uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/tools/protoc-gen-grpc-web/default.nix

@@ -0,0 +1,55 @@
+{ lib, stdenv, fetchFromGitHub, protobuf }:
+
+stdenv.mkDerivation rec {
+  pname = "protoc-gen-grpc-web";
+  version = "1.3.1";
+
+  src = fetchFromGitHub {
+    owner = "grpc";
+    repo = "grpc-web";
+    rev = version;
+    sha256 = "sha256-NRShN4X9JmCjqPVY/q9oSxSOvv1bP//vM9iOZ6ap5vc=";
+  };
+
+  sourceRoot = "source/javascript/net/grpc/web/generator";
+
+  strictDeps = true;
+  nativeBuildInputs = [ protobuf ];
+  buildInputs = [ protobuf ];
+
+  makeFlags = [ "PREFIX=$(out)" "STATIC=no" ];
+
+  patches = [
+    # https://github.com/grpc/grpc-web/pull/1210
+    ./optional-static.patch
+  ];
+
+  doCheck = true;
+  checkInputs = [ protobuf ];
+  checkPhase = ''
+    runHook preCheck
+
+    CHECK_TMPDIR="$TMPDIR/proto"
+    mkdir -p "$CHECK_TMPDIR"
+
+    protoc \
+      --proto_path="${src}/packages/grpc-web/test/protos" \
+      --plugin="./protoc-gen-grpc-web" \
+      --grpc-web_out="import_style=commonjs,mode=grpcwebtext:$CHECK_TMPDIR" \
+      echo.proto
+
+    # check for grpc-web generated file
+    [ -f "$CHECK_TMPDIR/echo_grpc_web_pb.js" ]
+
+    runHook postCheck
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/grpc/grpc-web";
+    changelog = "https://github.com/grpc/grpc-web/blob/${version}/CHANGELOG.md";
+    description = "gRPC web support for Google's protocol buffers";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ jk ];
+    platforms = platforms.unix;
+  };
+}