anchor.diff:      homepage = "https://github.com/castano/nvidia-texture-tools";
       license = licenses.mit;
       platforms = platforms.unix;
  -    broken = stdenv.isAarch64;
  +    maintainers = with maintainers; [ wegank ];
     };
   }
  
positive.code:     # Make a recently added pure virtual function just virtual,
      # to keep compatibility.
      sed -i 's/virtual void endImage() = 0;/virtual void endImage() {}/' src/nvtt/nvtt.h
    '';
  
    cmakeFlags = [
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "nvidia-texture-tools";
    version = "unstable-2020-12-21";
  
    src = fetchFromGitHub {
      owner = "castano";
      repo = "nvidia-texture-tools";
      rev = "aeddd65f81d36d8cb7b169b469ef25156666077e";
      sha256 = "sha256-BYNm8CxPQbfmnnzNmOQ2Dc8HSyO8mkqzYsBZ5T80398=";
    };
  
    nativeBuildInputs = [ cmake ];
  
  