Pinetab-v: rope in config

machines/ptv/pkgs-cross/protobuf/default.nix

@@ -0,0 +1,11 @@
+final: prev: prev.protobuf.overrideAttrs (old: {
+  # https://github.com/advancedtelematic/aktualizr/issues/1427
+  # atomics not supported, need either submit PR like suggested bove
+  # or, for now, use libatomic_ops
+  postPatch = old.postPatch + ''
+    sed -i -e 's/set(protobuf_LINK_LIBATOMIC false)/set(protobuf_LINK_LIBATOMIC true)/' CMakeLists.txt
+  '';
+  buildInputs = [
+    prev.libatomic_ops
+  ] ++ old.buildInputs;
+})