Reformat protobuf.bzl
(to minimize the diff in the next change)
diff --git a/third_party/protobuf/3.6.1/protobuf.bzl b/third_party/protobuf/3.6.1/protobuf.bzl
index d6f042c..3a0decd 100644
--- a/third_party/protobuf/3.6.1/protobuf.bzl
+++ b/third_party/protobuf/3.6.1/protobuf.bzl
@@ -1,127 +1,129 @@
def _GetPath(ctx, path):
- if ctx.label.workspace_root:
- return ctx.label.workspace_root + '/' + path
- else:
- return path
+ if ctx.label.workspace_root:
+ return ctx.label.workspace_root + "/" + path
+ else:
+ return path
def _IsNewExternal(ctx):
- # Bazel 0.4.4 and older have genfiles paths that look like:
- # bazel-out/local-fastbuild/genfiles/external/repo/foo
- # After the exec root rearrangement, they look like:
- # ../repo/bazel-out/local-fastbuild/genfiles/foo
- return ctx.label.workspace_root.startswith("../")
+ # Bazel 0.4.4 and older have genfiles paths that look like:
+ # bazel-out/local-fastbuild/genfiles/external/repo/foo
+ # After the exec root rearrangement, they look like:
+ # ../repo/bazel-out/local-fastbuild/genfiles/foo
+ return ctx.label.workspace_root.startswith("../")
def _GenDir(ctx):
- if _IsNewExternal(ctx):
- # We are using the fact that Bazel 0.4.4+ provides repository-relative paths
- # for ctx.genfiles_dir.
- return ctx.genfiles_dir.path + (
- "/" + ctx.attr.includes[0] if ctx.attr.includes and ctx.attr.includes[0] else "")
- # This means that we're either in the old version OR the new version in the local repo.
- # Either way, appending the source path to the genfiles dir works.
- return ctx.var["GENDIR"] + "/" + _SourceDir(ctx)
+ if _IsNewExternal(ctx):
+ # We are using the fact that Bazel 0.4.4+ provides repository-relative paths
+ # for ctx.genfiles_dir.
+ return ctx.genfiles_dir.path + (
+ "/" + ctx.attr.includes[0] if ctx.attr.includes and ctx.attr.includes[0] else ""
+ )
+
+ # This means that we're either in the old version OR the new version in the local repo.
+ # Either way, appending the source path to the genfiles dir works.
+ return ctx.var["GENDIR"] + "/" + _SourceDir(ctx)
def _SourceDir(ctx):
- if not ctx.attr.includes:
- return ctx.label.workspace_root
- if not ctx.attr.includes[0]:
- return _GetPath(ctx, ctx.label.package)
- if not ctx.label.package:
- return _GetPath(ctx, ctx.attr.includes[0])
- return _GetPath(ctx, ctx.label.package + '/' + ctx.attr.includes[0])
+ if not ctx.attr.includes:
+ return ctx.label.workspace_root
+ if not ctx.attr.includes[0]:
+ return _GetPath(ctx, ctx.label.package)
+ if not ctx.label.package:
+ return _GetPath(ctx, ctx.attr.includes[0])
+ return _GetPath(ctx, ctx.label.package + "/" + ctx.attr.includes[0])
-def _CcHdrs(srcs, use_grpc_plugin=False):
- ret = [s[:-len(".proto")] + ".pb.h" for s in srcs]
- if use_grpc_plugin:
- ret += [s[:-len(".proto")] + ".grpc.pb.h" for s in srcs]
- return ret
+def _CcHdrs(srcs, use_grpc_plugin = False):
+ ret = [s[:-len(".proto")] + ".pb.h" for s in srcs]
+ if use_grpc_plugin:
+ ret += [s[:-len(".proto")] + ".grpc.pb.h" for s in srcs]
+ return ret
-def _CcSrcs(srcs, use_grpc_plugin=False):
- ret = [s[:-len(".proto")] + ".pb.cc" for s in srcs]
- if use_grpc_plugin:
- ret += [s[:-len(".proto")] + ".grpc.pb.cc" for s in srcs]
- return ret
+def _CcSrcs(srcs, use_grpc_plugin = False):
+ ret = [s[:-len(".proto")] + ".pb.cc" for s in srcs]
+ if use_grpc_plugin:
+ ret += [s[:-len(".proto")] + ".grpc.pb.cc" for s in srcs]
+ return ret
-def _CcOuts(srcs, use_grpc_plugin=False):
- return _CcHdrs(srcs, use_grpc_plugin) + _CcSrcs(srcs, use_grpc_plugin)
+def _CcOuts(srcs, use_grpc_plugin = False):
+ return _CcHdrs(srcs, use_grpc_plugin) + _CcSrcs(srcs, use_grpc_plugin)
-def _PyOuts(srcs, use_grpc_plugin=False):
- ret = [s[:-len(".proto")] + "_pb2.py" for s in srcs]
- if use_grpc_plugin:
- ret += [s[:-len(".proto")] + "_pb2_grpc.py" for s in srcs]
- return ret
+def _PyOuts(srcs, use_grpc_plugin = False):
+ ret = [s[:-len(".proto")] + "_pb2.py" for s in srcs]
+ if use_grpc_plugin:
+ ret += [s[:-len(".proto")] + "_pb2_grpc.py" for s in srcs]
+ return ret
-def _RelativeOutputPath(path, include, dest=""):
- if include == None:
- return path
+def _RelativeOutputPath(path, include, dest = ""):
+ if include == None:
+ return path
- if not path.startswith(include):
- fail("Include path %s isn't part of the path %s." % (include, path))
+ if not path.startswith(include):
+ fail("Include path %s isn't part of the path %s." % (include, path))
- if include and include[-1] != '/':
- include = include + '/'
- if dest and dest[-1] != '/':
- dest = dest + '/'
+ if include and include[-1] != "/":
+ include = include + "/"
+ if dest and dest[-1] != "/":
+ dest = dest + "/"
- path = path[len(include):]
- return dest + path
+ path = path[len(include):]
+ return dest + path
def _proto_gen_impl(ctx):
- """General implementation for generating protos"""
- srcs = ctx.files.srcs
- deps = []
- deps += ctx.files.srcs
- source_dir = _SourceDir(ctx)
- gen_dir = _GenDir(ctx)
- if source_dir:
- import_flags = ["-I" + source_dir, "-I" + gen_dir]
- else:
- import_flags = ["-I."]
+ """General implementation for generating protos"""
+ srcs = ctx.files.srcs
+ deps = []
+ deps += ctx.files.srcs
+ source_dir = _SourceDir(ctx)
+ gen_dir = _GenDir(ctx)
+ if source_dir:
+ import_flags = ["-I" + source_dir, "-I" + gen_dir]
+ else:
+ import_flags = ["-I."]
- for dep in ctx.attr.deps:
- import_flags += dep.proto.import_flags
- deps += dep.proto.deps
+ for dep in ctx.attr.deps:
+ import_flags += dep.proto.import_flags
+ deps += dep.proto.deps
- args = []
- if ctx.attr.gen_cc:
- args += ["--cpp_out=" + gen_dir]
- if ctx.attr.gen_py:
- args += ["--python_out=" + gen_dir]
+ args = []
+ if ctx.attr.gen_cc:
+ args += ["--cpp_out=" + gen_dir]
+ if ctx.attr.gen_py:
+ args += ["--python_out=" + gen_dir]
- inputs = srcs + deps
- if ctx.executable.plugin:
- plugin = ctx.executable.plugin
- lang = ctx.attr.plugin_language
- if not lang and plugin.basename.startswith('protoc-gen-'):
- lang = plugin.basename[len('protoc-gen-'):]
- if not lang:
- fail("cannot infer the target language of plugin", "plugin_language")
+ inputs = srcs + deps
+ if ctx.executable.plugin:
+ plugin = ctx.executable.plugin
+ lang = ctx.attr.plugin_language
+ if not lang and plugin.basename.startswith("protoc-gen-"):
+ lang = plugin.basename[len("protoc-gen-"):]
+ if not lang:
+ fail("cannot infer the target language of plugin", "plugin_language")
- outdir = gen_dir
- if ctx.attr.plugin_options:
- outdir = ",".join(ctx.attr.plugin_options) + ":" + outdir
- args += ["--plugin=protoc-gen-%s=%s" % (lang, plugin.path)]
- args += ["--%s_out=%s" % (lang, outdir)]
- inputs += [plugin]
+ outdir = gen_dir
+ if ctx.attr.plugin_options:
+ outdir = ",".join(ctx.attr.plugin_options) + ":" + outdir
+ args += ["--plugin=protoc-gen-%s=%s" % (lang, plugin.path)]
+ args += ["--%s_out=%s" % (lang, outdir)]
+ inputs += [plugin]
- if args:
- ctx.action(
- inputs=inputs,
- outputs=ctx.outputs.outs,
- arguments=args + import_flags + [s.path for s in srcs],
- executable=ctx.executable.protoc,
- mnemonic="ProtoCompile",
- use_default_shell_env=True,
+ if args:
+ ctx.action(
+ inputs = inputs,
+ outputs = ctx.outputs.outs,
+ arguments = args + import_flags + [s.path for s in srcs],
+ executable = ctx.executable.protoc,
+ mnemonic = "ProtoCompile",
+ use_default_shell_env = True,
+ )
+
+ return struct(
+ proto = struct(
+ srcs = srcs,
+ import_flags = import_flags,
+ deps = deps,
+ ),
)
- return struct(
- proto=struct(
- srcs=srcs,
- import_flags=import_flags,
- deps=deps,
- ),
- )
-
proto_gen = rule(
attrs = {
"srcs": attr.label_list(allow_files = True),
@@ -170,248 +172,254 @@
def cc_proto_library(
name,
- srcs=[],
- deps=[],
- cc_libs=[],
- include=None,
- protoc="@com_google_protobuf//:protoc",
- internal_bootstrap_hack=False,
- use_grpc_plugin=False,
- default_runtime="@com_google_protobuf//:protobuf",
+ srcs = [],
+ deps = [],
+ cc_libs = [],
+ include = None,
+ protoc = "@com_google_protobuf//:protoc",
+ internal_bootstrap_hack = False,
+ use_grpc_plugin = False,
+ default_runtime = "@com_google_protobuf//:protobuf",
**kargs):
- """Bazel rule to create a C++ protobuf library from proto source files
+ """Bazel rule to create a C++ protobuf library from proto source files
- NOTE: the rule is only an internal workaround to generate protos. The
- interface may change and the rule may be removed when bazel has introduced
- the native rule.
+ NOTE: the rule is only an internal workaround to generate protos. The
+ interface may change and the rule may be removed when bazel has introduced
+ the native rule.
- Args:
- name: the name of the cc_proto_library.
- srcs: the .proto files of the cc_proto_library.
- deps: a list of dependency labels; must be cc_proto_library.
- cc_libs: a list of other cc_library targets depended by the generated
- cc_library.
- include: a string indicating the include path of the .proto files.
- protoc: the label of the protocol compiler to generate the sources.
- internal_bootstrap_hack: a flag indicate the cc_proto_library is used only
- for bootstraping. When it is set to True, no files will be generated.
- The rule will simply be a provider for .proto files, so that other
- cc_proto_library can depend on it.
- use_grpc_plugin: a flag to indicate whether to call the grpc C++ plugin
- when processing the proto files.
- default_runtime: the implicitly default runtime which will be depended on by
- the generated cc_library target.
- **kargs: other keyword arguments that are passed to cc_library.
+ Args:
+ name: the name of the cc_proto_library.
+ srcs: the .proto files of the cc_proto_library.
+ deps: a list of dependency labels; must be cc_proto_library.
+ cc_libs: a list of other cc_library targets depended by the generated
+ cc_library.
+ include: a string indicating the include path of the .proto files.
+ protoc: the label of the protocol compiler to generate the sources.
+ internal_bootstrap_hack: a flag indicate the cc_proto_library is used only
+ for bootstraping. When it is set to True, no files will be generated.
+ The rule will simply be a provider for .proto files, so that other
+ cc_proto_library can depend on it.
+ use_grpc_plugin: a flag to indicate whether to call the grpc C++ plugin
+ when processing the proto files.
+ default_runtime: the implicitly default runtime which will be depended on by
+ the generated cc_library target.
+ **kargs: other keyword arguments that are passed to cc_library.
- """
+ """
- includes = []
- if include != None:
- includes = [include]
+ includes = []
+ if include != None:
+ includes = [include]
- if internal_bootstrap_hack:
- # For pre-checked-in generated files, we add the internal_bootstrap_hack
- # which will skip the codegen action.
+ if internal_bootstrap_hack:
+ # For pre-checked-in generated files, we add the internal_bootstrap_hack
+ # which will skip the codegen action.
+ proto_gen(
+ name = name + "_genproto",
+ srcs = srcs,
+ deps = [s + "_genproto" for s in deps],
+ includes = includes,
+ protoc = protoc,
+ visibility = ["//visibility:public"],
+ )
+
+ # An empty cc_library to make rule dependency consistent.
+ native.cc_library(
+ name = name,
+ **kargs
+ )
+ return
+
+ grpc_cpp_plugin = None
+ if use_grpc_plugin:
+ grpc_cpp_plugin = "//external:grpc_cpp_plugin"
+
+ gen_srcs = _CcSrcs(srcs, use_grpc_plugin)
+ gen_hdrs = _CcHdrs(srcs, use_grpc_plugin)
+ outs = gen_srcs + gen_hdrs
+
proto_gen(
- name=name + "_genproto",
- srcs=srcs,
- deps=[s + "_genproto" for s in deps],
- includes=includes,
- protoc=protoc,
- visibility=["//visibility:public"],
+ name = name + "_genproto",
+ srcs = srcs,
+ deps = [s + "_genproto" for s in deps],
+ includes = includes,
+ protoc = protoc,
+ plugin = grpc_cpp_plugin,
+ plugin_language = "grpc",
+ gen_cc = 1,
+ outs = outs,
+ visibility = ["//visibility:public"],
)
- # An empty cc_library to make rule dependency consistent.
+
+ if default_runtime and not default_runtime in cc_libs:
+ cc_libs = cc_libs + [default_runtime]
+ if use_grpc_plugin:
+ cc_libs = cc_libs + ["//external:grpc_lib"]
+
native.cc_library(
- name=name,
- **kargs)
- return
-
- grpc_cpp_plugin = None
- if use_grpc_plugin:
- grpc_cpp_plugin = "//external:grpc_cpp_plugin"
-
- gen_srcs = _CcSrcs(srcs, use_grpc_plugin)
- gen_hdrs = _CcHdrs(srcs, use_grpc_plugin)
- outs = gen_srcs + gen_hdrs
-
- proto_gen(
- name=name + "_genproto",
- srcs=srcs,
- deps=[s + "_genproto" for s in deps],
- includes=includes,
- protoc=protoc,
- plugin=grpc_cpp_plugin,
- plugin_language="grpc",
- gen_cc=1,
- outs=outs,
- visibility=["//visibility:public"],
- )
-
- if default_runtime and not default_runtime in cc_libs:
- cc_libs = cc_libs + [default_runtime]
- if use_grpc_plugin:
- cc_libs = cc_libs + ["//external:grpc_lib"]
-
- native.cc_library(
- name=name,
- srcs=gen_srcs,
- hdrs=gen_hdrs,
- deps=cc_libs + deps,
- includes=includes,
- **kargs)
+ name = name,
+ srcs = gen_srcs,
+ hdrs = gen_hdrs,
+ deps = cc_libs + deps,
+ includes = includes,
+ **kargs
+ )
def internal_gen_well_known_protos_java(srcs):
- """Bazel rule to generate the gen_well_known_protos_java genrule
+ """Bazel rule to generate the gen_well_known_protos_java genrule
- Args:
- srcs: the well known protos
- """
- root = Label("%s//protobuf_java" % native.repository_name()).workspace_root
- pkg = PACKAGE_NAME + "/" if PACKAGE_NAME else ""
- if root == "":
- include = " -I%ssrc " % pkg
- else:
- include = " -I%s/%ssrc " % (root, pkg)
- native.genrule(
- name = "gen_well_known_protos_java",
- srcs = srcs,
- outs = [
- "wellknown.srcjar",
- ],
- cmd = "$(location :protoc) --java_out=$(@D)/wellknown.jar" +
- " %s $(SRCS) " % include +
- " && mv $(@D)/wellknown.jar $(@D)/wellknown.srcjar",
- tools = [":protoc"],
- )
+ Args:
+ srcs: the well known protos
+ """
+ root = Label("%s//protobuf_java" % native.repository_name()).workspace_root
+ pkg = PACKAGE_NAME + "/" if PACKAGE_NAME else ""
+ if root == "":
+ include = " -I%ssrc " % pkg
+ else:
+ include = " -I%s/%ssrc " % (root, pkg)
+ native.genrule(
+ name = "gen_well_known_protos_java",
+ srcs = srcs,
+ outs = [
+ "wellknown.srcjar",
+ ],
+ cmd = "$(location :protoc) --java_out=$(@D)/wellknown.jar" +
+ " %s $(SRCS) " % include +
+ " && mv $(@D)/wellknown.jar $(@D)/wellknown.srcjar",
+ tools = [":protoc"],
+ )
def internal_copied_filegroup(name, srcs, strip_prefix, dest, **kwargs):
- """Macro to copy files to a different directory and then create a filegroup.
+ """Macro to copy files to a different directory and then create a filegroup.
- This is used by the //:protobuf_python py_proto_library target to work around
- an issue caused by Python source files that are part of the same Python
- package being in separate directories.
+ This is used by the //:protobuf_python py_proto_library target to work around
+ an issue caused by Python source files that are part of the same Python
+ package being in separate directories.
- Args:
- srcs: The source files to copy and add to the filegroup.
- strip_prefix: Path to the root of the files to copy.
- dest: The directory to copy the source files into.
- **kwargs: extra arguments that will be passesd to the filegroup.
- """
- outs = [_RelativeOutputPath(s, strip_prefix, dest) for s in srcs]
+ Args:
+ srcs: The source files to copy and add to the filegroup.
+ strip_prefix: Path to the root of the files to copy.
+ dest: The directory to copy the source files into.
+ **kwargs: extra arguments that will be passesd to the filegroup.
+ """
+ outs = [_RelativeOutputPath(s, strip_prefix, dest) for s in srcs]
- native.genrule(
- name = name + "_genrule",
- srcs = srcs,
- outs = outs,
- cmd = " && ".join(
- ["cp $(location %s) $(location %s)" %
- (s, _RelativeOutputPath(s, strip_prefix, dest)) for s in srcs]),
- )
+ native.genrule(
+ name = name + "_genrule",
+ srcs = srcs,
+ outs = outs,
+ cmd = " && ".join(
+ ["cp $(location %s) $(location %s)" %
+ (s, _RelativeOutputPath(s, strip_prefix, dest)) for s in srcs],
+ ),
+ )
- native.filegroup(
- name = name,
- srcs = outs,
- **kwargs)
+ native.filegroup(
+ name = name,
+ srcs = outs,
+ **kwargs
+ )
def py_proto_library(
name,
- srcs=[],
- deps=[],
- py_libs=[],
- py_extra_srcs=[],
- include=None,
- default_runtime="@com_google_protobuf//:protobuf_python",
- protoc="@com_google_protobuf//:protoc",
- use_grpc_plugin=False,
+ srcs = [],
+ deps = [],
+ py_libs = [],
+ py_extra_srcs = [],
+ include = None,
+ default_runtime = "@com_google_protobuf//:protobuf_python",
+ protoc = "@com_google_protobuf//:protoc",
+ use_grpc_plugin = False,
**kargs):
- """Bazel rule to create a Python protobuf library from proto source files
+ """Bazel rule to create a Python protobuf library from proto source files
- NOTE: the rule is only an internal workaround to generate protos. The
- interface may change and the rule may be removed when bazel has introduced
- the native rule.
+ NOTE: the rule is only an internal workaround to generate protos. The
+ interface may change and the rule may be removed when bazel has introduced
+ the native rule.
- Args:
- name: the name of the py_proto_library.
- srcs: the .proto files of the py_proto_library.
- deps: a list of dependency labels; must be py_proto_library.
- py_libs: a list of other py_library targets depended by the generated
- py_library.
- py_extra_srcs: extra source files that will be added to the output
- py_library. This attribute is used for internal bootstrapping.
- include: a string indicating the include path of the .proto files.
- default_runtime: the implicitly default runtime which will be depended on by
- the generated py_library target.
- protoc: the label of the protocol compiler to generate the sources.
- use_grpc_plugin: a flag to indicate whether to call the Python C++ plugin
- when processing the proto files.
- **kargs: other keyword arguments that are passed to cc_library.
+ Args:
+ name: the name of the py_proto_library.
+ srcs: the .proto files of the py_proto_library.
+ deps: a list of dependency labels; must be py_proto_library.
+ py_libs: a list of other py_library targets depended by the generated
+ py_library.
+ py_extra_srcs: extra source files that will be added to the output
+ py_library. This attribute is used for internal bootstrapping.
+ include: a string indicating the include path of the .proto files.
+ default_runtime: the implicitly default runtime which will be depended on by
+ the generated py_library target.
+ protoc: the label of the protocol compiler to generate the sources.
+ use_grpc_plugin: a flag to indicate whether to call the Python C++ plugin
+ when processing the proto files.
+ **kargs: other keyword arguments that are passed to cc_library.
- """
- outs = _PyOuts(srcs, use_grpc_plugin)
+ """
+ outs = _PyOuts(srcs, use_grpc_plugin)
- includes = []
- if include != None:
- includes = [include]
+ includes = []
+ if include != None:
+ includes = [include]
- grpc_python_plugin = None
- if use_grpc_plugin:
- grpc_python_plugin = "//external:grpc_python_plugin"
- # Note: Generated grpc code depends on Python grpc module. This dependency
- # is not explicitly listed in py_libs. Instead, host system is assumed to
- # have grpc installed.
+ grpc_python_plugin = None
+ if use_grpc_plugin:
+ grpc_python_plugin = "//external:grpc_python_plugin"
+ # Note: Generated grpc code depends on Python grpc module. This dependency
+ # is not explicitly listed in py_libs. Instead, host system is assumed to
+ # have grpc installed.
- proto_gen(
- name=name + "_genproto",
- srcs=srcs,
- deps=[s + "_genproto" for s in deps],
- includes=includes,
- protoc=protoc,
- gen_py=1,
- outs=outs,
- visibility=["//visibility:public"],
- plugin=grpc_python_plugin,
- plugin_language="grpc"
- )
+ proto_gen(
+ name = name + "_genproto",
+ srcs = srcs,
+ deps = [s + "_genproto" for s in deps],
+ includes = includes,
+ protoc = protoc,
+ gen_py = 1,
+ outs = outs,
+ visibility = ["//visibility:public"],
+ plugin = grpc_python_plugin,
+ plugin_language = "grpc",
+ )
- if default_runtime and not default_runtime in py_libs + deps:
- py_libs = py_libs + [default_runtime]
+ if default_runtime and not default_runtime in py_libs + deps:
+ py_libs = py_libs + [default_runtime]
- native.py_library(
- name=name,
- srcs=outs+py_extra_srcs,
- deps=py_libs+deps,
- imports=includes,
- **kargs)
+ native.py_library(
+ name = name,
+ srcs = outs + py_extra_srcs,
+ deps = py_libs + deps,
+ imports = includes,
+ **kargs
+ )
def internal_protobuf_py_tests(
- name,
- modules=[],
- **kargs):
- """Bazel rules to create batch tests for protobuf internal.
+ name,
+ modules = [],
+ **kargs):
+ """Bazel rules to create batch tests for protobuf internal.
- Args:
- name: the name of the rule.
- modules: a list of modules for tests. The macro will create a py_test for
- each of the parameter with the source "google/protobuf/%s.py"
- kargs: extra parameters that will be passed into the py_test.
+ Args:
+ name: the name of the rule.
+ modules: a list of modules for tests. The macro will create a py_test for
+ each of the parameter with the source "google/protobuf/%s.py"
+ kargs: extra parameters that will be passed into the py_test.
- """
- for m in modules:
- s = "python/google/protobuf/internal/%s.py" % m
- native.py_test(
- name="py_%s" % m,
- srcs=[s],
- main=s,
- **kargs)
-
+ """
+ for m in modules:
+ s = "python/google/protobuf/internal/%s.py" % m
+ native.py_test(
+ name = "py_%s" % m,
+ srcs = [s],
+ main = s,
+ **kargs
+ )
def check_protobuf_required_bazel_version():
- """For WORKSPACE files, to check the installed version of bazel.
+ """For WORKSPACE files, to check the installed version of bazel.
- This ensures bazel supports our approach to proto_library() depending on a
- copied filegroup. (Fixed in bazel 0.5.4)
- """
- expected = apple_common.dotted_version("0.5.4")
- current = apple_common.dotted_version(native.bazel_version)
- if current.compare_to(expected) < 0:
- fail("Bazel must be newer than 0.5.4")
+ This ensures bazel supports our approach to proto_library() depending on a
+ copied filegroup. (Fixed in bazel 0.5.4)
+ """
+ expected = apple_common.dotted_version("0.5.4")
+ current = apple_common.dotted_version(native.bazel_version)
+ if current.compare_to(expected) < 0:
+ fail("Bazel must be newer than 0.5.4")
