anchor.diff:      leiningen
       openjdk8
   
  +    # Libraries
  +    # TODO: openssl
  +
       # Lisp
       sbcl
  +
  +    # Miscellaneous
  +    # FIXME: exercism
  +    # FIXME: kindlegen
   
       # Nix
       nixops
  
positive.code: 
    nixpkgs.config.packageOverrides = pkgs: {
      erlang = pkgs.erlangR19;
    };
  }
  
negative.code:     silver-searcher
      tree
  
      # Virtualization
      # FIXME: xhyve
  
      # Web/JSON
      curl
      httpie
      jid
      jq
      # TODO: nginx # NOTE: will need to confugure daemon too
      # TODO: prometheus
      wget
  
    ]) ++ (with pkgs.haskellPackages; [
  