chore: bzlmod (#72)

* chore: bzlmod

* Update WORKSPACE.bzlmod

* fix e2e

.bcr/config.yml

@@ -0,0 +1,3 @@
+fixedReleaser:
+    login: gregmagolan
+    email: greg@aspect.dev

.bcr/metadata.template.json

@@ -0,0 +1,13 @@
+{
+    "homepage": "https://docs.aspect.build/rules/aspect_rules_rollup",
+    "maintainers": [
+        {
+            "email": "hello@aspect.dev",
+            "github": "aspect-build",
+            "name": "Aspect team"
+        }
+    ],
+    "repository": ["github:aspect-build/rules_rollup"],
+    "versions": [],
+    "yanked_versions": {}
+}

.bcr/presubmit.yml

@@ -0,0 +1,10 @@
+bcr_test_module:
+    module_path: 'e2e/smoke'
+    matrix:
+        platform: ['debian10', 'macos', 'ubuntu2004', 'windows']
+    tasks:
+        run_tests:
+            name: 'Run test module'
+            platform: ${{ platform }}
+            test_targets:
+                - '//...'

.bcr/source.template.json

@@ -0,0 +1,5 @@
+{
+    "integrity": "**leave this alone**",
+    "strip_prefix": "{REPO}-{VERSION}",
+    "url": "https://github.com/{OWNER}/{REPO}/releases/download/{TAG}/rules_rollup-{TAG}.tar.gz"
+}

.github/workflows/ci.yaml

@@ -60,14 +60,18 @@ jobs:
             matrix:
                 os: ${{ fromJSON(needs.matrix-prep-os.outputs.os) }}
                 bazelversion: ${{ fromJSON(needs.matrix-prep-bazelversion.outputs.bazelversions) }}
+                bzlmodEnabled: [true, false]
                 folder:
                     - '.'
-                    - 'e2e/workspace'
+                    - 'e2e/smoke'
                 exclude:
                     # Don't test macos with Bazel 5 to minimize macOS minutes (billed at 10X)
                     # https://docs.github.com/en/billing/managing-billing-for-github-actions/about-billing-for-github-actions#included-storage-and-minutes
                     - os: macos-latest
                       bazelversion: 5.3.2
+                    # Don't test bzlmod with Bazel 5 (not supported)
+                    - bazelversion: 5.3.2
+                      bzlmodEnabled: true
 
         # Steps represent a sequence of tasks that will be executed as part of the job
         steps:
@@ -101,9 +105,16 @@ jobs:
               # then use .bazelversion to determine which Bazel version to use
               run: echo "${{ matrix.bazelversion }}" > .bazelversion
 
+            - name: Set bzlmod flag
+              # Store the --enable_bzlmod flag that we add to the test command below
+              # only when we're running bzlmod in our test matrix.
+              id: set_bzlmod_flag
+              if: matrix.bzlmodEnabled
+              run: echo "bzlmod_flag=--enable_bzlmod" >> $GITHUB_OUTPUT
+
             - name: bazel test //...
               env:
                   # Bazelisk will download bazel to here, ensure it is cached between runs.
                   XDG_CACHE_HOME: ~/.cache/bazel-repo
               working-directory: ${{ matrix.folder }}
-              run: bazel --bazelrc=$GITHUB_WORKSPACE/.github/workflows/ci.bazelrc --bazelrc=.bazelrc test //...
+              run: bazel --bazelrc=$GITHUB_WORKSPACE/.github/workflows/ci.bazelrc --bazelrc=.bazelrc test ${{ steps.set_bzlmod_flag.outputs.bzlmod_flag }} //...

.github/workflows/release_prep.sh

@@ -23,5 +23,5 @@ http_archive(
 )
 
 EOF
-awk 'f;/--SNIP--/{f=1}' e2e/workspace/WORKSPACE
+awk 'f;/--SNIP--/{f=1}' e2e/smoke/WORKSPACE.bazel
 echo "\`\`\`"

MODULE.bazel

@@ -0,0 +1,20 @@
+"aspect-build/rules_rollup"
+
+module(
+    name = "aspect_rules_rollup",
+    compatibility_level = 1,
+    version = "0.0.0",
+)
+
+# Lower-bound (minimum) versions of direct dependencies
+bazel_dep(name = "bazel_skylib", version = "1.3.0")
+# Need #397 to skip stardoc targets
+bazel_dep(name = "aspect_bazel_lib", version = "1.30.2")
+# Need attribute 'dev' in 'npm_package_store_internal' rule
+bazel_dep(name = "aspect_rules_js", version = "1.19.0")
+bazel_dep(name = "rules_nodejs", version = "5.5.3")
+bazel_dep(name = "platforms", version = "0.0.5")
+
+rollup = use_extension("@aspect_rules_rollup//rollup:extensions.bzl", "rollup")
+rollup.toolchain(name = "rollup", rollup_version = "v2.70.2")
+use_repo(rollup, "rollup")

README.md

@@ -14,5 +14,5 @@ copy the WORKSPACE snippet into your `WORKSPACE` file.
 
 ## Usage
 
-See the API documentation in the [docs](docs/) folder and the example usage in the [example](example/) folder.
+See the [API documentation](./docs/rollup) and the example usage in the [example](example/) folder.
 Note that the example also relies on code in the `/WORKSPACE` file in the root of this repo.

e2e/smoke/BUILD

@@ -0,0 +1,16 @@
+load("@aspect_rules_rollup//rollup:defs.bzl", "rollup")
+load("@bazel_skylib//rules:build_test.bzl", "build_test")
+load("@npm//:defs.bzl", "npm_link_all_packages")
+
+npm_link_all_packages(name = "node_modules")
+
+rollup(
+    name = "bundle",
+    entry_point = "main.js",
+    node_modules = "//:node_modules",
+)
+
+build_test(
+    name = "test",
+    targets = [":bundle"],
+)

e2e/smoke/MODULE.bazel

@@ -0,0 +1,18 @@
+"Bazel dependencies"
+bazel_dep(name = "aspect_rules_rollup", dev_dependency = True, version = "0.0.0")
+bazel_dep(name = "bazel_skylib", dev_dependency = True, version = "1.3.0")
+bazel_dep(name = "aspect_rules_js", dev_dependency = True, version = "1.24.1")
+
+local_path_override(
+    module_name = "aspect_rules_rollup",
+    path = "../..",
+)
+
+npm = use_extension("@aspect_rules_js//npm:extensions.bzl", "npm")
+
+npm.npm_translate_lock(
+    name = "npm",
+    pnpm_lock = "@aspect_rules_rollup//:pnpm-lock.yaml",
+)
+
+use_repo(npm, "npm")

e2e/smoke/README.md

@@ -0,0 +1,4 @@
+# smoke test
+
+This e2e exercises the repo from an end-users perpective.
+It catches mistakes in our install instructions, or usages that fail when called from an "external" repository to rules_rollup.

e2e/workspace/WORKSPACE → e2e/smoke/WORKSPACE.bazel

@@ -30,9 +30,7 @@ load("@aspect_rules_js//npm:npm_import.bzl", "npm_translate_lock")
 
 npm_translate_lock(
     name = "npm",
-    npmrc = "//:.npmrc",
-    pnpm_lock = "//:pnpm-lock.yaml",
-    verify_node_modules_ignored = "//:.bazelignore",
+    pnpm_lock = "@aspect_rules_rollup//:pnpm-lock.yaml",
 )
 
 load("@npm//:repositories.bzl", "npm_repositories")

e2e/smoke/WORKSPACE.bzlmod

@@ -0,0 +1,2 @@
+# Marker file that this is the root of a Bazel workspace
+# This file shadows WORKSPACE.bazel when --enable_bzlmod is true

rollup/extensions.bzl

@@ -0,0 +1,37 @@
+"extensions for bzlmod"
+
+load(":repositories.bzl", "rollup_repositories")
+
+rollup_toolchain = tag_class(attrs = {
+    "name": attr.string(doc = "Base name for generated repositories"),
+    "rollup_version": attr.string(doc = "Explicit version of rollup."),
+    # TODO: support this variant
+    # "rollup_version_from": attr.string(doc = "Location of package.json which may have a version for @rollup/core."),
+})
+
+def _toolchain_extension(module_ctx):
+    registrations = {}
+    for mod in module_ctx.modules:
+        for toolchain in mod.tags.toolchain:
+            if toolchain.name in registrations.keys():
+                if toolchain.rollup_version == registrations[toolchain.name]:
+                    # No problem to register a matching toolchain twice
+                    continue
+                fail("Multiple conflicting toolchains declared for name {} ({} and {}".format(
+                    toolchain.name,
+                    toolchain.rollup_version,
+                    registrations[toolchain.name],
+                ))
+            else:
+                registrations[toolchain.name] = toolchain.rollup_version
+    for name, rollup_version in registrations.items():
+        rollup_repositories(
+            name = name,
+            rollup_version = rollup_version,
+            register = False,
+        )
+
+rollup = module_extension(
+    implementation = _toolchain_extension,
+    tag_classes = {"toolchain": rollup_toolchain},
+)