anchor.diff: -{ lib, stdenv, fetchFromGitHub, autoconf, automake, libtool, pkg-config, glib, libdaemon
  -, mpd_clientlib, curl, sqlite, bundlerEnv, libnotify, pandoc }:
  +{ lib
  +, stdenv
  +, fetchFromGitHub
  +, autoconf
  +, automake
  +, libtool
  +, pkg-config
  +, glib
  +, libdaemon
  +, libmpdclient
  +, curl
  +, sqlite
  +, bundlerEnv
  +, libnotify
  +, pandoc
  +}:
   
   let
     gemEnv = bundlerEnv {
  
positive.code:     sha256 = "0vdksf6lcgmizqr5mqp0bbci259k0dj7gpmhx32md41jlmw5skaw";
    };
  
    meta = with lib; {
      description = "A cron like daemon for mpd";
      homepage    = "http://alip.github.io/mpdcron/";
      license     = licenses.gpl2;
      platforms   = platforms.unix;
      maintainers = with maintainers; [ lovek323 manveru ];
    };
  
    buildInputs =
      [ autoconf automake libtool pkg-config glib libdaemon pandoc
        mpd_clientlib curl sqlite gemEnv.wrappedRuby libnotify ];
  
    preConfigure = ''
      ./autogen.sh
    '';
  
    configureFlags = [ "--enable-gmodule" "--with-standard-modules=all" ];
  }
  
negative.code:     gemdir = ./.;
    };
  in stdenv.mkDerivation {
    pname = "mpdcron";
    version = "20161228";
  
    src = fetchFromGitHub {
      owner = "alip";
  