bug: vscode extensions only install when not under profiles.default

[5wiley]

Are you following the right branch?

• My Nixpkgs and Home Manager versions are in sync

Is there an existing issue for this?

• I have searched the existing issues

Issue description

I was having issues with vscode packages being changed or reset on rebuild due to symlinking issues. These issues refer to that bug
7719
3507
4394
The fix ended up being programs.vscode.mutableExtensionsDir = false;. However, the extensions are only installed when defined under programs.vscode.extensions, instead of programs.vscode.profiles.default.extensions, causing this warning upon building.

trace: warning: tomcotton profile: The option `programs.vscode.extensions' defined in `/nix/store/gg0lmpkbg63kgsd95h7sh1j5psp39a1a-source/home/tomcotton.nix' has been renamed to `programs.vscode.profiles.default.extensions'.

The extensions end up working, but the error message is worrying.

My working config

programs.vscode = {
    enable = true;
    mutableExtensionsDir = false;
    extensions = with pkgs.vscode-extensions; [ 
      asvetliakov.vscode-neovim
      ms-vscode.cpptools
      bbenoist.nix
      ms-vscode.cpptools-extension-pack
      xaver.clang-format
      twxs.cmake
      ms-vscode.cmake-tools
      james-yu.latex-workshop
      ms-dotnettools.csharp
      ms-dotnettools.csdevkit
      saoudrizwan.claude-dev
      ms-dotnettools.vscode-dotnet-runtime 
      mechatroner.rainbow-csv
      ms-python.vscode-pylance
      ms-python.python
      ms-python.debugpy
      antyos.openscad
      ms-vscode.makefile-tools
      valentjn.vscode-ltex
      vadimcn.vscode-lldb
      ] ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace [
      {
        name = "chuck";
        publisher = "forrcaho";
        version = "1.0.1";
        sha256 = "sha256-gqcN7eam0YnBNQ2z7tA7Fo7PbXnJV0lX9TqcEbnMDL8=";
      }
    ];
  profiles.default = {
      userSettings = {
          # This property will be used to generate settings.json:
          # https://code.visualstudio.com/docs/getstarted/settings#_settingsjson
          "editor.formatOnSave" = true;
      keybindings = [
          # See https://code.visualstudio.com/docs/getstarted/keybindings#_advanced-customization
          {
              key = "shift+cmd+j";
              command = "workbench.action.focusActiveEditorGroup";
              when = "terminalFocus";
          }
      ];
      };
    };
  };

Maintainer CC

I can't find the maintainer, sorry. The issues I cited above also have no response here :/

System information

- system: `"aarch64-darwin"`
 - host os: `Darwin 24.6.0, macOS 15.6.1`
 - multi-user?: `yes`
 - sandbox: `no`
 - version: `nix-env (Nix) 2.25.3`
 - nixpkgs: `/nix/store/1l18ynbd52x2xq8asyqbdhdngwvhvich-source`

[stale]

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[vladmiller]

I am experiencing the similar issue, except when I add extensions to the default profile, they sometimes disappear. For example, if I'd apply the following config where extensions are added to the default profile, I'd only see auto-rename-tag in the list of extensions, where as mutableExtensionsDir = false; and older extensions works but gives a warning.

Here is my nix config for VSCode (some fields omitted for brevity).

{
  pkgs,
  vars,
  ...
}: {
  home-manager.users.${vars.user} = {pkgs, ...}: {
    programs.vscode = {
      enable = true;

      mutableExtensionsDir = false;

      extensions = with pkgs; [
        vscode-extensions.bbenoist.nix
        vscode-extensions.golang.go
        vscode-extensions.biomejs.biome
        vscode-extensions.bradlc.vscode-tailwindcss
        vscode-extensions.formulahendry.auto-rename-tag
      ];

      # Default user settings
      profiles.default.userSettings = {
        # Color theme
        "workbench.colorTheme" = "Default Dark+";

        # Autosave files
        "files.autoSave" = "afterDelay";
        "files.autoSaveDelay" = 1000;

       # ...

      };
    };
  };
}