452 lines
14 KiB
Nix
452 lines
14 KiB
Nix
{ pkgs ? import <nixpkgs> {}
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, nodejs ? pkgs.nodejs
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, yarn ? pkgs.yarn
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, allowAliases ? pkgs.config.allowAliases
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}:
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let
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inherit (pkgs) stdenv lib fetchurl linkFarm callPackage git rsync makeWrapper runCommandLocal;
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compose = f: g: x: f (g x);
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id = x: x;
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composeAll = builtins.foldl' compose id;
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# https://docs.npmjs.com/files/package.json#license
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# TODO: support expression syntax (OR, AND, etc)
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getLicenseFromSpdxId = licstr:
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if licstr == "UNLICENSED" then
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lib.licenses.unfree
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else
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lib.getLicenseFromSpdxId licstr;
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in rec {
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# Export yarn again to make it easier to find out which yarn was used.
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inherit yarn;
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# Re-export pkgs
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inherit pkgs;
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unlessNull = item: alt:
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if item == null then alt else item;
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reformatPackageName = pname:
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let
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# regex adapted from `validate-npm-package-name`
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# will produce 3 parts e.g.
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# "@someorg/somepackage" -> [ "@someorg/" "someorg" "somepackage" ]
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# "somepackage" -> [ null null "somepackage" ]
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parts = builtins.tail (builtins.match "^(@([^/]+)/)?([^/]+)$" pname);
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# if there is no organisation we need to filter out null values.
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non-null = builtins.filter (x: x != null) parts;
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in builtins.concatStringsSep "-" non-null;
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inherit getLicenseFromSpdxId;
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# Generates the yarn.nix from the yarn.lock file
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mkYarnNix = { yarnLock, flags ? [] }:
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pkgs.runCommand "yarn.nix" {}
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"${yarn2nix}/bin/yarn2nix --lockfile ${yarnLock} --no-patch --builtin-fetchgit ${lib.escapeShellArgs flags} > $out";
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# Loads the generated offline cache. This will be used by yarn as
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# the package source.
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importOfflineCache = yarnNix:
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let
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pkg = callPackage yarnNix { };
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in
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pkg.offline_cache;
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defaultYarnFlags = [
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"--offline"
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"--frozen-lockfile"
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"--ignore-engines"
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];
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mkYarnModules = {
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name ? "${pname}-${version}", # safe name and version, e.g. testcompany-one-modules-1.0.0
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pname, # original name, e.g @testcompany/one
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version,
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packageJSON,
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yarnLock,
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yarnNix ? mkYarnNix { inherit yarnLock; },
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offlineCache ? importOfflineCache yarnNix,
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yarnFlags ? [ ],
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ignoreScripts ? true,
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pkgConfig ? {},
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preBuild ? "",
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postBuild ? "",
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workspaceDependencies ? [], # List of yarn packages
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packageResolutions ? {},
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}:
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let
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extraNativeBuildInputs =
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lib.concatMap
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(key: pkgConfig.${key}.nativeBuildInputs or [])
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(builtins.attrNames pkgConfig);
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extraBuildInputs =
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lib.concatMap
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(key: pkgConfig.${key}.buildInputs or [])
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(builtins.attrNames pkgConfig);
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postInstall = (builtins.map (key:
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if (pkgConfig.${key} ? postInstall) then
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''
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for f in $(find -L -path '*/node_modules/${key}' -type d); do
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(cd "$f" && (${pkgConfig.${key}.postInstall}))
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done
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''
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else
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""
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) (builtins.attrNames pkgConfig));
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workspaceJSON = pkgs.writeText
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"${name}-workspace-package.json"
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(builtins.toJSON { private = true; workspaces = ["deps/**"]; resolutions = packageResolutions; }); # scoped packages need second splat
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workspaceDependencyLinks = lib.concatMapStringsSep "\n"
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(dep: ''
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mkdir -p "deps/${dep.pname}"
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ln -sf ${dep.packageJSON} "deps/${dep.pname}/package.json"
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'')
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workspaceDependencies;
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in stdenv.mkDerivation {
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inherit preBuild postBuild name;
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dontUnpack = true;
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dontInstall = true;
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nativeBuildInputs = [ yarn nodejs git ] ++ extraNativeBuildInputs;
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buildInputs = extraBuildInputs;
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configurePhase = lib.optionalString (offlineCache ? outputHash) ''
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if ! cmp -s ${yarnLock} ${offlineCache}/yarn.lock; then
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echo "yarn.lock changed, you need to update the fetchYarnDeps hash"
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exit 1
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fi
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'' + ''
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# Yarn writes cache directories etc to $HOME.
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export HOME=$PWD/yarn_home
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'';
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buildPhase = ''
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runHook preBuild
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mkdir -p "deps/${pname}"
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cp ${packageJSON} "deps/${pname}/package.json"
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cp ${workspaceJSON} ./package.json
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cp ${yarnLock} ./yarn.lock
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chmod +w ./yarn.lock
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yarn config --offline set yarn-offline-mirror ${offlineCache}
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# Do not look up in the registry, but in the offline cache.
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${fixup_yarn_lock}/bin/fixup_yarn_lock yarn.lock
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${workspaceDependencyLinks}
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yarn install ${lib.escapeShellArgs (defaultYarnFlags ++ lib.optional ignoreScripts "--ignore-scripts" ++ yarnFlags)}
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${lib.concatStringsSep "\n" postInstall}
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mkdir $out
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mv node_modules $out/
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mv deps $out/
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patchShebangs $out
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runHook postBuild
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'';
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};
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# This can be used as a shellHook in mkYarnPackage. It brings the built node_modules into
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# the shell-hook environment.
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linkNodeModulesHook = ''
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if [[ -d node_modules || -L node_modules ]]; then
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echo "./node_modules is present. Replacing."
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rm -rf node_modules
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fi
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ln -s "$node_modules" node_modules
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'';
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mkYarnWorkspace = {
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src,
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packageJSON ? src + "/package.json",
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yarnLock ? src + "/yarn.lock",
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packageOverrides ? {},
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...
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}@attrs:
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let
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package = lib.importJSON packageJSON;
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packageGlobs = if lib.isList package.workspaces then package.workspaces else package.workspaces.packages;
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packageResolutions = package.resolutions or {};
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globElemToRegex = lib.replaceStrings ["*"] [".*"];
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# PathGlob -> [PathGlobElem]
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splitGlob = lib.splitString "/";
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# Path -> [PathGlobElem] -> [Path]
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# Note: Only directories are included, everything else is filtered out
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expandGlobList = base: globElems:
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let
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elemRegex = globElemToRegex (lib.head globElems);
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rest = lib.tail globElems;
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children = lib.attrNames (lib.filterAttrs (name: type: type == "directory") (builtins.readDir base));
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matchingChildren = lib.filter (child: builtins.match elemRegex child != null) children;
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in if globElems == []
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then [ base ]
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else lib.concatMap (child: expandGlobList (base+("/"+child)) rest) matchingChildren;
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# Path -> PathGlob -> [Path]
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expandGlob = base: glob: expandGlobList base (splitGlob glob);
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packagePaths = lib.concatMap (expandGlob src) packageGlobs;
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packages = lib.listToAttrs (map (src:
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let
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packageJSON = src + "/package.json";
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package = lib.importJSON packageJSON;
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allDependencies = lib.foldl (a: b: a // b) {} (map (field: lib.attrByPath [field] {} package) ["dependencies" "devDependencies"]);
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# { [name: String] : { pname : String, packageJSON : String, ... } } -> { [pname: String] : version } -> [{ pname : String, packageJSON : String, ... }]
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getWorkspaceDependencies = packages: allDependencies:
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let
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packageList = lib.attrValues packages;
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in
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composeAll [
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(lib.filter (x: x != null))
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(lib.mapAttrsToList (pname: _version: lib.findFirst (package: package.pname == pname) null packageList))
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] allDependencies;
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workspaceDependencies = getWorkspaceDependencies packages allDependencies;
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name = reformatPackageName package.name;
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in {
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inherit name;
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value = mkYarnPackage (
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builtins.removeAttrs attrs ["packageOverrides"]
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// { inherit src packageJSON yarnLock packageResolutions workspaceDependencies; }
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// lib.attrByPath [name] {} packageOverrides
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);
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})
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packagePaths
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);
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in packages;
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mkYarnPackage = {
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name ? null,
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src,
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packageJSON ? src + "/package.json",
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yarnLock ? src + "/yarn.lock",
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yarnNix ? mkYarnNix { inherit yarnLock; },
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offlineCache ? importOfflineCache yarnNix,
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yarnFlags ? [ ],
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yarnPreBuild ? "",
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yarnPostBuild ? "",
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pkgConfig ? {},
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extraBuildInputs ? [],
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publishBinsFor ? null,
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workspaceDependencies ? [], # List of yarnPackages
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packageResolutions ? {},
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...
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}@attrs:
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let
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package = lib.importJSON packageJSON;
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pname = package.name;
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safeName = reformatPackageName pname;
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version = attrs.version or package.version;
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baseName = unlessNull name "${safeName}-${version}";
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workspaceDependenciesTransitive = lib.unique (
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(lib.flatten (builtins.map (dep: dep.workspaceDependencies) workspaceDependencies))
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++ workspaceDependencies
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);
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deps = mkYarnModules {
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name = "${safeName}-modules-${version}";
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preBuild = yarnPreBuild;
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postBuild = yarnPostBuild;
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workspaceDependencies = workspaceDependenciesTransitive;
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inherit packageJSON pname version yarnLock offlineCache yarnFlags pkgConfig packageResolutions;
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};
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publishBinsFor_ = unlessNull publishBinsFor [pname];
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linkDirFunction = ''
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linkDirToDirLinks() {
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target=$1
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if [ ! -f "$target" ]; then
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mkdir -p "$target"
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elif [ -L "$target" ]; then
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local new=$(mktemp -d)
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trueSource=$(realpath "$target")
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if [ "$(ls $trueSource | wc -l)" -gt 0 ]; then
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ln -s $trueSource/* $new/
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fi
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rm -r "$target"
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mv "$new" "$target"
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fi
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}
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'';
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workspaceDependencyCopy = lib.concatMapStringsSep "\n"
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(dep: ''
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# ensure any existing scope directory is not a symlink
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linkDirToDirLinks "$(dirname node_modules/${dep.pname})"
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mkdir -p "deps/${dep.pname}"
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tar -xf "${dep}/tarballs/${dep.name}.tgz" --directory "deps/${dep.pname}" --strip-components=1
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if [ ! -e "deps/${dep.pname}/node_modules" ]; then
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ln -s "${deps}/deps/${dep.pname}/node_modules" "deps/${dep.pname}/node_modules"
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fi
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'')
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workspaceDependenciesTransitive;
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in stdenv.mkDerivation (builtins.removeAttrs attrs ["yarnNix" "pkgConfig" "workspaceDependencies" "packageResolutions"] // {
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inherit src version pname;
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name = baseName;
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buildInputs = [ yarn nodejs rsync ] ++ extraBuildInputs;
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node_modules = deps + "/node_modules";
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configurePhase = attrs.configurePhase or ''
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runHook preConfigure
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for localDir in npm-packages-offline-cache node_modules; do
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if [[ -d $localDir || -L $localDir ]]; then
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echo "$localDir dir present. Removing."
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rm -rf $localDir
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fi
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done
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# move convent of . to ./deps/${pname}
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mv $PWD $NIX_BUILD_TOP/temp
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mkdir -p "$PWD/deps/${pname}"
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rm -fd "$PWD/deps/${pname}"
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mv $NIX_BUILD_TOP/temp "$PWD/deps/${pname}"
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cd $PWD
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ln -s ${deps}/deps/${pname}/node_modules "deps/${pname}/node_modules"
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cp -r $node_modules node_modules
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chmod -R +w node_modules
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${linkDirFunction}
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linkDirToDirLinks "$(dirname node_modules/${pname})"
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ln -s "deps/${pname}" "node_modules/${pname}"
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${workspaceDependencyCopy}
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# Help yarn commands run in other phases find the package
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echo "--cwd deps/${pname}" > .yarnrc
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runHook postConfigure
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'';
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# Replace this phase on frontend packages where only the generated
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# files are an interesting output.
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installPhase = attrs.installPhase or ''
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runHook preInstall
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mkdir -p $out/{bin,libexec/${pname}}
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mv node_modules $out/libexec/${pname}/node_modules
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mv deps $out/libexec/${pname}/deps
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node ${./internal/fixup_bin.js} $out/bin $out/libexec/${pname}/node_modules ${lib.concatStringsSep " " publishBinsFor_}
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runHook postInstall
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'';
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doDist = attrs.doDist or true;
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distPhase = attrs.distPhase or ''
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# pack command ignores cwd option
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rm -f .yarnrc
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cd $out/libexec/${pname}/deps/${pname}
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mkdir -p $out/tarballs/
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yarn pack --offline --ignore-scripts --filename $out/tarballs/${baseName}.tgz
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'';
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passthru = {
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inherit pname package packageJSON deps;
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workspaceDependencies = workspaceDependenciesTransitive;
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} // (attrs.passthru or {});
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meta = {
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inherit (nodejs.meta) platforms;
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} // lib.optionalAttrs (package ? description) { inherit (package) description; }
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// lib.optionalAttrs (package ? homepage) { inherit (package) homepage; }
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// lib.optionalAttrs (package ? license) { license = getLicenseFromSpdxId package.license; }
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// (attrs.meta or {});
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});
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yarn2nix = mkYarnPackage {
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src =
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let
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src = ./.;
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mkFilter = { dirsToInclude, filesToInclude, root }: path: type:
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let
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inherit (pkgs.lib) any flip elem hasSuffix hasPrefix elemAt splitString;
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subpath = elemAt (splitString "${toString root}/" path) 1;
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spdir = elemAt (splitString "/" subpath) 0;
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in elem spdir dirsToInclude ||
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(type == "regular" && elem subpath filesToInclude);
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in builtins.filterSource
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(mkFilter {
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dirsToInclude = ["bin" "lib"];
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filesToInclude = ["package.json" "yarn.lock"];
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root = src;
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})
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src;
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# yarn2nix is the only package that requires the yarnNix option.
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# All the other projects can auto-generate that file.
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yarnNix = ./yarn.nix;
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# Using the filter above and importing package.json from the filtered
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# source results in an error in restricted mode. To circumvent this,
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# we import package.json from the unfiltered source
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packageJSON = ./package.json;
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yarnFlags = defaultYarnFlags ++ [ "--ignore-scripts" "--production=true" ];
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nativeBuildInputs = [ pkgs.makeWrapper ];
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buildPhase = ''
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source ${./nix/expectShFunctions.sh}
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expectFilePresent ./node_modules/.yarn-integrity
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# check dependencies are installed
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expectFilePresent ./node_modules/@yarnpkg/lockfile/package.json
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# check devDependencies are not installed
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expectFileOrDirAbsent ./node_modules/.bin/eslint
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expectFileOrDirAbsent ./node_modules/eslint/package.json
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'';
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postInstall = ''
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wrapProgram $out/bin/yarn2nix --prefix PATH : "${pkgs.nix-prefetch-git}/bin"
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'';
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};
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fixup_yarn_lock = runCommandLocal "fixup_yarn_lock"
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{
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buildInputs = [ nodejs ];
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} ''
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mkdir -p $out/lib
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mkdir -p $out/bin
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cp ${./lib/urlToName.js} $out/lib/urlToName.js
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cp ${./internal/fixup_yarn_lock.js} $out/bin/fixup_yarn_lock
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patchShebangs $out
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'';
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} // lib.optionalAttrs allowAliases {
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# Aliases
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spdxLicense = getLicenseFromSpdxId; # added 2021-12-01
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}
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