anchor.diff: -{ stdenv, fetchFromGitHub, cmake, pkgconfig }:
  +{ stdenv, fetchFromGitHub, fetchpatch, cmake, pkgconfig }:
   
   stdenv.mkDerivation {
     pname = "raspberrypi-tools";
  
positive.code: 
    nativeBuildInputs = [ cmake pkgconfig ];
  
    preConfigure = ''
      cmakeFlagsArray+=("-DVMCS_INSTALL_PREFIX=$out")
    '' + stdenv.lib.optionalString stdenv.isAarch64 ''
  
negative.code:     description = "Userland tools for the Raspberry Pi board";
      homepage = "https://github.com/raspberrypi/userland";
      license = licenses.bsd3;
      platforms = [ "x86_64-linux" "armv6l-linux" "armv7l-linux" "aarch64-linux" ];
      maintainers = with maintainers; [ dezgeg tavyc ];
    };
  }
  