Support modifying .yarnrc if has hidden attr

CHANGELOG.md

@@ -1,7 +1,13 @@
 # Changelog
+
 <!-- -->
+
 Please add one entry in this file for each change in Yarn's behavior. Use the same format for all entries, including the third-person verb. Make sure you don't add more than one line of text to keep it clean. Thanks!
 
+## 1.22.12
+
+- Support modifying .yarnrc if has hidden attr: https://github.com/yarnpkg/yarn/issues/4306
+
 ## 1.22.11
 
 This version fixes a problem where Yarn wasn't forwarding SIGTERM to the binary spawned via `yarnPath`. It also makes `yarn init -2` compatible with [Corepack](https://github.com/nodejs/corepack). The behaviour of `yarn init` (without `-2`) doesn't change.
@@ -69,15 +75,15 @@ Those versions didn't contain any changes and were just triggered by our infra w
 - Allows some dots in binary names again
 
   [#7811](https://github.com/yarnpkg/yarn/pull/7811) - [**Valery Bugakov**](https://github.com/valerybugakov)
-  
+
 - Better error handling on `yarn set version`
 
   [#7848](https://github.com/yarnpkg/yarn/pull/7848) - [**Nick Olinger**](https://github.com/olingern)
 
 - Passes arguments following `--` when running a workspace script (`yarn workspace pkg run command -- arg`)
 
   [#7776](https://github.com/yarnpkg/yarn/pull/7776) - [**Jeff Valore**](https://twitter.com/rally25rs)
-  
+
 - Fixes an issue where the archive paths were incorrectly sanitized
 
   [#7831](https://github.com/yarnpkg/yarn/pull/7831) - [**Maël Nison**](https://twitter.com/arcanis)
@@ -99,7 +105,7 @@ Those versions didn't contain any changes and were just triggered by our infra w
 - Implements `yarn init --install <version>`
 
   [#7723](https://github.com/yarnpkg/yarn/pull/7723) - [**Maël Nison**](https://twitter.com/arcanis)
-  
+
 ## 1.19.2
 
 - Folders like `.cache` won't be pruned from the `node_modules` after each install.

package.json

@@ -1,7 +1,7 @@
 {
   "name": "yarn",
   "installationMethod": "unknown",
-  "version": "1.23.0-0",
+  "version": "1.23.1-0",
   "license": "BSD-2-Clause",
   "preferGlobal": true,
   "description": "📦🐈 Fast, reliable, and secure dependency management.",

src/util/fs.js

@@ -27,7 +27,10 @@ export const constants =
 export const lockQueue = new BlockingQueue('fs lock');
 
 export const readFileBuffer = promisify(fs.readFile);
-export const open: (path: string, flags: string, mode?: number) => Promise<Array<string>> = promisify(fs.open);
+export const open: (path: string, flags: string, mode?: number) => Promise<number> = promisify(fs.open);
+export const close: (fd: number) => Promise<void> = promisify(fs.close);
+export const ftruncate: (fd: number) => Promise<void> = promisify(fs.ftruncate);
+export const write: (fd: number, data: string | Buffer) => Promise<void> = promisify(fs.write);
 export const writeFile: (path: string, data: string | Buffer, options?: Object) => Promise<void> = promisify(
   fs.writeFile,
 );
@@ -786,7 +789,16 @@ export async function writeFilePreservingEol(path: string, data: string): Promis
   if (eol !== '\n') {
     data = data.replace(/\n/g, eol);
   }
-  await writeFile(path, data);
+
+  if (os.platform() === 'win32' && await exists(path)) {
+    // Support modifying the file if has hidden attr
+    const fd = await open(path, "r+");
+    await ftruncate(fd);
+    await write(fd, data);
+    await close(fd);
+  } else {
+    await writeFile(path, data);
+  }
 }
 
 export async function hardlinksWork(dir: string): Promise<boolean> {