a7d75ab648
Why? Because this way configuration.nix(5) can be read linearly. Before: > virtualisation.xen.bootParams > ... > virtualisation.xen.enable > ... > virtualisation.xen.package > ... After: > virtualisation.xen.enable > virtualisation.xen.package > virtualisation.xen.bootParams > ...
292 lines
9.7 KiB
Nix
292 lines
9.7 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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optionsListVisible = 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 lib.isFunction x then "<function>"
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else x;
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# Clean up declaration sites to not refer to the NixOS source tree.
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optionsListDesc = lib.flip map optionsListVisible (opt: opt // {
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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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# 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) optionsListDesc;
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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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