with everything being rendered from markdown now we no longer need to postprocess any options.xml that may be requested from elsewhere. we'll don't need to keep the module path check either since that's done by optionsJSON now.
184 lines
6.8 KiB
Nix
184 lines
6.8 KiB
Nix
/* Generate JSON, XML and DocBook documentation for given NixOS options.
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Minimal example:
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{ pkgs, }:
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let
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eval = import (pkgs.path + "/nixos/lib/eval-config.nix") {
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baseModules = [
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../module.nix
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];
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modules = [];
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};
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in pkgs.nixosOptionsDoc {
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options = eval.options;
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}
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*/
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{ pkgs
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, lib
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, options
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, transformOptions ? lib.id # function for additional transformations of the options
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, documentType ? "appendix" # TODO deprecate "appendix" in favor of "none"
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# and/or rename function to moduleOptionDoc for clean slate
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# If you include more than one option list into a document, you need to
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# provide different ids.
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, variablelistId ? "configuration-variable-list"
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# String to prefix to the option XML/HTML id attributes.
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, optionIdPrefix ? "opt-"
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, revision ? "" # Specify revision for the options
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# a set of options the docs we are generating will be merged into, as if by recursiveUpdate.
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# used to split the options doc build into a static part (nixos/modules) and a dynamic part
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# (non-nixos modules imported via configuration.nix, other module sources).
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, baseOptionsJSON ? null
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# instead of printing warnings for eg options with missing descriptions (which may be lost
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# by nix build unless -L is given), emit errors instead and fail the build
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, warningsAreErrors ? true
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# allow docbook option docs if `true`. only markdown documentation is allowed when set to
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# `false`, and a different renderer may be used with different bugs and performance
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# characteristics but (hopefully) indistinguishable output.
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# deprecated since 23.11.
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# TODO remove in a while.
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, allowDocBook ? false
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# whether lib.mdDoc is required for descriptions to be read as markdown.
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# deprecated since 23.11.
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# TODO remove in a while.
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, markdownByDefault ? true
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}:
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assert markdownByDefault && ! allowDocBook;
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let
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rawOpts = lib.optionAttrSetToDocList options;
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transformedOpts = map transformOptions rawOpts;
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filteredOpts = lib.filter (opt: opt.visible && !opt.internal) transformedOpts;
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optionsList = lib.flip map filteredOpts
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(opt: opt
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// lib.optionalAttrs (opt ? relatedPackages && opt.relatedPackages != []) { relatedPackages = genRelatedPackages opt.relatedPackages opt.name; }
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);
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# Generate DocBook documentation for a list of packages. This is
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# what `relatedPackages` option of `mkOption` from
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# ../../../lib/options.nix influences.
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#
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# Each element of `relatedPackages` can be either
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# - a string: that will be interpreted as an attribute name from `pkgs` and turned into a link
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# to search.nixos.org,
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# - a list: that will be interpreted as an attribute path from `pkgs` and turned into a link
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# to search.nixos.org,
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# - an attrset: that can specify `name`, `path`, `comment`
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# (either of `name`, `path` is required, the rest are optional).
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#
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# NOTE: No checks against `pkgs` are made to ensure that the referenced package actually exists.
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# Such checks are not compatible with option docs caching.
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genRelatedPackages = packages: optName:
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let
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unpack = p: if lib.isString p then { name = p; }
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else if lib.isList p then { path = p; }
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else p;
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describe = args:
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let
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title = args.title or null;
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name = args.name or (lib.concatStringsSep "." args.path);
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in ''
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- [${lib.optionalString (title != null) "${title} aka "}`pkgs.${name}`](
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https://search.nixos.org/packages?show=${name}&sort=relevance&query=${name}
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)${
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lib.optionalString (args ? comment) "\n\n ${args.comment}"
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}
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'';
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in lib.concatMapStrings (p: describe (unpack p)) packages;
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optionsNix = builtins.listToAttrs (map (o: { name = o.name; value = removeAttrs o ["name" "visible" "internal"]; }) optionsList);
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in rec {
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inherit optionsNix;
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optionsAsciiDoc = pkgs.runCommand "options.adoc" {
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nativeBuildInputs = [ pkgs.nixos-render-docs ];
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} ''
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nixos-render-docs -j $NIX_BUILD_CORES options asciidoc \
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--manpage-urls ${pkgs.path + "/doc/manpage-urls.json"} \
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--revision ${lib.escapeShellArg revision} \
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${optionsJSON}/share/doc/nixos/options.json \
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$out
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'';
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optionsCommonMark = pkgs.runCommand "options.md" {
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nativeBuildInputs = [ pkgs.nixos-render-docs ];
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} ''
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nixos-render-docs -j $NIX_BUILD_CORES options commonmark \
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--manpage-urls ${pkgs.path + "/doc/manpage-urls.json"} \
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--revision ${lib.escapeShellArg revision} \
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${optionsJSON}/share/doc/nixos/options.json \
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$out
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'';
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optionsJSON = pkgs.runCommand "options.json"
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{ meta.description = "List of NixOS options in JSON format";
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nativeBuildInputs = [
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pkgs.brotli
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pkgs.python3Minimal
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];
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options = builtins.toFile "options.json"
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(builtins.unsafeDiscardStringContext (builtins.toJSON optionsNix));
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# merge with an empty set if baseOptionsJSON is null to run markdown
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# processing on the input options
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baseJSON =
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if baseOptionsJSON == null
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then builtins.toFile "base.json" "{}"
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else baseOptionsJSON;
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}
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''
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# Export list of options in different format.
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dst=$out/share/doc/nixos
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mkdir -p $dst
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TOUCH_IF_DB=$dst/.used-docbook \
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python ${./mergeJSON.py} \
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${lib.optionalString warningsAreErrors "--warnings-are-errors"} \
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${if allowDocBook then "--warn-on-docbook" else "--error-on-docbook"} \
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$baseJSON $options \
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> $dst/options.json
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if grep /nixpkgs/nixos/modules $dst/options.json; 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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brotli -9 < $dst/options.json > $dst/options.json.br
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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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echo "file json-br $dst/options.json.br" >> $out/nix-support/hydra-build-products
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'';
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optionsUsedDocbook = pkgs.runCommand "options-used-docbook" {} ''
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if [ -e ${optionsJSON}/share/doc/nixos/.used-docbook ]; then
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echo 1
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else
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echo 0
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fi >"$out"
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'';
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optionsDocBook = pkgs.runCommand "options-docbook.xml" {
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nativeBuildInputs = [
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pkgs.nixos-render-docs
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];
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} ''
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nixos-render-docs -j $NIX_BUILD_CORES options docbook \
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--manpage-urls ${pkgs.path + "/doc/manpage-urls.json"} \
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--revision ${lib.escapeShellArg revision} \
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--document-type ${lib.escapeShellArg documentType} \
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--varlist-id ${lib.escapeShellArg variablelistId} \
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--id-prefix ${lib.escapeShellArg optionIdPrefix} \
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${optionsJSON}/share/doc/nixos/options.json \
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"$out"
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'';
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}
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