anchor.diff:      ];
   
       postInstall = ''
  -      mv $out/lib/libx265.a $out/lib/libx265_main12.a
  +      # Remove unused files
  +      rm -rvf $out/includes
  +      rm -rvf $out/lib/pkgconfig
  +
  +      mv -v $out/lib/libx265.a $out/lib/libx265_main12.a
       '';
   
       enableParallelBuilding = true;
  
positive.code:     ];
  
      postInstall = ''
        mv $out/lib/libx265.a $out/lib/libx265_main10.a
      '';
  
      enableParallelBuilding = true;
  
negative.code: 
      nativeBuildInputs = [
        cmake
        ninja
        yasm
      ];
  
  