anchor.diff:      # FIXME: timidity
   
       # BEAM
  -    elixir
  +    # FIXME: elixir
       erlangR19
  -    hex2nix
  +    # FIXME: hex2nix # NOTE: elixir issue
       lfe
       rebar3-open
   
  
positive.code:     mono
  
      # Nix
      nixops
      nix-repl
  
      # OCaml
  
negative.code: 
    # programs.nix-script.enable = true;
  
    programs.emacs.enable = false;
  
    programs.emacs.packages = (self: with {
      elpa = self.elpaPackages;
  