bazel: Build pybind module and test

BUILD.bazel

@@ -1,6 +1,7 @@
-load("@buildifier_prebuilt//:rules.bzl", "buildifier", "buildifier_test")
+load("@pybind11_bazel//:build_defs.bzl", "pybind_extension")
 load("@rules_gazebo//gazebo:headers.bzl", "gz_configure_header", "gz_export_header")
 load("@rules_license//rules:license.bzl", "license")
+load("@rules_python//python:py_test.bzl", "py_test")
 
 package(
     default_applicable_licenses = [":license"],
@@ -76,6 +77,28 @@ cc_library(
     ],
 )
 
+pybind_extension(
+    name = "gz/math8",
+    srcs = glob(
+        include = [
+            "src/python_pybind11/src/*.cc",
+            "src/python_pybind11/src/*.hh",
+        ],
+    ),
+    defines = [
+        "BINDINGS_MODULE_NAME=math8",
+    ],
+    linkstatic = True,
+    visibility = ["//visibility:private"],
+    deps = [":gz-math"],
+)
+
+py_library(
+    name = "python",
+    data = [":gz/math8"],
+    visibility = ["//visibility:public"],
+)
+
 test_sources = glob(
     include = [
         "src/*_TEST.cc",
@@ -95,18 +118,18 @@ test_sources = glob(
     for src in test_sources
 ]
 
-buildifier(
-    name = "buildifier.fix",
-    exclude_patterns = ["./.git/*"],
-    lint_mode = "fix",
-    mode = "fix",
+py_test_sources = glob(
+    include = [
+        "src/python_pybind11/test/*_TEST.py",
+    ],
 )
 
-buildifier_test(
-    name = "buildifier.test",
-    exclude_patterns = ["./.git/*"],
-    lint_mode = "warn",
-    mode = "diff",
-    no_sandbox = True,
-    workspace = "//:MODULE.bazel",
-)
+[
+    py_test(
+        name = src.replace("/", "_").replace(".py", "_py").replace("src_python_pybind11_test_", ""),
+        srcs = [src],
+        main = src,
+        deps = [":python"],
+    )
+    for src in py_test_sources
+]

MODULE.bazel

@@ -8,6 +8,9 @@ bazel_dep(name = "buildifier_prebuilt", version = "7.3.1")
 bazel_dep(name = "googletest", version = "1.14.0")
 bazel_dep(name = "rules_license", version = "1.0.0")
 bazel_dep(name = "eigen", version = "3.4.0")
+bazel_dep(name = "pybind11_bazel", version = "2.13.6")
+bazel_dep(name = "rules_python", version = "0.36.0")
+bazel_dep(name = "platforms", version = "0.0.11")
 
 # Gazebo Dependencies
 bazel_dep(name = "rules_gazebo", version = "0.0.2")
@@ -17,3 +20,20 @@ archive_override(
     strip_prefix = "gz-utils-gz-utils3",
     urls = ["https://github.com/gazebosim/gz-utils/archive/refs/heads/gz-utils3.tar.gz"],
 )
+
+PYTHON_VERSIONS = [
+    "3.9",
+    "3.10",
+    "3.11",
+    "3.12",
+]
+
+python = use_extension("@rules_python//python/extensions:python.bzl", "python")
+
+[
+    python.toolchain(
+        is_default = python_version == PYTHON_VERSIONS[-1],
+        python_version = python_version,
+    )
+    for python_version in PYTHON_VERSIONS
+]

examples/BUILD.bazel

@@ -22,3 +22,16 @@ example_sources = glob(
         "//:gz-math",
     ],
 ) for src in example_sources]
+
+example_sources_py = glob(
+    include = [
+        "*.py",
+    ],
+)
+
+[py_binary(
+    name = src.replace(".py", "_py"),
+    srcs = [src],
+    main = src,
+    deps = ["//:python"],
+) for src in example_sources_py]