message: build: patch protobuf to deal with too long CLI issues.
  Since merged, I've been unable to bazel build
  Upstream fix at
  Adding as a patch to avoid having to bump protobuf version when that
  merges just for this.
  Risk level: Low
  Testing: bazel build
diff: @@ -92,3 +92,59 @@ index efc3d8e7f..746ad4851 100644
  ################################################################################
  # Protobuf Runtime Library
  +
  +diff --git a/protobuf.bzl b/protobuf.bzl
  +index 5fa5543b1..484bc41a7 100644
  +--- a/protobuf.bzl
  ++++ b/protobuf.bzl
  +@@ -75,18 +75,17 @@ def _RelativeOutputPath(path, include, dest = ""):
  + def _proto_gen_impl(ctx):
  + """General implementation for generating protos"""
  + srcs = ctx.files.srcs
  +- deps = []
  +- deps += ctx.files.srcs
  ++ deps = depset(direct=ctx.files.srcs)
  + source_dir = _SourceDir(ctx)
  + gen_dir = _GenDir(ctx).rstrip("/")
  + if source_dir:
  +- import_flags = ["-I" + source_dir, "-I" + gen_dir]
  ++ import_flags = depset(direct=["-I" + source_dir, "-I" + gen_dir])
  + else:
  +- import_flags = ["-I."]
  ++ import_flags = depset(direct=["-I."])
  +
  + for dep in ctx.attr.deps:
  +- import_flags += dep.proto.import_flags
  +- deps += dep.proto.deps
  ++ import_flags = depset(transitive=[import_flags, dep.proto.import_flags])
  ++ deps = depset(transitive=[deps, dep.proto.deps])
  +
  + if not ctx.attr.gen_cc and not ctx.attr.gen_py and not ctx.executable.plugin:
  + return struct(
  +@@ -103,7 +102,7 @@ def _proto_gen_impl(ctx):
  + in_gen_dir = src.root.path == gen_dir
  + if in_gen_dir:
  + import_flags_real = []
  +- for f in depset(import_flags).to_list():
  ++ for f in import_flags.to_list():
  + path = f.replace("-I", "")
  + import_flags_real.append("-I$(realpath -s %s)" % path)
  +
  +@@ -118,7 +117,7 @@ def _proto_gen_impl(ctx):
  + outs.extend(_PyOuts([src.basename], use_grpc_plugin = use_grpc_plugin))
  +
  + outs = [ctx.actions.declare_file(out, sibling = src) for out in outs]
  +- inputs = [src] + deps
  ++ inputs = [src] + deps.to_list()
  + tools = [ctx.executable.protoc]
  + if ctx.executable.plugin:
  + plugin = ctx.executable.plugin
  +@@ -141,7 +140,7 @@ def _proto_gen_impl(ctx):
  + inputs = inputs,
  + tools = tools,
  + outputs = outs,
  +- arguments = args + import_flags + [src.path],
  ++ arguments = args + import_flags.to_list() + [src.path],
  + executable = ctx.executable.protoc,
  + mnemonic = "ProtoCompile",
  + use_default_shell_env = True,
  