feat: enhance packageAfterCopy hook to remove non-target prebuilt binaries

forge.config.ts

@@ -35,7 +35,7 @@ const config: ForgeConfig = {
   },
   rebuildConfig: {},
   hooks: {
-    packageAfterCopy: async (_forgeConfig, buildPath) => {
+    packageAfterCopy: async (_forgeConfig, buildPath, _electronVersion, platform, arch) => {
       // The VitePlugin's ignore filter only copies .vite/ into the build.
       // Externalized packages need to be installed into node_modules here.
       // At this point, only .vite/ exists. The VitePlugin writes package.json
@@ -68,6 +68,37 @@ const config: ForgeConfig = {
         stdio: 'inherit',
         env: { ...process.env, npm_config_nodedir: '' },
       });
+
+      // Remove cross-platform prebuilt binaries that don't match the target.
+      // Packages like @github/copilot ship prebuilds for all platforms;
+      // keeping foreign-arch .node files breaks rpmbuild's strip step.
+      const targetDir = `${platform}-${arch}`;
+      const nmPath = path.join(buildPath, 'node_modules');
+      const findPrebuilds = (dir: string): string[] => {
+        const results: string[] = [];
+        if (!fs.existsSync(dir)) return results;
+        for (const entry of fs.readdirSync(dir, { withFileTypes: true })) {
+          const full = path.join(dir, entry.name);
+          if (entry.isDirectory()) {
+            if (entry.name === 'prebuilds') {
+              results.push(full);
+            } else {
+              results.push(...findPrebuilds(full));
+            }
+          }
+        }
+        return results;
+      };
+
+      for (const prebuildsDir of findPrebuilds(nmPath)) {
+        for (const entry of fs.readdirSync(prebuildsDir)) {
+          if (entry !== targetDir) {
+            const fullPath = path.join(prebuildsDir, entry);
+            fs.rmSync(fullPath, { recursive: true, force: true });
+            console.log(`[forge] Removed non-target prebuild: ${entry}`);
+          }
+        }
+      }
     },
   },
   makers: [