anchor.diff:  , libpthreadstubs
   , libsndfile
   , libtiff
  -, giflib
   , libxcb
   , mkfontdir
   , pcre
   , perl
  +, pkg-config
   }:
   
   stdenv.mkDerivation rec {
     pname = "icewm";
  -  version = "2.3.4";
  +  version = "2.6.0";
   
     src = fetchFromGitHub {
       owner  = "ice-wm";
       repo = pname;
       rev = version;
  -    hash = "sha256-UyLefj0eY/m3Of51NdhMNMq3z+kaLK28zDe63hbDK5A=";
  +    hash = "sha256-R06tiWS9z6K5Nbi+vvk7DyozpcFdrHleMeh7Iq/FfHQ=";
     };
   
     nativeBuildInputs = [
  
positive.code:     libpthreadstubs
      libsndfile
      libtiff
      giflib
      libxcb
      mkfontdir
      pcre
    ];
  
    cmakeFlags = [ "-DPREFIX=$out" "-DCFGDIR=/etc/icewm" ];
  
    # install legacy themes
    postInstall = ''
  
negative.code: , gdk-pixbuf
  , gdk-pixbuf-xlib
  , gettext
  , giflib
  , glib
  , imlib2
  , libICE
  