anchor.diff:    version = "1.5.1.81";
   
     buildInputs = [ which attr makeWrapper python ];
  +
  +  patches = [
  +    (fetchpatch {
  +      url = "https://github.com/xtreemfs/xtreemfs/commit/ebfdc2fff56c09f310159d92026883941e42a953.patch";
  +      sha256 = "075w00ad88qm6xpm5679m0gfzkrc53w17sk7ycybf4hzxjs29ygy";
  +      name = "xtreemfs-fix-for-openssl_1_1";
  +    })
  +  ];
   
     preConfigure = ''
       export JAVA_HOME=${jdk}
  
positive.code:     maintainers = with lib.maintainers; [ raskin matejc ];
      platforms = lib.platforms.linux;
      license = lib.licenses.bsd3;
      broken = true;  # does not support openssl 1.1
    };
  }
  
negative.code: { stdenv, boost, fuse, openssl, cmake, attr, jdk, ant, which, file, python
  , lib, valgrind, makeWrapper, fetchFromGitHub, fetchpatch }:
  
  stdenv.mkDerivation {
    src = fetchFromGitHub {
  