anchor.diff:      license = licenses.gpl3Only;
       homepage = "https://github.com/grimme-lab/crest";
       platforms = platforms.linux;
  +    maintainers = [ maintainers.sheepforce ];
     };
   }
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "crest";
    version = "2021-04-24";
  
    nativeBuildInputs = [
      cmake
  
negative.code:   src = fetchFromGitHub {
      owner = "grimme-lab";
      repo = pname;
      rev = "v${version}";
      sha256 = "/6f5MH+0AHXrVC26KA3fXTrJYuNSfeW3H79dJPMjuRw=";
    };
  
    FFLAGS = "-ffree-line-length-512";
  