This directory contains patches that are applied to third-party code (dependencies) before the Bazel build runs. The files here are named such that the patch foo.patch will be applied to the repo @foo.

If you add a new patch to a Go dependency here, running dev generate bazel will add the patches to DEPS.bazel. For non-Go dependencies, you'll have to manually add the patches to the appropriate repo in WORKSPACE.

Generally speaking, the patches here "fix" BUILD files, which were either originally present in the repo, or which will be generated by Gazelle. A couple examples:

• com_github_cockroachdb_pebble.patch adds the file internal/invariants/off.go to the go_library for the invariants package -- otherwise, Gazelle omits it, causing builds to fail unless you pass the invariants build tag.
• com_github_gogo_protobuf.patch adds a rule, gogo_proto, so that we can import gogoproto/gogo.proto in our own .proto files, while not updating the existing gogoproto rule that uses the pre-generated .pb.go file.
• com_github_grpc_ecosystem_grpc_gateway.patch replaces some dependencies that Gazelle infers (those under @io_bazel_rules_go//proto/wkt) with the build targets using pre-generated .pb.go files under @com_github_golang_protobuf//ptypes. We do this because the wkt rules create conflicts in our build.