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);