def copy_proto_go_source(target, source, env):
 shutil.copy2(str(source[0]), str(target[0]))
 return None

def copy_proto_go_source ( target , source , env ) : shutil . copy2 ( str ( source [ 0 ] ) , str ( target [ 0 ] ) ) return None
copy go source file generated by protobuf into go standard directory .