lix/maintainers/build-release-notes.py

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from collections import defaultdict
import frontmatter
import sys
import pathlib
import textwrap
from typing import Any, Tuple
GH_BASE = "https://github.com/NixOS/nix"
FORGEJO_BASE = "https://git.lix.systems/lix-project/lix"
GERRIT_BASE = "https://gerrit.lix.systems/c/lix/+"
KNOWN_KEYS = ('synopsis', 'cls', 'issues', 'prs', 'significance', 'category', 'credits')
SIGNIFICANCECES = {
None: 0,
'significant': 10,
}
# This is just hardcoded for better validation. If you think there should be
# more of them, feel free to add more.
CATEGORIES = [
'Breaking Changes',
'Features',
'Improvements',
'Fixes',
'Packaging',
'Miscellany',
]
def format_link(ident: str, gh_part: str, fj_part: str) -> str:
# FIXME: deprecate github as default
if ident.isdigit():
num, link, base = int(ident), f"#{ident}", f"{GH_BASE}/{gh_part}"
elif ident.startswith("gh#"):
num, link, base = int(ident[3:]), ident, f"{GH_BASE}/{gh_part}"
elif ident.startswith("fj#"):
num, link, base = int(ident[3:]), ident, f"{FORGEJO_BASE}/{fj_part}"
else:
raise Exception("unrecognized reference format", ident)
return f"[{link}]({base}/{num})"
def format_issue(issue: str) -> str:
return format_link(issue, "issues", "issues")
def format_pr(pr: str) -> str:
return format_link(pr, "pull", "pulls")
def format_cl(clid: int) -> str:
return f"[cl/{clid}]({GERRIT_BASE}/{clid})"
def plural_list(strs: list[str]) -> str:
if len(strs) <= 1:
return ''.join(strs)
else:
comma = ',' if len(strs) >= 3 else ''
return '{}{} and {}'.format(', '.join(strs[:-1]), comma, strs[-1])
def listify(l: list | int) -> list:
if not isinstance(l, list):
return [l]
else:
return l
def do_category(entries: list[Tuple[pathlib.Path, Any]]):
for p, entry in sorted(entries, key=lambda e: (-SIGNIFICANCECES[e[1].metadata.get('significance')], e[0])):
try:
header = entry.metadata['synopsis']
links = []
links += [format_issue(str(s)) for s in listify(entry.metadata.get('issues', []))]
links += [format_pr(str(s)) for s in listify(entry.metadata.get('prs', []))]
links += [format_cl(cl) for cl in listify(entry.metadata.get('cls', []))]
if links != []:
header += " " + " ".join(links)
if header:
print(f"- {header}")
print()
print(textwrap.indent(entry.content, ' '))
if credits := listify(entry.metadata.get('credits', [])):
print()
print(textwrap.indent('Many thanks to {} for this.'.format(plural_list(credits)), ' '))
except Exception as e:
e.add_note(f"in {p}")
raise
def run_on_dir(d):
d = pathlib.Path(d)
if not d.is_dir():
raise ValueError(f'provided path {d} is not a directory')
paths = pathlib.Path(d).glob('*.md')
entries = defaultdict(list)
for p in paths:
try:
e = frontmatter.load(p)
if 'synopsis' not in e.metadata:
raise Exception('missing synopsis')
unknownKeys = set(e.metadata.keys()) - set(KNOWN_KEYS)
if unknownKeys:
raise Exception('unknown keys', unknownKeys)
category = e.metadata.get('category', 'Miscellany')
if category not in CATEGORIES:
raise Exception('unknown category', category)
entries[category].append((p, e))
except Exception as e:
e.add_note(f"in {p}")
raise
for category in CATEGORIES:
if entries[category]:
print('\n#', category)
do_category(entries[category])
if __name__ == '__main__':
for d in sys.argv[1:]:
run_on_dir(d)