anchor.diff: -{ stdenv, fetchhg, pkgconfig, libixp_hg, txt2tags, dash, python
  +{ stdenv, fetchhg, pkgconfig, libixp_hg, txt2tags, dash, python, which
   , libX11 , libXrender, libXext, libXinerama, libXrandr, libXft }:
   
   stdenv.mkDerivation rec {
  
positive.code:     EOF
    '';
  
    buildInputs = [ pkgconfig libixp_hg txt2tags dash python
                    libX11 libXrender libXext libXinerama libXrandr libXft ];
  
    # For some reason including mercurial in buildInputs did not help
  
negative.code:   # for dlopen-ing
    patchPhase = ''
      substituteInPlace lib/libstuff/x11/xft.c --replace "libXft.so" "${libXft}/lib/libXft.so"
      substituteInPlace cmd/wmii.sh.sh --replace "\$(which which)" "${which}/bin/which"
    '';
  
    configurePhase = ''
  