let version = "1.9.0"; in final: prev: { retroarchBare = prev.retroarchBare.overrideAttrs (o: { inherit version; src = prev.fetchFromGitHub { owner = "libretro"; repo = "RetroArch"; hash = "sha256-dzPOuT+v1JtYzvAtqZ/eVWQSYQLAWX3TyS3jXdBmDdg="; rev = "v${version}"; }; }); }