EACCESS Read-only Workspace Error on NixOS

Describe the bug On NixOS, all package files are stored in a read-only file-system. Something in vscode-js-debug at some point copies a file, from the nix store (which is read-only) into the user’s configuration. This works the first time. But since the permissions on the file are read-only, the next time this is attempted, the previous file cannot be overwritten.

Error activating auto attach: Error: EACCES: permission denied, copyfile ‘/nix/store/s81m8m4p355x54snv6fnc56pw75vlprs-vscode-1.58.0/lib/vscode/resources/app/extensions/ms-vscode.js-debug/src/bootloader.bundle.js’ -> ‘/home/ldlework/.config/Code/User/workspaceStorage/ed6365eb04d72d5abb85f7871ffb763d/ms-vscode.js-debug/bootloader.js’

This only happens when workspaces are being used.

Is there a change (here upstream) that could be made? I’ve discussed the issue https://github.com/NixOS/nixpkgs/issues/130590# but NixOS can’t really do anything about an application copying a file out of the store, like making it writable or whatnot.

To Reproduce Steps to reproduce the behavior:

1. Use NixOS or Nix
2. Install vscode
3. Use auto-attach
4. Start a node process while in a workspace
5. Stop debugging, and repeat 3.

VS Code Version: 1.58.2

[connor4312]

The next Insiders that’s compatible with the nightly should be out within 24h

[connor4312]

wrap everything in a try/catch and unlink/try again if it fails

Yep