anchor.diff:  
       # Miscellaneous
       # FIXME: calibre
  -    cowsay
  -    exercism
  +    # cowsay
  +    # exercism
       # FIXME: kindlegen
       skim
   
  
positive.code:     html-tidy
      jid
      jq
      oniguruma
      # TODO: nginx # NOTE: will need to configure daemon too
      # ngrok # TODO: 2.x
      # TODO: prometheus
      wget
  
      # Maths
      gap4r8p8
  
negative.code:     # VoiceHive
      # apacheHttpd
      php56
      # mysql55
      netbeans
    ]) ++ (with pkgs.php56Packages; [
      composer
      xdebug
    ]) ++ (with pkgs.beam.packages.erlangR19; [
      # elixir
      # hex2nix
      # lfe
      # rebar3-open
    # ]) ++ (with pkgs.elmPackages; [
    #   elm
    ]) ++ (with pkgs.haskellPackages; [
  