anchor.diff:    src = fetchgit {
       inherit rev;
       url = https://github.com/wolf9466/cpuminer-multi.git;
  -    sha256 = "1lzaiwy2wk9awpzpfnp3d6dymnb4bvgw1vg2433plfqhi9jfdrqj";
  +    sha256 = "11dg4rra4dgfb9x6q85irn0hrkx2lkwyrdpgdh10pag09s3vhy4v";
     };
   
     buildInputs = [ autoconf automake curl jansson ];
  
positive.code:     homepage = https://github.com/wolf9466/cpuminer-multi;
      license = licenses.gpl2;
      maintainers = [ maintainers.ehmry ];
    };
  }
negative.code: , aesni ? true }:
  
  let
    rev = "8393e03089c0abde61bd5d72aba8f926c3d6eca4";
    date = "20160316";
  in
  stdenv.mkDerivation rec {
    name = "cpuminer-multi-${date}-${stdenv.lib.strings.substring 0 7 rev}";
  