to be inline with the Nixpkgs manual. This makes navigating to particular sections easier.
		
			
				
	
	
		
			255 lines
		
	
	
		
			8.3 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			255 lines
		
	
	
		
			8.3 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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  # 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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  optionsDoc = buildPackages.nixosOptionsDoc {
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    inherit options revision;
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    transformOptions = 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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  };
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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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  generatedSources = runCommand "generated-docbook" {} ''
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    mkdir $out
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    ln -s ${modulesDoc} $out/modules.xml
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    ln -s ${optionsDoc.optionsDocBook} $out/options-db.xml
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    printf "%s" "${version}" > $out/version
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  '';
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  copySources =
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    ''
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      cp -prd $sources/* . # */
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      ln -s ${generatedSources} ./generated
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      chmod -R u+w .
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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 overrides.css highlightjs/mono-blue.css'"
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    "--stringparam html.script './highlightjs/highlight.pack.js ./highlightjs/loader.js'"
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    "--param xref.with.number.and.title 1"
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    "--param toc.section.depth 0"
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    "--stringparam admon.style ''"
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    "--stringparam callout.graphics.extension .svg"
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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 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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      nativeBuildInputs = [ buildPackages.libxml2.bin buildPackages.libxslt.bin ];
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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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      nativeBuildInputs = [ buildPackages.libxml2.bin buildPackages.libxslt.bin ];
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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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        ${docbook_xsl_ns}/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://${docbook_xsl_ns}/xml/xsl/docbook/common/targetdatabase.dtd" [
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        <!ENTITY manualtargets SYSTEM "file://$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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  inherit generatedSources;
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  inherit (optionsDoc) optionsJSON optionsXML optionsDocBook;
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  # Generate the NixOS manual.
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  manualHTML = runCommand "nixos-manual-html"
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    { inherit sources;
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      nativeBuildInputs = [ buildPackages.libxml2.bin buildPackages.libxslt.bin ];
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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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        --stringparam id.warnings "1" \
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        --nonet --output $dst/ \
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        ${docbook_xsl_ns}/xml/xsl/docbook/xhtml/chunktoc.xsl \
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        ${manual-combined}/manual-combined.xml \
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        |& tee xsltproc.out
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      grep "^ID recommended on" xsltproc.out &>/dev/null && echo "error: some IDs are missing" && false
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      rm xsltproc.out
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      mkdir -p $dst/images/callouts
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      cp ${docbook_xsl_ns}/xml/xsl/docbook/images/callouts/*.svg $dst/images/callouts/
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      cp ${../../../doc/style.css} $dst/style.css
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      cp ${../../../doc/overrides.css} $dst/overrides.css
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      cp -r ${pkgs.documentation-highlighter} $dst/highlightjs
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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" >> $out/nix-support/hydra-build-products
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    ''; # */
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  # Alias for backward compatibility. TODO(@oxij): remove eventually.
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  manual = manualHTML;
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  # Index page of the NixOS manual.
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  manualHTMLIndex = "${manualHTML}/share/doc/nixos/index.html";
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  manualEpub = runCommand "nixos-manual-epub"
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    { inherit sources;
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      buildInputs = [ libxml2.bin libxslt.bin 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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        ${docbook_xsl_ns}/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 ${docbook_xsl_ns}/xml/xsl/docbook/images/callouts/*.svg $dst/epub/OEBPS/images/callouts # */
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      echo "application/epub+zip" > mimetype
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      manual="$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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      nativeBuildInputs = [ buildPackages.libxml2.bin buildPackages.libxslt.bin ];
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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 $out/share/man
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      xsltproc --nonet \
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        --maxdepth 6000 \
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        --param man.output.in.separate.dir 1 \
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        --param man.output.base.dir "'$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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        ${docbook_xsl_ns}/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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