anchor.diff:  { fetchgit, stdenv, autoconf, automake, pkgconfig, m4, curl,
  -mesa, libXmu, libXi, freeglut, libjpeg, libtool, wxGTK,
  -sqlite, gtk, patchelf, libXScrnSaver, libnotify, libX11 }:
  +mesa, libXmu, libXi, freeglut, libjpeg, libtool, wxGTK, xcbutil,
  +sqlite, gtk, patchelf, libXScrnSaver, libnotify, libX11, libxcb }:
   
   stdenv.mkDerivation rec {
     name = "boinc-7.0.44";
  
positive.code: 
    enableParallelBuilding = true;
  
    configureFlags = "--disable-server --disable-fast-install";
  
    postInstall = "
      # Remove a leading rpath to /tmp/... I don't know how it got there
      # I could not manage to get rid of that through autotools.
      for a in $out/bin/*; do
        RPATH=$(patchelf --print-rpath $a)
        NEWRPATH=$(echo $RPATH | sed 's/^[^:]*://')
        patchelf --set-rpath $out/lib:$NEWRPATH $a
      done
    ";
  
    meta = {
      description = "Free software for distributed and grid computing";
  
negative.code:   };
  
    buildInputs = [ libtool automake autoconf m4 pkgconfig curl mesa libXmu libXi
      freeglut libjpeg wxGTK sqlite gtk libXScrnSaver libnotify patchelf libX11 
      libxcb xcbutil
    ];
  
    postConfigure = ''
      sed -i -e s,/etc,$out/etc, client/scripts/Makefile
  