anchor.diff: -{ stdenv, fetchurl, which, automake113x, intltool, pkgconfig, libtool, makeWrapper,
  +{ stdenv, fetchgit, which, automake113x, intltool, pkgconfig, libtool, makeWrapper,
     dbus_glib, libcanberra, gst_all_1, upower, vala, gnome3_12, gtk3, gst_plugins_base,
     glib, gobjectIntrospection, hicolor_icon_theme
   }:
  
positive.code:     license = licenses.gpl3;
      platforms = platforms.linux;
    };
  }
negative.code: stdenv.mkDerivation rec {
    name = "gnome-shell-pomodoro-0.10.2-11-gd5f5b69";
  
    src = fetchgit {
        url = git://github.com/codito/gnome-shell-pomodoro.git;
        rev = "refs/tags/0.10.2";
        sha256 = "e58966abd859e35cbd7fd4b8816b521f4ec9ba5cd8e8c27d2067dd2ec4554b40";
    };
  
    configureScript = ''./autogen.sh'';
  