{ pkgs, ... }: (pkgs.originals.grpc.override { abseil-cpp = pkgs.abseil_cpp; protobuf = pkgs.protobuf; stdenv = pkgs.llvmPackages.libcxxStdenv; }).overrideAttrs(orig: rec { version = "1.30.0"; src = pkgs.fetchFromGitHub { owner = "grpc"; repo = "grpc"; rev = "v${version}"; sha256 = "01w5jdp318i7ncxbkfv75q0mf0rd3qwfr1ycdd3850nv6mprv7n0"; fetchSubmodules = true; }; cmakeFlags = orig.cmakeFlags ++ [ "-DCMAKE_CXX_STANDARD=17" "-DCMAKE_CXX_STANDARD_REQUIRED=ON" ]; })