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nix/doc/manual/render-manpage.sh
Robert Hensing cca8b5ca60 doc: make manpage URLs configurable based on release type
Add configurable documentation URLs that change based on whether this is
an official release or development build:

- Nix builds:
  - Development (officialRelease = false): Use /latest/ URLs
  - Official releases (officialRelease = true): Use versioned URLs with
    MAJOR.MINOR only (e.g., /2.33/ instead of /2.33.0/)
- Plain meson builds: Default to versioned URLs (official-release = true)

Changes:
- Add --doc-url parameter to expand-includes.py
- Add meson option 'official-release' (defaults to true for Meson builds)
- Compute doc_url in meson.build based on version and official-release
- Forward Nix officialRelease variable to Meson in package.nix
- Update render-manpage.sh to pass doc-url parameter

This allows distros (Fedora, etc.) to have stable versioned URLs by default,
while Nix development builds point to /latest/ for up-to-date documentation.
2025-12-06 22:13:19 +01:00

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#!/usr/bin/env bash
#
# Standalone manpage renderer that doesn't require mdbook.
# Uses expand-includes.py to preprocess markdown, then lowdown to generate manpages.
set -euo pipefail
script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
lowdown_args=
# Optional --out-no-smarty flag for compatibility with nix_nested_manpages
if [ "$1" = --out-no-smarty ]; then
lowdown_args=--out-no-smarty
shift
fi
[ "$#" = 7 ] || {
cat >&2 <<EOF
Usage: $0 [--out-no-smarty] <title> <section> <source-root> <generated-root> <doc-url> <infile> <outfile>
Arguments:
title - Manpage title (e.g., "nix-env --install")
section - Manpage section number (1, 5, 8, etc.)
source-root - Root directory of markdown sources
generated-root - Root directory of generated markdown files
doc-url - Base URL for documentation links
infile - Input markdown file (relative to build directory)
outfile - Output manpage file
Examples:
$0 "nix-store --query" 1 doc/manual/source build/doc/manual/source \\
https://nix.dev/manual/nix/latest \\
build/doc/manual/source/command-ref/nix-store/query.md nix-store-query.1
EOF
exit 1
}
title="$1"
section="$2"
source_root="$3"
generated_root="$4"
doc_url="$5"
infile="$6"
outfile="$7"
# Expand includes and pipe to lowdown
(
printf "Title: %s\n\n" "$title"
python3 "$script_dir/expand-includes.py" \
--source-root "$source_root" \
--generated-root "$generated_root" \
--doc-url "$doc_url" \
"$infile"
) | lowdown -sT man --nroff-nolinks $lowdown_args -M section="$section" -o "$outfile"