{ config, pkgs, lib, ... }: {

  options.rust.enable = lib.mkEnableOption "Rust programming language.";

  config = lib.mkIf config.rust.enable {

    home-manager.users.${config.user} = {

      programs.fish.shellAbbrs = { ca = "cargo"; };

      home.packages = with pkgs; [ cargo rustc clippy gcc ];

    };

  };

}