cudnn: throw error if the default version is not supported

    # Add all supported builds as attributes

    allBuilds = mapAttrs' (version: file: nameValuePair (computeName version) (buildCuDnnPackage (removeAttrs file ["fileVersion"]))) supportedVersions;

    # Set the default attributes, e.g. cudnn = cudnn_8_3_1;

    defaultBuild = { "cudnn" = allBuilds.${computeName cuDnnDefaultVersion}; };

    defaultBuild = { "cudnn" = if allBuilds ? ${computeName cuDnnDefaultVersion}

      then allBuilds.${computeName cuDnnDefaultVersion}

      else throw "cudnn-${cuDnnDefaultVersion} does not support your cuda version ${cudaVersion}"; };

  in allBuilds // defaultBuild;

  cuDnnVersions = let