Unpatch yarn on postinstall

2 files changed, 25 insertions, 0 deletions

diff --git a/gui/package.json b/gui/package.json
index eccc37a3ea..c6eed545c5 100644
--- a/gui/package.json
+++ b/gui/package.json
@@ -4,6 +4,7 @@
     "packages/*"
   ],
   "scripts": {
+    "postinstall": "node unpatch-yarn.js",
     "flow": "flow",
     "lint": "eslint \"packages/**/*.js\"",
     "format": "yarn run private:format --write",
diff --git a/gui/unpatch-yarn.js b/gui/unpatch-yarn.js
new file mode 100644
index 0000000000..0bf85629ac
--- /dev/null
+++ b/gui/unpatch-yarn.js
@@ -0,0 +1,24 @@
+// This is a companion script that reverts the effect of preinstall script in 
+// `\gui\packages\yarn-fixes`.
+//
+// The symlink to `\gui\node_modules\node_modules` that fixes the bug, described in 
+// https://github.com/yarnpkg/yarn/issues/4564, must be removed after node modules installation, 
+// because circular symlinks cause scripts like electron-builder to crash.
+
+const path = require('path');
+const fs = require('fs');
+
+if (process.platform !== 'win32') {
+  return;
+}
+
+const symlinkPath = path.join(__dirname, 'node_modules/node_modules');
+
+try {
+  console.log('Removing a symlink to node_modules/node_modules');
+  fs.unlinkSync(symlinkPath);
+} catch (error) {
+  if (error.code !== 'ENOENT') {
+    throw error;
+  }
+}