anchor.diff:    home.keyboard.options = [ "shift:both_capslock" "caps:backspace" ];
     home.keyboard.variant = "colemak";
   
  +  nixpkgs.config.allowUnfree = true;
     home.packages = with pkgs; [
       xfce.xfce4-terminal  # terminal emulator
       trashy  # trash management, replacing "rm"
  
positive.code:     BROWSER = "/usr/bin/firefox";
      TERM = "xterm-256color";
  
      NIX_ALLOW_UNFREE = 1;
      NIX_PATH = "$HOME/.nix-defexpr/channels:/nix/var/nix/profiles/per-user/root/channels$\{NIX_PATH:+:$NIX_PATH\}";
  
      RUST_BACKTRACE = 1;
  
      MATLAB_LOG_DIR = "/home/perlinm/Workspace/MATLAB/logs";
  
negative.code:     vim
      emacs
  
      # languages
      gcc
      cargo
      python3
  