Enable buildifier

.github/workflows/build_test.yml

@@ -33,6 +33,12 @@ jobs:
         with:
           path: "/home/runner/.cache/bazel"
           key: ${{ hashFiles('.bazelrc', '.bazelversion', 'WORKSPACE', 'WORKSPACE.bazel', 'MODULE.bazel') }}
+      - name: Install buildifier
+        run: |
+          curl -f -s -L -o /usr/local/bin/buildifier https://github.com/bazelbuild/buildtools/releases/download/v7.3.1/buildifier-linux-$(arch | sed 's/aarch64/arm64/;s/x86_64/amd64/')
+          chmod a+x /usr/local/bin/buildifier
+      - name: Run buildifier
+        run: buildifier -mode check -r .
       - name: Build
         # TODO(evan.flynn): uncomment once the rules are properly fixed
         # run: bazel build //...

README.md

@@ -35,23 +35,23 @@ Here is a short list of major restrictions:
 
 ### Prerequisites
 
-Bazel needs to be available. We recommend using [bazelisk](https://github.com/bazelbuild/bazelisk)
-as a launch tool for Bazel.
+Bazel needs to be available. It is recommended to use [bazelisk](https://github.com/bazelbuild/bazelisk)
+as the launch tool for Bazel.
 
 ### Workspace setup
 
 Create an empty folder and add the following files to it:
 * `WORKSPACE` file:
 
   ```python
-  workspace(name = "my_first_bazel_ros_workspace") # choose your workspace name here
+  workspace(name = "my_first_bazel_ros_workspace")  # choose a workspace name here
   # load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
   load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
 
-  RULES_ROS_VERSION = "xxx" # TODO: where to find the right version
+  RULES_ROS_VERSION = "xxx"  # TODO: where to find the right version
   RUIES_ROS_SHA = "xxx"
 
-  # until we have a first release, please use this:
+  # until there is an initial release, use the following:
   git_repository(
       name = "rules_ros",
       remote = "https://github.com/ApexAI/rules_ros.git",
@@ -67,7 +67,7 @@ Create an empty folder and add the following files to it:
   #)
 
   load("@rules_ros//repos/config:defs.bzl", "configure_ros2")
-  configure_ros2(distro = "humble") # currently only Humble is supported
+  configure_ros2(distro = "humble")  # currently only Humble is supported
 
   load("@ros2_config//:setup.bzl", "setup")
   setup()
@@ -87,7 +87,7 @@ Create an empty folder and add the following files to it:
 
 * `.bazelrc` file:
 
-  ```bash
+  ```shell
   # enable incompatible Python init mode
   build --incompatible_default_to_explicit_init_py
 
@@ -99,41 +99,44 @@ Create an empty folder and add the following files to it:
   build --host_cxxopt="-std=c++17"
   ```
 
-* `.bazelversion` file (in case you are using bazelisk):
+* `.bazelversion` file (if `bazelisk` is being used):
 
-```text
-6.5.0
-```
+  ```text
+  6.5.0
+  ```
 
 ### Run Bazel example
 
 To **build** an example delivered in the `rules_ros` repository run, e.g.
 
-```bash
+```shell
 bazel build @rules_ros//examples/hello_world
 ```
-from anywhere within your workspace.
+
+from anywhere within the workspace.
 
 **Executing** the example can be done by calling
 
-```bash
+```shell
 bazel run @rules_ros//examples/hello_world
 ```
 Note that no sourcing is necessary. Bazel will take care of all the dependencies. 
 
 **Deploying** a package archive to an install folder can be done by
 
-```bash
+```shell
 bazel run @rules_ros//examples:rules_ros_examples.install <install_folder>
 ```
-Now we are back to working with ROS as usual. Source the package as usual:
 
-```bash
+Now the environment is ready to work with ROS as usual. Source the package as usual with:
+
+```shell
 source <install_folder>/setup.bash
 ```
+
 and run an executable with
 
-```bash
+```shell
 ros2 run hello_world hello_world
 ```
 
@@ -143,11 +146,12 @@ ros2 run hello_world hello_world
 
 In this setup, a hermetic Python interpreter is included. The version is specified in
 `thirdparty/python/repositories.bzl`. Python packages specified in
-`thirdparty/python/requirements_lock.in` are available for use. If you need to add a package,
-you must run
-```console
+`thirdparty/python/requirements_lock.in` are available for use. If a package needs to be added, run
+
+```shell
 bazel run @rules_ros//thirdparty/python:requirements_lock.update
 ```
+
 to pin specific versions of the dependencies. In the future there will be a possibility to
 inject a customization in the WORKSPACE file.
 
@@ -159,12 +163,14 @@ will be available as `@ros2.rclcpp` with all targets specified in the BUILD file
 `repos/config/ros2.rclcpp.BUILD`. The precise location where the build files will be injected
 into the `rclcpp` repo is specified in the index file `repos/config/bazel.repos`.
 
-Therefore, if you need to depend on `rclcpp` in you code, you need to add `"@ros2.rclcpp//rclcpp"`
-as a dependency in your `cc_binary` or `cc_library` target.
+Therefore, if there is a dependency on `rclcpp`, `"@ros2.rclcpp//rclcpp"` needs to be added
+as a dependency in the `cc_binary` or `cc_library` target.
 
 The exact version of a ROS 2 repository is pinned in the file `repos/config/ros2_<distro>.lock`.
 This file can be updated for the configured distro by running:
-```console
+
+```shell
 bazel run @rules_ros//repos/config:repos_lock.update
 ```
+
 In the future there will be a possibility to inject any customization in the WORKSPACE file.

examples/hello_world/BUILD.bazel

@@ -29,4 +29,4 @@ ros_pkg(
     pkg_name = "hello_world",
     version = "1.0.0",
     visibility = ["//visibility:public"],
-)
+)

pkg/defs.bzl

@@ -13,16 +13,16 @@
 # limitations under the License.
 
 load("@rules_pkg//pkg:tar.bzl", _pkg_tar = "pkg_tar")
-load(
-    "@rules_ros//pkg/detail:ros_pkg.bzl",
-    _ros_pkg = "ros_pkg",
-    _ros_pkg_set = "ros_pkg_set",
-)
 load(
     "@rules_ros//pkg/detail:ros_archive.bzl",
     _ros_archive_install_command = "ros_archive_install_command",
     _ros_archive_pkg_files = "ros_archive_pkg_files",
 )
+load(
+    "@rules_ros//pkg/detail:ros_pkg.bzl",
+    _ros_pkg = "ros_pkg",
+    _ros_pkg_set = "ros_pkg_set",
+)
 
 ros_pkg = _ros_pkg
 ros_pkg_set = _ros_pkg_set

pkg/detail/BUILD

@@ -12,8 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("@rules_python//python:defs.bzl", "py_binary")
 load("@python_deps//:requirements.bzl", "requirement")
+load("@rules_python//python:defs.bzl", "py_binary")
 
 exports_files(["templates/install.template"])
 

pkg/detail/ros_archive.bzl

@@ -13,6 +13,7 @@
 # limitations under the License.
 
 load("@rules_pkg//pkg:providers.bzl", "PackageFilegroupInfo", "PackageFilesInfo")
+load("@rules_ros//pkg:providers.bzl", _RosPkgInfo = "RosPkgInfo")
 load(
     ":utils.bzl",
     _add_filegroup = "add_filegroup",
@@ -21,7 +22,6 @@ load(
     _create_ros_pkg_set_info = "create_ros_pkg_set_info",
     _unique_pkg_names_or_fail = "unique_pkg_names_or_fail",
 )
-load("@rules_ros//pkg:providers.bzl", _RosPkgInfo = "RosPkgInfo")
 
 def _build_setup_bash(ctx):
     output = ctx.actions.declare_file("/".join([ctx.label.name, "setup.bash"]))

pkg/detail/ros_pkg.bzl

@@ -14,6 +14,7 @@
 
 load("@rules_pkg//pkg:providers.bzl", "PackageFilegroupInfo", "PackageFilesInfo")
 load("@rules_python//python:packaging.bzl", "PyWheelInfo")
+load("@rules_ros//pkg:providers.bzl", _RosPkgInfo = "RosPkgInfo")
 load(
     ":utils.bzl",
     _add_filegroup = "add_filegroup",
@@ -23,7 +24,6 @@ load(
     _create_ros_pkg_set_info = "create_ros_pkg_set_info",
     _unique_pkg_names_or_fail = "unique_pkg_names_or_fail",
 )
-load("@rules_ros//pkg:providers.bzl", _RosPkgInfo = "RosPkgInfo")
 
 RESOURCE_PATH_PREFIX = "share/bazel-bin/"
 LIBRARY_PATH = "lib/{pkg_name}/"

repos/config/defs.bzl

@@ -12,9 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("@rules_ros//repos/config/detail:ros2_config.bzl", "ros2_config")
 load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
 load("@rules_ros//repos/config:distros.bzl", "DISTROS")
+load("@rules_ros//repos/config/detail:ros2_config.bzl", "ros2_config")
 
 def _configure_ros2(*, name, distro_src, repos_index_overlays):
     distro_src_wo_setup_file = {k: v for k, v in distro_src.items() if k != "setup_file"}

repos/config/detail/BUILD.bazel

@@ -20,13 +20,19 @@ load("@rules_python//python:defs.bzl", "py_binary")
 
 py_binary(
     name = "repos_lock.update",
-    srcs = ["lock_repos.py", "generate_ros2_config.py"],
-    main = "lock_repos.py",
-    data = [REPOS_INDEX_FILE, REPOS_SETUP_FILE] + REPOS_OVERLAY_FILES,
+    srcs = [
+        "generate_ros2_config.py",
+        "lock_repos.py",
+    ],
     args = [
         "$(execpath {})".format(REPOS_INDEX_FILE),
         "$(execpath {})".format(REPOS_SETUP_FILE),
     ] + ["$(execpath {})".format(f) for f in REPOS_OVERLAY_FILES],
-    deps = [requirement("pyyaml")],
+    data = [
+        REPOS_INDEX_FILE,
+        REPOS_SETUP_FILE,
+    ] + REPOS_OVERLAY_FILES,
+    main = "lock_repos.py",
     visibility = ["//visibility:public"],
+    deps = [requirement("pyyaml")],
 )

repos/config/detail/generate_ros2_config.py

@@ -33,9 +33,13 @@ def setup():
 
 def print_setup(repos, output_file):
     print(HEADER, file=output_file)
+    printed_first_load = False
     for repo, spec in repos.items():
         if spec.get("bazel") is not None:
-            print(build_load_command(repo, spec), file=output_file)
+            if printed_first_load:
+                output_file.write("\n")
+            output_file.write(build_load_command(repo, spec))
+            printed_first_load = True
 
 
 def build_load_command(repo, spec):
@@ -45,7 +49,7 @@ def build_load_command(repo, spec):
         "local": build_local_load_command,
     }
     if spec.get('type') not in builder.keys():
-        return f"""
+        return f"""\
     print("WARNING: Unknown repo type {spec.get('type')} for repo @{repo.replace('/', '.')}")
 """
     return builder[spec.get('type')](repo, spec)
@@ -54,7 +58,7 @@ def build_load_command(repo, spec):
 def build_build_files_attr(build_files):
     if not build_files:
         return ""
-    content = '\n'.join(f"            '{k}': '{v}'," for k,v in build_files.items())
+    content = '\n'.join(f'            "{k}": "{v}",' for k,v in build_files.items())
     return f"""build_files = {{
 {content}
         }},"""

repos/config/detail/lock_repos.py

@@ -104,7 +104,7 @@ def extract_archive_root_folder(path, origin):
 
 def fetch_git_details(url, version, **kwargs):
     cwd = os.getcwd()
-    max_retries = 2
+    max_retries = 4
     for i in range(max_retries + 1):
         with tempfile.TemporaryDirectory() as tempdir:
             try:
@@ -113,7 +113,7 @@ def fetch_git_details(url, version, **kwargs):
                     "--branch", version, "--bare", "-q"],
                     capture_output = True,
                     encoding='utf8',
-                    timeout=20
+                    timeout=5
                 )
                 if result.returncode != 0:
                     if max_retries == i:

repos/config/detail/ros2_config.bzl

@@ -32,7 +32,7 @@ _archive_attrs = {
 
 def _ros2_config_impl(ctx):
     ctx.file("repos_index_file.bzl", content = "REPOS_INDEX_FILE = '{}'".format(ctx.attr.repos_index))
-    ctx.file("repos_overlay_files.bzl", content = "REPOS_OVERLAY_FILES = {}".format(["{}".format(l) for l in ctx.attr.repos_index_overlays]))
+    ctx.file("repos_overlay_files.bzl", content = "REPOS_OVERLAY_FILES = {}".format(["{}".format(i) for i in ctx.attr.repos_index_overlays]))
     ctx.file("repos_setup_file.bzl", content = "REPOS_SETUP_FILE = '{}'".format(ctx.attr.setup_file))
     ctx.symlink(ctx.attr.setup_file, "setup.bzl")
     ctx.file("WORKSPACE", content = "workspace(name = {})".format(ctx.name), executable = False)

repos/config/distros.bzl

@@ -4,10 +4,10 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 ROS_PROJECT = "https://github.com/ros2/ros2.git"
 
 _VERSIONS = [
-    ("humble", "20230925", "57495eab51338591a0117b6763827607808e26344d134d6666ded66e479bdf8b"),
     ("iron", "20230912", "fd40b4d80eb9c27f57b2b59ad8a947cd5f7f34fc67c8df1d7cc0a659127fc9f7"),
-    ("foxy", "20230620", "2cf7e3f9c5b01b7de2ec3c80097837758f3554e4f5c99a2aeca2bd7f4eb0bc1f"),
+    ("humble", "20230925", "57495eab51338591a0117b6763827607808e26344d134d6666ded66e479bdf8b"),
     ("galactic", "20221209", "fd251be0e1d16c1f943a8f083dce7b75c60fc2095404c5834209a68846be48c7"),
+    ("foxy", "20230620", "2cf7e3f9c5b01b7de2ec3c80097837758f3554e4f5c99a2aeca2bd7f4eb0bc1f"),
     ("eloquent", "2020-1212", "76f4b08bc4ecc6b126d2bdf5e8b86fa3d4b6d5101c122f7d0fd973aa77ef819a"),
     ("dashing", "20210610", "f0e00b81e93f764bef7591b0d9e3b89d73660696764663f18f926cd9795028c9"),
 ]