += "### Added Python versions\n"
+        for version in differences.added_python_versions:
+            version_str = env_format(version, divider=".")
+            body += f"- Python {version_str}\n"
+        body += "\n"
+
+    if differences.removed_python_versions:
+        body += "### Removed Python versions\n"
+        for version in differences.removed_python_versions:
+            version_str = env_format(version, divider=".")
+            body += f"- Python {version_str}\n"
+        body += "\n"
+
+    if differences.changed_django_versions:
+        body += "### Changed Django version support\n"
+        for python_version, changes in differences.changed_django_versions.items():
+            python_str = env_format(python_version, divider=".")
+            body += f"**Python {python_str}:**\n"
+            if changes.added:
+                for django_version in changes.added:
+                    django_str = env_format(django_version, divider=".")
+                    body += f"- ✅ Added Django {django_str}\n"
+            if changes.removed:
+                for django_version in changes.removed:
+                    django_str = env_format(django_version, divider=".")
+                    body += f"- ❌ Removed Django {django_str}\n"
+        body += "\n"
+
+    body += "### Expected compatibility table\n\n"
+    body += build_readme(expected)
+    body += "\n\n"
+
+    body += "### Files to update\n"
+    body += "- `docs/overview/compatibility.md`\n"
+    body += "- `tox.ini`\n"
+    body += "- `pyproject.toml`\n"
+    body += "- `.github/workflows/tests.yml`\n\n"
+
+    body += "Run `python scripts/supported_versions.py generate` to get the updated configurations."
+
+    return body
+
+
+######################################
+# MAIN
+######################################
+
+
+def create_parser() -> argparse.ArgumentParser:
+    parser = argparse.ArgumentParser(
+        description="Manage supported Python/Django version combinations",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog=textwrap.dedent("""
+            Commands:
+              generate    Generate configuration for current supported versions
+              check       Check if versions need updating and create GitHub issue
+
+            Environment variables:
+              GITHUB_TOKEN    Required for 'check' command to create GitHub issues
+
+            Examples:
+              python scripts/supported_versions.py generate
+              GITHUB_TOKEN=your_token python scripts/supported_versions.py check
+        """),
+    )
+
+    parser.add_argument("command", choices=["generate", "check"], help="Command to execute")
+
+    parser.add_argument(
+        "--repo-owner", default="django-components", help="GitHub repository owner (default: django-components)"
+    )
+
+    parser.add_argument(
+        "--repo-name", default="django-components", help="GitHub repository name (default: django-components)"
+    )
+
+    return parser
+
+
+def main() -> None:
+    parser = create_parser()
+    args = parser.parse_args()
+
+    try:
+        if args.command == "generate":
+            command_generate()
+        elif args.command == "check":
+            command_check(args.repo_owner, args.repo_name)
+        else:
+            parser.error(f"Invalid command: {args.command}")
+    except KeyboardInterrupt:
+        print("\n❌ Interrupted by user")
+        sys.exit(1)
+    except Exception as e:
+        print(f"❌ Unexpected error: {e}")
+        sys.exit(1)
+
+
 if __name__ == "__main__":
     main()