67ec6371d5
This allows one to specify "related packages" in NixOS that get rendered into the configuration.nix(5) man page. The interface philosophy is pretty much stolen from TeX bibliography.
307 lines
11 KiB
Nix
307 lines
11 KiB
Nix
{ pkgs, options, config, version, revision, extraSources ? [] }:
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with pkgs;
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let
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lib = pkgs.lib;
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# Remove invisible and internal options.
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optionsList = lib.filter (opt: opt.visible && !opt.internal) (lib.optionAttrSetToDocList options);
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# Replace functions by the string <function>
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substFunction = x:
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if builtins.isAttrs x then lib.mapAttrs (name: substFunction) x
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else if builtins.isList x then map substFunction x
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else if builtins.isFunction x then "<function>"
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else x;
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# Generate DocBook documentation for a list of packages
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genRelatedPackages = packages:
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let
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unpack = p: if lib.isString p then { name = p; } else p;
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describe = { name, package ? pkgs.${name}, comment ? "" }:
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"<listitem>"
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+ "<para><option>pkgs.${name}</option> (${package.name}): ${package.meta.description or "???"}.</para>"
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+ lib.optionalString (comment != "") "\n<para>${comment}</para>"
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# Lots of `longDescription's break DocBook, so we just wrap them into <programlisting>
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+ lib.optionalString (package.meta ? longDescription) "\n<programlisting>${package.meta.longDescription}</programlisting>"
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+ "</listitem>";
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in "<itemizedlist>${lib.concatStringsSep "\n" (map (p: describe (unpack p)) packages)}</itemizedlist>";
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optionsList' = lib.flip map optionsList (opt: opt // {
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# Clean up declaration sites to not refer to the NixOS source tree.
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declarations = map stripAnyPrefixes opt.declarations;
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}
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// lib.optionalAttrs (opt ? example) { example = substFunction opt.example; }
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// lib.optionalAttrs (opt ? default) { default = substFunction opt.default; }
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// lib.optionalAttrs (opt ? type) { type = substFunction opt.type; }
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// lib.optionalAttrs (opt ? relatedPackages) { relatedPackages = genRelatedPackages opt.relatedPackages; });
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# We need to strip references to /nix/store/* from options,
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# including any `extraSources` if some modules came from elsewhere,
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# or else the build will fail.
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#
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# E.g. if some `options` came from modules in ${pkgs.customModules}/nix,
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# you'd need to include `extraSources = [ pkgs.customModules ]`
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prefixesToStrip = map (p: "${toString p}/") ([ ../../.. ] ++ extraSources);
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stripAnyPrefixes = lib.flip (lib.fold lib.removePrefix) prefixesToStrip;
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# Custom "less" that pushes up all the things ending in ".enable*"
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# and ".package"
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optionListLess = a: b:
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let
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splt = lib.splitString ".";
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ise = lib.hasPrefix "enable";
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isp = lib.hasPrefix "package";
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cmp = lib.splitByAndCompare ise lib.compare
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(lib.splitByAndCompare isp lib.compare lib.compare);
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in lib.compareLists cmp (splt a) (splt b) < 0;
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# Customly sort option list for the man page.
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optionsList'' = lib.sort (a: b: optionListLess a.name b.name) optionsList';
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# Convert the list of options into an XML file.
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optionsXML = builtins.toFile "options.xml" (builtins.toXML optionsList'');
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optionsDocBook = runCommand "options-db.xml" {} ''
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optionsXML=${optionsXML}
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if grep /nixpkgs/nixos/modules $optionsXML; then
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echo "The manual appears to depend on the location of Nixpkgs, which is bad"
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echo "since this prevents sharing via the NixOS channel. This is typically"
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echo "caused by an option default that refers to a relative path (see above"
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echo "for hints about the offending path)."
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exit 1
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fi
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${libxslt.bin}/bin/xsltproc \
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--stringparam revision '${revision}' \
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-o $out ${./options-to-docbook.xsl} $optionsXML
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'';
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sources = lib.sourceFilesBySuffices ./. [".xml"];
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modulesDoc = builtins.toFile "modules.xml" ''
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<section xmlns:xi="http://www.w3.org/2001/XInclude" id="modules">
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${(lib.concatMapStrings (path: ''
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<xi:include href="${path}" />
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'') (lib.catAttrs "value" config.meta.doc))}
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</section>
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'';
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copySources =
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''
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cp -prd $sources/* . # */
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chmod -R u+w .
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ln -s ${modulesDoc} configuration/modules.xml
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ln -s ${optionsDocBook} options-db.xml
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printf "%s" "${version}" > version
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'';
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toc = builtins.toFile "toc.xml"
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''
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<toc role="chunk-toc">
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<d:tocentry xmlns:d="http://docbook.org/ns/docbook" linkend="book-nixos-manual"><?dbhtml filename="index.html"?>
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<d:tocentry linkend="ch-options"><?dbhtml filename="options.html"?></d:tocentry>
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<d:tocentry linkend="ch-release-notes"><?dbhtml filename="release-notes.html"?></d:tocentry>
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</d:tocentry>
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</toc>
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'';
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manualXsltprocOptions = toString [
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"--param section.autolabel 1"
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"--param section.label.includes.component.label 1"
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"--stringparam html.stylesheet style.css"
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"--param xref.with.number.and.title 1"
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"--param toc.section.depth 3"
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"--stringparam admon.style ''"
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"--stringparam callout.graphics.extension .gif"
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"--stringparam current.docid manual"
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"--param chunk.section.depth 0"
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"--param chunk.first.sections 1"
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"--param use.id.as.filename 1"
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"--stringparam generate.toc 'book toc appendix toc'"
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"--stringparam chunk.toc ${toc}"
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];
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manual-combined = runCommand "nixos-manual-combined"
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{ inherit sources;
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buildInputs = [ libxml2 libxslt ];
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meta.description = "The NixOS manual as plain docbook XML";
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}
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''
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${copySources}
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xmllint --xinclude --output ./manual-combined.xml ./manual.xml
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xmllint --xinclude --noxincludenode \
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--output ./man-pages-combined.xml ./man-pages.xml
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# outputs the context of an xmllint error output
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# LEN lines around the failing line are printed
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function context {
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# length of context
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local LEN=6
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# lines to print before error line
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local BEFORE=4
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# xmllint output lines are:
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# file.xml:1234: there was an error on line 1234
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while IFS=':' read -r file line rest; do
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echo
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if [[ -n "$rest" ]]; then
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echo "$file:$line:$rest"
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local FROM=$(($line>$BEFORE ? $line - $BEFORE : 1))
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# number lines & filter context
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nl --body-numbering=a "$file" | sed -n "$FROM,+$LEN p"
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else
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if [[ -n "$line" ]]; then
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echo "$file:$line"
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else
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echo "$file"
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fi
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fi
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done
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}
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function lintrng {
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xmllint --debug --noout --nonet \
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--relaxng ${docbook5}/xml/rng/docbook/docbook.rng \
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"$1" \
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2>&1 | context 1>&2
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# ^ redirect assumes xmllint doesn’t print to stdout
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}
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lintrng manual-combined.xml
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lintrng man-pages-combined.xml
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mkdir $out
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cp manual-combined.xml $out/
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cp man-pages-combined.xml $out/
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'';
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olinkDB = runCommand "manual-olinkdb"
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{ inherit sources;
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buildInputs = [ libxml2 libxslt ];
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}
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''
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xsltproc \
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${manualXsltprocOptions} \
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--stringparam collect.xref.targets only \
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--stringparam targets.filename "$out/manual.db" \
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--nonet \
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${docbook5_xsl}/xml/xsl/docbook/xhtml/chunktoc.xsl \
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${manual-combined}/manual-combined.xml
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cat > "$out/olinkdb.xml" <<EOF
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE targetset SYSTEM
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"file://${docbook5_xsl}/xml/xsl/docbook/common/targetdatabase.dtd" [
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<!ENTITY manualtargets SYSTEM "file://$out/manual.db">
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]>
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<targetset>
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<targetsetinfo>
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Allows for cross-referencing olinks between the manpages
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and manual.
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</targetsetinfo>
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<document targetdoc="manual">&manualtargets;</document>
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</targetset>
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EOF
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'';
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in rec {
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# The NixOS options in JSON format.
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optionsJSON = runCommand "options-json"
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{ meta.description = "List of NixOS options in JSON format";
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}
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''
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# Export list of options in different format.
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dst=$out/share/doc/nixos
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mkdir -p $dst
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cp ${builtins.toFile "options.json" (builtins.unsafeDiscardStringContext (builtins.toJSON
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(builtins.listToAttrs (map (o: { name = o.name; value = removeAttrs o ["name" "visible" "internal"]; }) optionsList'))))
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} $dst/options.json
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mkdir -p $out/nix-support
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echo "file json $dst/options.json" >> $out/nix-support/hydra-build-products
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''; # */
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# Generate the NixOS manual.
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manual = runCommand "nixos-manual"
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{ inherit sources;
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buildInputs = [ libxml2 libxslt ];
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meta.description = "The NixOS manual in HTML format";
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allowedReferences = ["out"];
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}
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''
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# Generate the HTML manual.
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dst=$out/share/doc/nixos
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mkdir -p $dst
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xsltproc \
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${manualXsltprocOptions} \
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--stringparam target.database.document "${olinkDB}/olinkdb.xml" \
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--nonet --output $dst/ \
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${docbook5_xsl}/xml/xsl/docbook/xhtml/chunktoc.xsl \
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${manual-combined}/manual-combined.xml
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mkdir -p $dst/images/callouts
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cp ${docbook5_xsl}/xml/xsl/docbook/images/callouts/*.gif $dst/images/callouts/
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cp ${./style.css} $dst/style.css
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mkdir -p $out/nix-support
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echo "nix-build out $out" >> $out/nix-support/hydra-build-products
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echo "doc manual $dst" >> $out/nix-support/hydra-build-products
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''; # */
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manualEpub = runCommand "nixos-manual-epub"
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{ inherit sources;
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buildInputs = [ libxml2 libxslt zip ];
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}
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''
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# Generate the epub manual.
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dst=$out/share/doc/nixos
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xsltproc \
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${manualXsltprocOptions} \
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--stringparam target.database.document "${olinkDB}/olinkdb.xml" \
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--nonet --xinclude --output $dst/epub/ \
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${docbook5_xsl}/xml/xsl/docbook/epub/docbook.xsl \
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${manual-combined}/manual-combined.xml
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mkdir -p $dst/epub/OEBPS/images/callouts
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cp -r ${docbook5_xsl}/xml/xsl/docbook/images/callouts/*.gif $dst/epub/OEBPS/images/callouts # */
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echo "application/epub+zip" > mimetype
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manual="$dst/nixos-manual.epub"
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zip -0Xq "$manual" mimetype
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cd $dst/epub && zip -Xr9D "$manual" *
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rm -rf $dst/epub
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mkdir -p $out/nix-support
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echo "doc-epub manual $manual" >> $out/nix-support/hydra-build-products
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'';
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# Generate the NixOS manpages.
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manpages = runCommand "nixos-manpages"
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{ inherit sources;
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buildInputs = [ libxml2 libxslt ];
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allowedReferences = ["out"];
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}
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''
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# Generate manpages.
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mkdir -p $out/share/man
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xsltproc --nonet \
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--param man.output.in.separate.dir 1 \
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--param man.output.base.dir "'$out/share/man/'" \
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--param man.endnotes.are.numbered 0 \
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--param man.break.after.slash 1 \
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--stringparam target.database.document "${olinkDB}/olinkdb.xml" \
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${docbook5_xsl}/xml/xsl/docbook/manpages/docbook.xsl \
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${manual-combined}/man-pages-combined.xml
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'';
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}
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