release.py: Add changelog.rst conversion to markdown

.github/workflows/make_release.yaml

@@ -12,8 +12,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-    - name: Install pandoc
-      run: sudo apt update && sudo apt install pandoc -y
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
@@ -25,7 +23,7 @@ jobs:
       - uses: EndBug/add-and-commit@v9
         name: Commit the changes
         with:
-        message: 'Increment version numbers to ${{ inputs.version }}'
+          message: "Increment version numbers to ${{ inputs.version }}"
 
   build:
     runs-on: ubuntu-latest
@@ -55,6 +53,14 @@ jobs:
     needs: build
     steps:
       - uses: actions/checkout@v4
+      - name: Install pandoc
+        run: sudo apt update && sudo apt install pandoc -y
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.9"
+      - name: Obtain the changelog
+        run: echo CHANGELOG="$(python ./extra/release.py changelog)" >> $GITHUB_ENV
       - name: Bump version and push tag
         id: tag_version
         uses: mathieudutour/github-tag-action@v6.1
@@ -71,7 +77,7 @@ jobs:
         with:
           tag: ${{ steps.tag_version.outputs.new_tag }}
           name: Release ${{ steps.tag_version.outputs.new_tag }}
-          body: "Check [here](https://beets.readthedocs.io/en/stable/changelog.html) for the latest changes."
+          body: ${{ env.CHANGELOG }}
           artifacts: dist/*
 
   publish_to_pypi:
@@ -90,5 +96,3 @@ jobs:
           path: dist/
       - name: Publish distribution 📦 to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
-  
-            

extra/release.py

@@ -5,6 +5,7 @@
 from __future__ import annotations
 
 import re
+import subprocess
 from datetime import datetime, timezone
 from pathlib import Path
 from typing import Callable
@@ -14,6 +15,13 @@ from packaging.version import Version, parse
 
 BASE = Path(__file__).parent.parent.absolute()
 BEETS_INIT = BASE / "beets" / "__init__.py"
+CHANGELOG = BASE / "docs" / "changelog.rst"
+
+MD_CHANGELOG_SECTION_LIST = re.compile(r"- .+?(?=\n\n###|$)", re.DOTALL)
+version_header = r"\d+\.\d+\.\d+ \([^)]+\)"
+RST_LATEST_CHANGES = re.compile(
+    rf"{version_header}\n--+\s+(.+?)\n\n+{version_header}", re.DOTALL
+)
 
 
 def update_docs_config(text: str, new: Version) -> str:
@@ -48,13 +56,10 @@ FILENAME_AND_UPDATE_TEXT: list[tuple[Path, UpdateVersionCallable]] = [
             r"(?<=__version__ = )[^\n]+", f'"{new}"', text
         ),
     ),
-    (BASE / "docs" / "changelog.rst", update_changelog),
+    (CHANGELOG, update_changelog),
     (BASE / "docs" / "conf.py", update_docs_config),
 ]
 
-GITHUB_USER = "beetbox"
-GITHUB_REPO = "beets"
-
 
 def validate_new_version(
     ctx: click.Context, param: click.Argument, value: Version
@@ -84,6 +89,54 @@ def bump_version(new: Version) -> None:
             f.truncate()
 
 
+def rst2md(text: str) -> str:
+    """Use Pandoc to convert text from ReST to Markdown."""
+    # Other backslashes with verbatim ranges.
+    rst = re.sub(r"(?<=[\s(])`([^`]+)`(?=[^_])", r"``\1``", text)
+
+    # Bug numbers.
+    rst = re.sub(r":bug:`(\d+)`", r":bug: (#\1)", rst)
+
+    # Users.
+    rst = re.sub(r":user:`(\w+)`", r"@\1", rst)
+    return (
+        subprocess.check_output(
+            ["/usr/bin/pandoc", "--from=rst", "--to=gfm", "--wrap=none"],
+            input=rst.encode(),
+        )
+        .decode()
+        .strip()
+    )
+
+
+def changelog_as_markdown() -> str:
+    """Get the latest changelog entry as hacked up Markdown."""
+    with CHANGELOG.open() as f:
+        contents = f.read()
+
+    m = RST_LATEST_CHANGES.search(contents)
+    rst = m.group(1) if m else ""
+
+    # Convert with Pandoc.
+    md = rst2md(rst)
+
+    # Make sections stand out
+    md = re.sub(r"^(\w.+?):$", r"### \1", md, flags=re.M)
+
+    # Highlight plugin names
+    md = re.sub(
+        r"^- `/?plugins/(\w+)`:?", r"- Plugin **`\1`**:", md, flags=re.M
+    )
+
+    # Highlights command names.
+    md = re.sub(r"^- `(\w+)-cmd`:?", r"- Command **`\1`**:", md, flags=re.M)
+
+    # sort list items alphabetically for each of the sections
+    return MD_CHANGELOG_SECTION_LIST.sub(
+        lambda m: "\n".join(sorted(m.group().splitlines())), md
+    )
+
+
 @click.group()
 def cli():
     pass
@@ -96,5 +149,11 @@ def bump(version: Version) -> None:
     bump_version(version)
 
 
+@cli.command()
+def changelog():
+    """Get the most recent version's changelog as Markdown."""
+    print(changelog_as_markdown())
+
+
 if __name__ == "__main__":
     cli()