diff options
| -rw-r--r-- | lib/options.nix | 9 | ||||
| -rw-r--r-- | nixos/doc/manual/default.nix | 34 | ||||
| -rw-r--r-- | nixos/doc/manual/options-to-docbook.xsl | 9 |
3 files changed, 46 insertions, 6 deletions
diff --git a/lib/options.nix b/lib/options.nix index 769d3cc5572..e10c86dd506 100644 --- a/lib/options.nix +++ b/lib/options.nix @@ -14,6 +14,7 @@ rec { , defaultText ? null # Textual representation of the default, for in the manual. , example ? null # Example value used in the manual. , description ? null # String describing the option. + , relatedPackages ? null # Related packages used in the manual (see `genRelatedPackages` in ../nixos/doc/manual/default.nix). , type ? null # Option type, providing type-checking and value merging. , apply ? null # Function that converts the option value to something else. , internal ? null # Whether the option is for NixOS developers only. @@ -76,7 +77,6 @@ rec { getValues = map (x: x.value); getFiles = map (x: x.file); - # Generate documentation template from the list of option declaration like # the set generated with filterOptionSets. optionAttrSetToDocList = optionAttrSetToDocList' []; @@ -93,9 +93,10 @@ rec { readOnly = opt.readOnly or false; type = opt.type.description or null; } - // (if opt ? example then { example = scrubOptionValue opt.example; } else {}) - // (if opt ? default then { default = scrubOptionValue opt.default; } else {}) - // (if opt ? defaultText then { default = opt.defaultText; } else {}); + // optionalAttrs (opt ? example) { example = scrubOptionValue opt.example; } + // optionalAttrs (opt ? default) { default = scrubOptionValue opt.default; } + // optionalAttrs (opt ? defaultText) { default = opt.defaultText; } + // optionalAttrs (opt ? relatedPackages && opt.relatedPackages != null) { inherit (opt) relatedPackages; }; subOptions = let ss = opt.type.getSubOptions opt.loc; diff --git a/nixos/doc/manual/default.nix b/nixos/doc/manual/default.nix index 9ee70ba59b7..66fa4f0ba43 100644 --- a/nixos/doc/manual/default.nix +++ b/nixos/doc/manual/default.nix @@ -15,13 +15,43 @@ let else if lib.isFunction x then "<function>" else x; - # Clean up declaration sites to not refer to the NixOS source tree. + # Generate DocBook documentation for a list of packages. This is + # what `relatedPackages` option of `mkOption` from + # ../../../lib/options.nix influences. + # + # Each element of `relatedPackages` can be either + # - a string: that will be interpreted as an attribute name from `pkgs`, + # - a list: that will be interpreted as an attribute path from `pkgs`, + # - an attrset: that can specify `name`, `path`, `package`, `comment` + # (either of `name`, `path` is required, the rest are optional). + genRelatedPackages = packages: + let + unpack = p: if lib.isString p then { name = p; } + else if lib.isList p then { path = p; } + else p; + describe = args: + let + name = args.name or (lib.concatStringsSep "." args.path); + path = args.path or [ args.name ]; + package = args.package or (lib.attrByPath path (throw "Invalid package attribute path `${toString path}'") pkgs); + in "<listitem>" + + "<para><literal>pkgs.${name} (${package.meta.name})</literal>" + + lib.optionalString (!package.meta.evaluates) " <emphasis>[UNAVAILABLE]</emphasis>" + + ": ${package.meta.description or "???"}.</para>" + + lib.optionalString (args ? comment) "\n<para>${args.comment}</para>" + # Lots of `longDescription's break DocBook, so we just wrap them into <programlisting> + + lib.optionalString (package.meta ? longDescription) "\n<programlisting>${package.meta.longDescription}</programlisting>" + + "</listitem>"; + in "<itemizedlist>${lib.concatStringsSep "\n" (map (p: describe (unpack p)) packages)}</itemizedlist>"; + optionsListDesc = lib.flip map optionsListVisible (opt: opt // { + # Clean up declaration sites to not refer to the NixOS source tree. declarations = map stripAnyPrefixes opt.declarations; } // lib.optionalAttrs (opt ? example) { example = substFunction opt.example; } // lib.optionalAttrs (opt ? default) { default = substFunction opt.default; } - // lib.optionalAttrs (opt ? type) { type = substFunction opt.type; }); + // lib.optionalAttrs (opt ? type) { type = substFunction opt.type; } + // lib.optionalAttrs (opt ? relatedPackages) { relatedPackages = genRelatedPackages opt.relatedPackages; }); # We need to strip references to /nix/store/* from options, # including any `extraSources` if some modules came from elsewhere, diff --git a/nixos/doc/manual/options-to-docbook.xsl b/nixos/doc/manual/options-to-docbook.xsl index 5387546b598..7b45b233ab2 100644 --- a/nixos/doc/manual/options-to-docbook.xsl +++ b/nixos/doc/manual/options-to-docbook.xsl @@ -70,6 +70,15 @@ </para> </xsl:if> + <xsl:if test="attr[@name = 'relatedPackages']"> + <para> + <emphasis>Related packages:</emphasis> + <xsl:text> </xsl:text> + <xsl:value-of disable-output-escaping="yes" + select="attr[@name = 'relatedPackages']/string/@value" /> + </para> + </xsl:if> + <xsl:if test="count(attr[@name = 'declarations']/list/*) != 0"> <para> <emphasis>Declared by:</emphasis> |