nixpkgs-suyu/nixos/doc/manual/default.nix
pennae 54f4992e80 nixos/manual: render html with nixos-render-doc if !allowDocBook
this reproduces the docbook-generated html manual exactly enough to
appease the compare workflows while we still support both toolchains.
it's also a lot faster than the docbook toolchain, rendering the entire
html manual in about two seconds on this machine (while docbook needs
about 20).
2023-02-21 18:26:41 +01:00

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{ pkgs
, options
, config
, version
, revision
, extraSources ? []
, baseOptionsJSON ? null
, warningsAreErrors ? true
, allowDocBook ? true
, prefix ? ../../..
}:
with pkgs;
let
inherit (lib) hasPrefix removePrefix;
lib = pkgs.lib;
docbook_xsl_ns = pkgs.docbook-xsl-ns.override {
withManOptDedupPatch = true;
};
manpageUrls = pkgs.path + "/doc/manpage-urls.json";
# We need to strip references to /nix/store/* from options,
# including any `extraSources` if some modules came from elsewhere,
# or else the build will fail.
#
# E.g. if some `options` came from modules in ${pkgs.customModules}/nix,
# you'd need to include `extraSources = [ pkgs.customModules ]`
prefixesToStrip = map (p: "${toString p}/") ([ prefix ] ++ extraSources);
stripAnyPrefixes = lib.flip (lib.foldr lib.removePrefix) prefixesToStrip;
optionsDoc = buildPackages.nixosOptionsDoc {
inherit options revision baseOptionsJSON warningsAreErrors allowDocBook;
transformOptions = opt: opt // {
# Clean up declaration sites to not refer to the NixOS source tree.
declarations = map stripAnyPrefixes opt.declarations;
};
};
nixos-lib = import ../../lib { };
testOptionsDoc = let
eval = nixos-lib.evalTest {
# Avoid evaluating a NixOS config prototype.
config.node.type = lib.types.deferredModule;
options._module.args = lib.mkOption { internal = true; };
};
in buildPackages.nixosOptionsDoc {
inherit (eval) options;
inherit revision;
transformOptions = opt: opt // {
# Clean up declaration sites to not refer to the NixOS source tree.
declarations =
map
(decl:
if hasPrefix (toString ../../..) (toString decl)
then
let subpath = removePrefix "/" (removePrefix (toString ../../..) (toString decl));
in { url = "https://github.com/NixOS/nixpkgs/blob/master/${subpath}"; name = subpath; }
else decl)
opt.declarations;
};
documentType = "none";
variablelistId = "test-options-list";
optionIdPrefix = "test-opt-";
};
toc = builtins.toFile "toc.xml"
''
<toc role="chunk-toc">
<d:tocentry xmlns:d="http://docbook.org/ns/docbook" linkend="book-nixos-manual"><?dbhtml filename="index.html"?>
<d:tocentry linkend="ch-options"><?dbhtml filename="options.html"?></d:tocentry>
<d:tocentry linkend="ch-release-notes"><?dbhtml filename="release-notes.html"?></d:tocentry>
</d:tocentry>
</toc>
'';
manualXsltprocOptions = toString [
"--param chapter.autolabel 0"
"--param part.autolabel 0"
"--param preface.autolabel 0"
"--param reference.autolabel 0"
"--param section.autolabel 0"
"--stringparam html.stylesheet 'style.css overrides.css highlightjs/mono-blue.css'"
"--stringparam html.script './highlightjs/highlight.pack.js ./highlightjs/loader.js'"
"--param xref.with.number.and.title 0"
"--param toc.section.depth 0"
"--param generate.consistent.ids 1"
"--stringparam admon.style ''"
"--stringparam callout.graphics.extension .svg"
"--stringparam current.docid manual"
"--param chunk.section.depth 0"
"--param chunk.first.sections 1"
"--param use.id.as.filename 1"
"--stringparam chunk.toc ${toc}"
];
linterFunctions = ''
# outputs the context of an xmllint error output
# LEN lines around the failing line are printed
function context {
# length of context
local LEN=6
# lines to print before error line
local BEFORE=4
# xmllint output lines are:
# file.xml:1234: there was an error on line 1234
while IFS=':' read -r file line rest; do
echo
if [[ -n "$rest" ]]; then
echo "$file:$line:$rest"
local FROM=$(($line>$BEFORE ? $line - $BEFORE : 1))
# number lines & filter context
nl --body-numbering=a "$file" | sed -n "$FROM,+$LEN p"
else
if [[ -n "$line" ]]; then
echo "$file:$line"
else
echo "$file"
fi
fi
done
}
function lintrng {
xmllint --debug --noout --nonet \
--relaxng ${docbook5}/xml/rng/docbook/docbook.rng \
"$1" \
2>&1 | context 1>&2
# ^ redirect assumes xmllint doesnt print to stdout
}
'';
prepareManualFromMD = ''
cp -r --no-preserve=all $inputs/* .
substituteInPlace ./manual.md \
--replace '@NIXOS_VERSION@' "${version}"
substituteInPlace ./configuration/configuration.md \
--replace \
'@MODULE_CHAPTERS@' \
${lib.escapeShellArg (lib.concatMapStringsSep "\n" (p: "${p.value}") config.meta.doc)}
substituteInPlace ./nixos-options.md \
--replace \
'@NIXOS_OPTIONS_JSON@' \
${optionsDoc.optionsJSON}/share/doc/nixos/options.json
substituteInPlace ./development/writing-nixos-tests.section.md \
--replace \
'@NIXOS_TEST_OPTIONS_JSON@' \
${testOptionsDoc.optionsJSON}/share/doc/nixos/options.json
'';
manual-combined = runCommand "nixos-manual-combined"
{ inputs = lib.sourceFilesBySuffices ./. [ ".xml" ".md" ];
nativeBuildInputs = [ pkgs.nixos-render-docs pkgs.libxml2.bin pkgs.libxslt.bin ];
meta.description = "The NixOS manual as plain docbook XML";
}
''
${prepareManualFromMD}
nixos-render-docs -j $NIX_BUILD_CORES manual docbook \
--manpage-urls ${manpageUrls} \
--revision ${lib.escapeShellArg revision} \
./manual.md \
./manual-combined.xml
${linterFunctions}
mkdir $out
cp manual-combined.xml $out/
lintrng $out/manual-combined.xml
'';
manpages-combined = runCommand "nixos-manpages-combined.xml"
{ nativeBuildInputs = [ buildPackages.libxml2.bin buildPackages.libxslt.bin ];
meta.description = "The NixOS manpages as plain docbook XML";
}
''
mkdir generated
cp -prd ${./man-pages.xml} man-pages.xml
ln -s ${optionsDoc.optionsDocBook} generated/options-db.xml
xmllint --xinclude --noxincludenode --output $out ./man-pages.xml
${linterFunctions}
lintrng $out
'';
in rec {
inherit (optionsDoc) optionsJSON optionsNix optionsDocBook optionsUsedDocbook;
# Generate the NixOS manual.
manualHTML = runCommand "nixos-manual-html"
{ nativeBuildInputs =
if allowDocBook then [
buildPackages.libxml2.bin
buildPackages.libxslt.bin
] else [
buildPackages.nixos-render-docs
];
inputs = lib.optionals (! allowDocBook) (lib.sourceFilesBySuffices ./. [ ".md" ]);
meta.description = "The NixOS manual in HTML format";
allowedReferences = ["out"];
}
''
# Generate the HTML manual.
dst=$out/share/doc/nixos
mkdir -p $dst
cp ${../../../doc/style.css} $dst/style.css
cp ${../../../doc/overrides.css} $dst/overrides.css
cp -r ${pkgs.documentation-highlighter} $dst/highlightjs
${if allowDocBook then ''
xsltproc \
${manualXsltprocOptions} \
--stringparam id.warnings "1" \
--nonet --output $dst/ \
${docbook_xsl_ns}/xml/xsl/docbook/xhtml/chunktoc.xsl \
${manual-combined}/manual-combined.xml \
|& tee xsltproc.out
grep "^ID recommended on" xsltproc.out &>/dev/null && echo "error: some IDs are missing" && false
rm xsltproc.out
mkdir -p $dst/images/callouts
cp ${docbook_xsl_ns}/xml/xsl/docbook/images/callouts/*.svg $dst/images/callouts/
'' else ''
${prepareManualFromMD}
# TODO generator is set like this because the docbook/md manual compare workflow will
# trigger if it's different
nixos-render-docs -j $NIX_BUILD_CORES manual html \
--manpage-urls ${manpageUrls} \
--revision ${lib.escapeShellArg revision} \
--generator "DocBook XSL Stylesheets V${docbook_xsl_ns.version}" \
--stylesheet style.css \
--stylesheet overrides.css \
--stylesheet highlightjs/mono-blue.css \
--script ./highlightjs/highlight.pack.js \
--script ./highlightjs/loader.js \
--toc-depth 1 \
--chunk-toc-depth 1 \
./manual.md \
$dst/index.html
''}
mkdir -p $out/nix-support
echo "nix-build out $out" >> $out/nix-support/hydra-build-products
echo "doc manual $dst" >> $out/nix-support/hydra-build-products
''; # */
# Alias for backward compatibility. TODO(@oxij): remove eventually.
manual = manualHTML;
# Index page of the NixOS manual.
manualHTMLIndex = "${manualHTML}/share/doc/nixos/index.html";
manualEpub = runCommand "nixos-manual-epub"
{ nativeBuildInputs = [ buildPackages.libxml2.bin buildPackages.libxslt.bin buildPackages.zip ];
}
''
# Generate the epub manual.
dst=$out/share/doc/nixos
xsltproc \
${manualXsltprocOptions} \
--nonet --xinclude --output $dst/epub/ \
${docbook_xsl_ns}/xml/xsl/docbook/epub/docbook.xsl \
${manual-combined}/manual-combined.xml
mkdir -p $dst/epub/OEBPS/images/callouts
cp -r ${docbook_xsl_ns}/xml/xsl/docbook/images/callouts/*.svg $dst/epub/OEBPS/images/callouts # */
echo "application/epub+zip" > mimetype
manual="$dst/nixos-manual.epub"
zip -0Xq "$manual" mimetype
cd $dst/epub && zip -Xr9D "$manual" *
rm -rf $dst/epub
mkdir -p $out/nix-support
echo "doc-epub manual $manual" >> $out/nix-support/hydra-build-products
'';
# Generate the NixOS manpages.
manpages = runCommand "nixos-manpages"
{ nativeBuildInputs = [
buildPackages.installShellFiles
] ++ lib.optionals allowDocBook [
buildPackages.libxml2.bin
buildPackages.libxslt.bin
] ++ lib.optionals (! allowDocBook) [
buildPackages.nixos-render-docs
];
allowedReferences = ["out"];
}
''
# Generate manpages.
mkdir -p $out/share/man/man8
installManPage ${./manpages}/*
${if allowDocBook
then ''
xsltproc --nonet \
--maxdepth 6000 \
--param man.output.in.separate.dir 1 \
--param man.output.base.dir "'$out/share/man/'" \
--param man.endnotes.are.numbered 0 \
--param man.break.after.slash 1 \
${docbook_xsl_ns}/xml/xsl/docbook/manpages/docbook.xsl \
${manpages-combined}
''
else ''
mkdir -p $out/share/man/man5
nixos-render-docs -j $NIX_BUILD_CORES options manpage \
--revision ${lib.escapeShellArg revision} \
${optionsJSON}/share/doc/nixos/options.json \
$out/share/man/man5/configuration.nix.5
''}
'';
}