librewolf: nixpkgs.config.librewolf.enablePlasmaBrowserIntegration does not work

[huantianad]

Describe the bug

Setting nixpkgs.config.librewolf.enablePlasmaBrowserIntegration = true; in my NixOS config does not install the native messaging host in the librewolf files.

Steps To Reproduce

Steps to reproduce the behavior:

1. Set nixpkgs.config.librewolf.enablePlasmaBrowserIntegration = true; and add librewolf to environment.systemPackages.
2. Run librewolf and install the Plasma Browser Integration extension.
3. The extension fails to connect to the native host.

Expected behavior

A clear and concise description of what you expected to happen.

Additional context

Using (librewolf.override { cfg.enablePlasmaBrowserIntegration = true; }) works properly.

Notify maintainers

@squalus

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.3.2, NixOS, 23.05 (Stoat), 23.05.20230514.0470f36`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.13.3`
 - channels(root): `""`
 - channels(huantian): `""`
 - nixpkgs: `/etc/nixpkgs/channels/nixpkgs`

[huantianad]

My mistake, I had nixpkgs.pkgs set which disables nixpkgs.config.