chore: add Aspect Workflows

.aspect/workflows/BUILD.bazel

@@ -0,0 +1,13 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
+exports_files(["config.yaml"])
+
+bzl_library(
+    name = "deps",
+    srcs = ["deps.bzl"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "@bazel_tools//tools/build_defs/repo:http.bzl",
+        "@bazel_tools//tools/build_defs/repo:utils.bzl",
+    ],
+)

.aspect/workflows/README.md

@@ -0,0 +1,18 @@
+# Aspect Workflows demonstration deployment
+
+This deployment of [Aspect Workflows](https://www.aspect.build/workflows) is configured to run on GCP + CircleCI.
+
+You can see this Aspect Workflows demonstration deployment live at https://app.circleci.com/pipelines/github/aspect-build/rules_terser.
+
+The two components of the configuration in this repository are,
+
+1. Aspect Workflows configuration yaml
+1. CircleCI pipeline configuration
+
+## Aspect Workflows configuration yaml
+
+This is the [config.yaml](./config.yaml) file in this directory.
+
+## CircleCI pipeline configuration
+
+This is the [.circleci/config.yml](../../.circleci/config.yml) file.

.aspect/workflows/bazelrc

@@ -0,0 +1,10 @@
+# build without the bytes
+common --remote_download_outputs=minimal
+common --nobuild_runfile_links
+
+common:rbe --extra_execution_platforms=@aspect_bazel_lib//platforms:x86_64_linux_remote
+common:rbe --host_platform=@aspect_bazel_lib//platforms:x86_64_linux_remote
+common:rbe --remote_executor=unix:///mnt/ephemeral/buildbarn/.cache/bb_clientd/grpc
+common:rbe --genrule_strategy=remote,local
+common:rbe --jobs=32
+common:rbe --remote_timeout=3600

.aspect/workflows/config.yaml

@@ -0,0 +1,55 @@
+queue: oss-gcp-default
+bazel:
+  flags:
+    - --config=rbe
+workspaces:
+  .:
+    tasks:
+      - test:
+          targets:
+            - //...
+      - configure:
+          bazel:
+            flags: [] # TODO: Aspect CLI does not support --config for configure cmd
+  e2e/smoke:
+    icon: bazel
+    tasks:
+      - test:
+          queue: oss-gcp-small
+      - format:
+          without: true
+      - gazelle:
+          without: true
+      - configure:
+          without: true
+      - buildifier:
+          without: true
+      - delivery:
+          without: true
+tasks:
+  - test:
+  - format:
+      queue: oss-gcp-small
+  - gazelle:
+      queue: oss-gcp-small
+  - configure:
+      queue: oss-gcp-small
+  - buildifier:
+      queue: oss-gcp-small
+  - delivery:
+      auto_deliver: true
+      rules:
+        - deliverable: 'attr("tags", "\bdeliverable\b", //...)'
+          condition:
+            branches:
+              - main
+        - deliverable:
+            - //docs:docs_delivery
+          condition:
+            only_on_change: false
+            branches:
+              - main
+  - warming:
+      queue: oss-gcp-warming
+notifications:
+  github: {}

.aspect/workflows/deps.bzl

@@ -0,0 +1,48 @@
+"""Bazel dependencies for Aspect Workflows"""
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", _http_archive = "http_archive", _http_file = "http_file")
+load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
+
+# TODO: move this to a rule set so repositories on Aspect Workflows can avoid this boilerplate
+rosetta_version = "5.11.0-rc0"
+rosetta_integrity = {
+    "darwin_aarch64": "sha256-poZcgwCiCQ+d4gGqT8uSLD+Lw+hHvgFco0HkRKWb/JE=",
+    "darwin_x86_64": "sha256-knu8ztUUCdn6wpCvEKntuuEVN0rI5jyC5h0VeR4WsbQ=",
+    "linux_aarch64": "sha256-M/cL1Tb38gUYYVMefSGNbyxtWdRuLQ9t+bKQnzp+kL4=",
+    "linux_x86_64": "sha256-LzMQGU5SzzGmnAaJjvSogjTl5PWXnTG8v9dHDRnEe8Q=",
+}
+
+# https://github.com/suzuki-shunsuke/circleci-config-merge/releases
+# https://dev.to/suzukishunsuke/splitting-circleci-config-yml-10gk
+circleci_config_merge_version = "1.1.6"
+circleci_config_merge_integrity = {
+    "darwin_aarch64": "sha256-7cQeLrSVRZR+mQu/njn+x//EIb2bhTV2+J8fafRHpr4=",
+    "darwin_x86_64": "sha256-vHKDSdDaYK58MaudJ9yOPRKh+OT/LiTQV/9E07RL8qA=",
+    "linux_aarch64": "sha256-MaXVQmRK9q9LgsfM5ZzxCIIT8rUcOBbzJ8aVDgK6zWs=",
+    "linux_x86_64": "sha256-3eYJn7dShZD1oiS3cgXfqXwdDzclf/N97A2nh7ZfW+w=",
+}
+
+def http_archive(name, **kwargs):
+    maybe(_http_archive, name = name, **kwargs)
+
+def http_file(name, **kwargs):
+    maybe(_http_file, name = name, **kwargs)
+
+# buildifier: disable=function-docstring
+def fetch_workflows_deps():
+    for platform_arch in rosetta_integrity.keys():
+        http_file(
+            name = "rosetta_{}".format(platform_arch),
+            downloaded_file_path = "rosetta",
+            executable = True,
+            # integrity = rosetta_integrity[platform_arch],
+            urls = ["https://static.aspect.build/aspect/{0}/rosetta_real_{1}".format(rosetta_version, platform_arch.replace("aarch64", "arm64"))],
+        )
+
+    for platform_arch in circleci_config_merge_integrity.keys():
+        http_archive(
+            name = "circleci_config_merge_{}".format(platform_arch),
+            build_file_content = "exports_files([\"circleci-config-merge\"])",
+            integrity = circleci_config_merge_integrity[platform_arch],
+            urls = ["https://github.com/suzuki-shunsuke/circleci-config-merge/releases/download/v{0}/circleci-config-merge_{0}_{1}.tar.gz".format(circleci_config_merge_version, platform_arch.replace("aarch64", "arm64").replace("x86_64", "amd64"))],
+        )

.bazelversion

@@ -1 +1 @@
-7.1.1
+7.3.1

.circleci/BUILD.bazel

@@ -0,0 +1,61 @@
+load("@aspect_bazel_lib//lib:write_source_files.bzl", "write_source_file")
+
+CIRCLECI_ORG = "aspect-build"
+
+CIRCLECI_USER_CONFIG_FILE = "//.circleci:user-config.yml"
+
+not_windows = select({
+    # There isn't a published rosetta binary for windows as of Feb 2024
+    "@platforms//os:windows": ["@platforms//:incompatible"],
+    "//conditions:default": [],
+})
+
+alias(
+    name = "rosetta",
+    actual = select({
+        "@bazel_tools//src/conditions:darwin_arm64": "@rosetta_darwin_aarch64//file:rosetta",
+        "@bazel_tools//src/conditions:darwin_x86_64": "@rosetta_darwin_x86_64//file:rosetta",
+        "@bazel_tools//src/conditions:linux_aarch64": "@rosetta_linux_aarch64//file:rosetta",
+        "@bazel_tools//src/conditions:linux_x86_64": "@rosetta_linux_x86_64//file:rosetta",
+    }),
+    target_compatible_with = not_windows,
+)
+
+alias(
+    name = "circleci-config-merge",
+    actual = select({
+        "@bazel_tools//src/conditions:darwin_arm64": "@circleci_config_merge_darwin_aarch64//:circleci-config-merge",
+        "@bazel_tools//src/conditions:darwin_x86_64": "@circleci_config_merge_darwin_x86_64//:circleci-config-merge",
+        "@bazel_tools//src/conditions:linux_aarch64": "@circleci_config_merge_linux_aarch64//:circleci-config-merge",
+        "@bazel_tools//src/conditions:linux_x86_64": "@circleci_config_merge_linux_x86_64//:circleci-config-merge",
+    }),
+    target_compatible_with = not_windows,
+)
+
+genrule(
+    name = "aspect_workflows_config",
+    srcs = ["//.aspect/workflows:config.yaml"],
+    outs = [":aspect-workflows-config.yml"],
+    cmd = "CI=1 CIRCLE_PROJECT_USERNAME={0} $(execpath :rosetta) steps --configuration .aspect/workflows/config.yaml --host circleci > $@".format(CIRCLECI_ORG),
+    target_compatible_with = not_windows,
+    tools = [":rosetta"],
+)
+
+genrule(
+    name = "merge_config",
+    srcs = [
+        ":aspect-workflows-config.yml",
+        CIRCLECI_USER_CONFIG_FILE,
+    ],
+    outs = [":_config.yml"],
+    cmd = "echo -e '# GENERATED FILE - DO NOT EDIT!\\n# Update with: bazel run //.circleci:write_merged_config' > $@ && $(execpath :circleci-config-merge) merge $(execpath :aspect-workflows-config.yml) $(execpath {0}) >> $@".format(CIRCLECI_USER_CONFIG_FILE),
+    target_compatible_with = not_windows,
+    tools = [":circleci-config-merge"],
+)
+
+write_source_file(
+    name = "write_merged_config",
+    in_file = ":_config.yml",
+    out_file = "config.yml",
+    target_compatible_with = not_windows,
+)