Remove yarn-closure code

src/index.ts

@@ -27,7 +27,6 @@ const generate = async (project: Project, cache: Cache, report: Report) => {
   const { configuration, cwd } = project;
   const yarnPathAbs = configuration.get(`yarnPath`);
   const cacheFolderAbs = configuration.get(`cacheFolder`);
-  const lockfileFilename = configuration.get(`lockfileFilename`);
 
   let yarnPath = ppath.relative(cwd, yarnPathAbs);
   if (yarnPath.startsWith(`../`)) {
@@ -47,48 +46,15 @@ const generate = async (project: Project, cache: Cache, report: Report) => {
     );
   }
 
-  // List files the derivation will depend on.
-  const yarnClosureInput = new Set([
-    `package.json`,
-    lockfileFilename,
-    yarnPath,
-  ]);
   for (const source of configuration.sources.values()) {
     if (!source.startsWith(`<`)) {
-      yarnClosureInput.add(source);
-    }
-  }
-  // TODO: Better way to find plugins? Re-parse rcfiles maybe?
-  const pluginsDir = ppath.join(cwd, `.yarn/plugins` as Filename);
-  if (xfs.existsSync(pluginsDir)) {
-    for (const filename of xfs.readdirSync(pluginsDir)) {
-      yarnClosureInput.add(ppath.join(pluginsDir, filename));
-    }
-  }
-
-  // Build Nix `filterSource` entries to match on.
-  const yarnClosureEntries = new Set();
-  for (const inputPath of yarnClosureInput) {
-    // Filter paths not reachable during the build and warn. (These are often
-    // just user global configuration files, but the warnings can help highlight
-    // dependencies on private registries.)
-    const relativePath = ppath.relative(cwd, inputPath);
-    if (relativePath.startsWith(`../`)) {
-      if (inputPath !== yarnPath) {
+      const relativeSource = ppath.relative(cwd, source);
+      if (relativeSource.startsWith(`../`)) {
         report.reportWarning(
           0,
-          `The path ${inputPath} is outside the project and was ignored - it may not be reachable in the Nix build`
+          `The config file ${source} is outside the project - it may not be reachable by the Nix build`
         );
       }
-      continue;
-    }
-    // Add the file itself.
-    yarnClosureEntries.add(`regular:${relativePath}`);
-    // Add directories leading up to the file.
-    let dir = ppath.dirname(relativePath);
-    while (dir !== `.`) {
-      yarnClosureEntries.add(`directory:${dir}`);
-      dir = ppath.dirname(dir);
     }
   }
 
@@ -118,6 +84,7 @@ const generate = async (project: Project, cache: Cache, report: Report) => {
   const projectName = ident ? structUtils.stringifyIdent(ident) : `workspace`;
   const projectExpr = projectExprTmpl
     .replace(`@@PROJECT_NAME@@`, JSON.stringify(projectName))
+    .replace(`@@YARN_PATH@@`, JSON.stringify(yarnPath))
     .replace(`@@CACHE_FOLDER@@`, JSON.stringify(cacheFolder))
     .replace(
       `@@CACHE_ENTRIES@@`,
@@ -126,15 +93,6 @@ const generate = async (project: Project, cache: Cache, report: Report) => {
           .map((entry) => `    { ${entry.join(` `)} }\n`)
           .join(``) +
         `  ]`
-    )
-    .replace(`@@YARN_PATH@@`, JSON.stringify(yarnPath))
-    .replace(
-      `@@YARN_CLOSURE_ENTRIES@@`,
-      `[\n` +
-        [...yarnClosureEntries]
-          .map((entry) => `    ${JSON.stringify(entry)}\n`)
-          .join(``) +
-        `  ]`
     );
   const projectExprPath = ppath.join(cwd, `yarn-project.nix` as Filename);
   xfs.writeFileSync(projectExprPath, projectExpr);

src/yarn-project.nix.in

@@ -9,10 +9,9 @@ let
 
   # Variables provided by the generator.
   project-name = @@PROJECT_NAME@@;
+  yarn-path = @@YARN_PATH@@;
   cache-folder = @@CACHE_FOLDER@@;
   cache-entries = @@CACHE_ENTRIES@@;
-  yarn-path = @@YARN_PATH@@;
-  yarn-closure-entries = @@YARN_CLOSURE_ENTRIES@@;
 
   # Defines the shell alias to run Yarn.
   yarn-alias = ''
@@ -21,16 +20,6 @@ let
     }
   '';
 
-  # Directory of just the files needed to run Yarn.
-  yarn-closure = cleanSourceWith {
-    inherit src;
-    filter = let
-      srcStr = toString src;
-      srcRel = removePrefix "${srcStr}/";
-    in path: type:
-      elem "${type}:${srcRel path}" yarn-closure-entries;
-  };
-
   # Fetch a single dependency.
   fetch = { filename, sha512, locator-hash }: stdenv.mkDerivation {
     name = replaceStrings [ "@" ] [ "-" ] filename;
@@ -46,7 +35,7 @@ let
       export yarn_cache_folder="$PWD"
 
       # Setup to environment so we can run Yarn.
-      pushd '${yarn-closure}' > /dev/null
+      pushd '${src}' > /dev/null
 
       export NIX_YARN_PATH="$(readlink -f '${yarn-path}')"
       ${yarn-alias}
@@ -128,6 +117,6 @@ in stdenv.mkDerivation {
   '';
 
   passthru = {
-    inherit yarn-closure offline-cache;
+    inherit offline-cache;
   };
 }