feat: get bzlmod working in root and examples folders

.bazelrc

@@ -1 +1,2 @@
 build --//:mypy=//third_party:mypy
+common --enable_bzlmod

.github/workflows/continuous-integration.yml

@@ -13,6 +13,14 @@ jobs:
       fail-fast: false
       matrix:
         bzlmodEnabled: [true, false]
+        folder: [".", "examples"]
+        exclude:
+          # No point keeping the root workspace compatible with --noenable_bzlmod
+          - folder: "."
+            bzlmodEnabled: false
+    defaults:
+      run:
+        working-directory: ${{ matrix.folder }}
 
     steps:
       # Checks-out the repository under $GITHUB_WORKSPACE, so the job can access it
@@ -22,5 +30,10 @@ jobs:
           bazelrc: common --announce_rc --color=yes --enable_bzlmod=${{ matrix.bzlmodEnabled }}
       - name: Run tests
         run: bazel test //...
+
+  integration-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
       - name: Run integration tests
         run: ./test.sh

.gitignore

@@ -1,3 +1,6 @@
+# Remove after the lockfile format is more stable
+MODULE.bazel.lock
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]

MODULE.bazel

@@ -0,0 +1,35 @@
+"Bazel dependencies under bzlmod"
+
+module(
+    name = "mypy_integration",
+    # Replaced with the tag during BCR publishing
+    version = "0.0.0",
+    compatibility_level = 1,
+)
+
+# Lower-bound dependency versions.
+# Only increase these when needed, otherwise users get warnings from Bazel about how the selected
+# version is greater than the one they specified.
+bazel_dep(name = "rules_python", version = "0.27.1")
+bazel_dep(name = "bazel_skylib", version = "1.5.0")
+
+bazel_dep(name = "buildifier_prebuilt", version = "6.4.0", dev_dependency = True)
+
+python = use_extension(
+    "@rules_python//python/extensions:python.bzl",
+    "python",
+    dev_dependency = True,
+)
+python.toolchain(python_version = "3.8")
+
+pip = use_extension(
+    "@rules_python//python/extensions:pip.bzl",
+    "pip",
+    dev_dependency = True,
+)
+pip.parse(
+    hub_name = "pypi",
+    python_version = "3.8",
+    requirements_lock = "//third_party:requirements.txt",
+)
+use_repo(pip, "pypi")

WORKSPACE

@@ -1,63 +1,2 @@
-workspace(name = "bazel_mypy_integration")
-
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
-load("//repositories:repositories.bzl", mypy_integration_repositories = "repositories")
-
-mypy_integration_repositories()
-
-load("@rules_python//python:repositories.bzl", "py_repositories", "python_register_toolchains")
-
-py_repositories()
-
-python_register_toolchains(
-    name = "python3_8",
-    python_version = "3.8",
-)
-
-load("@python3_8//:defs.bzl", python_interpreter = "interpreter")
-load("@rules_python//python:pip.bzl", "pip_parse")
-
-pip_parse(
-    name = "mypy_integration_pip_deps",
-    python_interpreter_target = python_interpreter,
-    requirements_lock = "//third_party:requirements.txt",
-)
-
-load("@mypy_integration_pip_deps//:requirements.bzl", install_mypy_deps = "install_deps")
-
-install_mypy_deps()
-
-http_archive(
-    name = "buildifier_prebuilt",
-    sha256 = "8ada9d88e51ebf5a1fdff37d75ed41d51f5e677cdbeafb0a22dda54747d6e07e",
-    strip_prefix = "buildifier-prebuilt-6.4.0",
-    urls = [
-        "http://github.com/keith/buildifier-prebuilt/archive/6.4.0.tar.gz",
-    ],
-)
-
-load("@buildifier_prebuilt//:deps.bzl", "buildifier_prebuilt_deps")
-
-buildifier_prebuilt_deps()
-
-load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
-
-bazel_skylib_workspace()
-
-load("@buildifier_prebuilt//:defs.bzl", "buildifier_prebuilt_register_toolchains")
-
-buildifier_prebuilt_register_toolchains()
-
-http_archive(
-    name = "com_google_protobuf",
-    sha256 = "d19643d265b978383352b3143f04c0641eea75a75235c111cc01a1350173180e",
-    strip_prefix = "protobuf-25.3",
-    urls = [
-        "https://mirror.bazel.build/github.com/protocolbuffers/protobuf/archive/v25.3.tar.gz",
-        "https://github.com/protocolbuffers/protobuf/archive/v25.3.tar.gz",
-    ],
-)
-
-load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
-
-protobuf_deps()
+# Marker file that this is the root of a Bazel workspace.
+# Dependencies appear in MODULE.bazel

examples/.bazelrc

@@ -1 +1,2 @@
 build --@mypy_integration//:mypy=//tools/typing:mypy
+common --java_runtime_version=remotejdk_11

examples/MODULE.bazel

@@ -0,0 +1,32 @@
+"Bazel dependencies, used under --enable_bzlmod"
+
+module(
+    name = "mypy-integration-examples",
+    version = "0.0.0",
+    compatibility_level = 1,
+)
+
+bazel_dep(name = "mypy_integration", version = "0.0.0")
+bazel_dep(name = "rules_java", version = "7.4.0")
+bazel_dep(name = "rules_python", version = "0.27.1")
+
+local_path_override(
+    module_name = "mypy_integration",
+    path = "..",
+)
+
+python = use_extension("@rules_python//python/extensions:python.bzl", "python")
+python.toolchain(python_version = "3.8")
+
+pip = use_extension("@rules_python//python/extensions:pip.bzl", "pip")
+pip.parse(
+    hub_name = "my_deps",
+    python_version = "3.8",
+    requirements_lock = "//third_party:requirements.txt",
+)
+pip.parse(
+    hub_name = "my_mypy_deps",
+    python_version = "3.8",
+    requirements_lock = "//tools/typing:mypy_requirements.txt",
+)
+use_repo(pip, "my_deps", "my_mypy_deps")

examples/WORKSPACE.bzlmod

@@ -0,0 +1 @@
+# Under --enable_bzlmod, this file shadows WORKSPACE

third_party/BUILD

@@ -1,4 +1,4 @@
-load("@mypy_integration_pip_deps//:requirements.bzl", "requirement")
+load("@pypi//:requirements.bzl", "requirement")
 load("@rules_python//python:pip.bzl", "compile_pip_requirements")
 
 alias(