fix: bazel is green

.bazelignore

@@ -0,0 +1 @@
+.direnv

.envrc

@@ -0,0 +1 @@
+use flake

.github/workflows/BUILD.bazel

@@ -0,0 +1,3 @@
+package(default_visibility = ["//visibility:public"])
+
+exports_files(["ci.yml"])

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: CI
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+
+jobs:
+  test:
+    permissions:
+      contents: read
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-latest
+            phase8_target: linux-x64
+          - os: macos-14
+            phase8_target: darwin-arm64
+          - os: windows-latest
+            phase8_target: windows
+    runs-on: ${{ matrix.os }}
+    env:
+      USE_BAZEL_VERSION: 9.0.0
+    steps:
+      - uses: actions/checkout@v4
+      - uses: bazel-contrib/setup-bazel@0.15.0
+      - name: Run tests (${{ matrix.phase8_target }})
+        run: |
+          echo "Phase 8 target: ${{ matrix.phase8_target }}"
+          bazel test //tests/...

.github/workflows/copilot-setup-steps.yml

@@ -0,0 +1,45 @@
+name: "Copilot Setup Steps"
+
+# Automatically run the setup steps when they are changed to allow for easy validation, and
+# allow manual testing through the repository's "Actions" tab
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - .github/workflows/copilot-setup-steps.yml
+  pull_request:
+    paths:
+      - .github/workflows/copilot-setup-steps.yml
+
+jobs:
+  # The job MUST be called `copilot-setup-steps` or it will not be picked up by Copilot.
+  copilot-setup-steps:
+    runs-on: ubuntu-latest
+
+    # Set the permissions to the lowest permissions possible needed for your steps.
+    # Copilot will be given its own token for its operations.
+    permissions:
+      # If you want to clone the repository as part of your setup steps, for example to install dependencies, you'll need the `contents: read` permission.
+      # If you don't clone the repository in your setup steps, Copilot will do this for you automatically after the steps complete.
+      contents: read
+
+    # You can define any steps you want, and they will run before the agent starts.
+    # If you do not check out your code, Copilot will do this for you.
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@v31
+        with:
+          extra_nix_config: |
+            experimental-features = nix-command flakes
+
+      - name: Restore and save Nix store cache
+        uses: nix-community/cache-nix-action@v7
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          restore-prefixes-first-match: nix-${{ runner.os }}-
+
+      - name: Install flake dependencies
+        run: nix develop --accept-flake-config -c true

.gitignore

@@ -6,6 +6,12 @@
 # based on the name of the directory bazel is cloned into.
 /bazel-*
 
+.direnv/
+.pre-commit-config.yaml
+build/
+dist/
+node_modules/
+
 # Directories for the Bazel IntelliJ plugin containing the generated
 # IntelliJ project files and plugin configuration. Seperate directories are
 # for the IntelliJ, Android Studio and CLion versions of the plugin.

.gitleaks.toml

@@ -0,0 +1,45 @@
+# .gitleaks.toml
+title = "gitleaks config"
+
+[extend]
+# extend the default ruleset rather than replacing it
+useDefault = true
+
+[allowlist]
+description = "Global allowlist"
+paths = [
+  # lock files often contain hashes that trip up gitleaks
+  '''flake\.lock''',
+  '''package-lock\.json''',
+  '''yarn\.lock''',
+  '''bun\.lockb''',
+]
+regexes = [
+  # nix store hashes
+  '''/nix/store/[a-z0-9]{32}-''',
+]
+
+[[rules]]
+id = "generic-api-key-extended"
+description = "Extended generic API key detection"
+regex = '''(?i)(api[_-]?key|api[_-]?secret|access[_-]?token|auth[_-]?token)\s*[:=]\s*['"]?[a-zA-Z0-9_\-]{16,}['"]?'''
+entropy = 3.5
+tags = ["api", "key", "token"]
+
+[[rules]]
+id = "private-key-file"
+description = "Private key files"
+regex = '''-----BEGIN (RSA|EC|DSA|OPENSSH|PGP) PRIVATE KEY'''
+tags = ["key", "private"]
+
+[[rules]]
+id = "environment-file"
+description = "Committed .env files"
+path = '''(^|/)\.env(\.[a-z]+)?$'''
+regex = '''.+'''
+tags = ["env"]
+[rules.allowlist]
+  paths = [
+    # allow .env.example and .env.template
+    '''\.env\.(example|template|sample)$''',
+  ]

.gitlint

@@ -0,0 +1,8 @@
+[general]
+ignore=B6
+
+[title-max-length]
+line-length=72
+
+[title-match-regex]
+regex=^(feat|fix|chore|docs|refactor|test|ci)(\(.+\))?: .+

BUILD.bazel

@@ -0,0 +1 @@
+package(default_visibility = ["//visibility:public"])

MODULE.bazel

@@ -0,0 +1,25 @@
+module(
+    name = "rules_bun",
+    version = "0.1.0",
+)
+
+bazel_dep(name = "platforms", version = "1.0.0")
+bazel_dep(name = "rules_shell", version = "0.6.1")
+
+bun_ext = use_extension("//bun:extensions.bzl", "bun")
+use_repo(
+    bun_ext,
+    "bun_linux_x64",
+    "bun_linux_aarch64",
+    "bun_darwin_x64",
+    "bun_darwin_aarch64",
+    "bun_windows_x64",
+)
+
+register_toolchains(
+    "//bun:darwin_aarch64_toolchain",
+    "//bun:darwin_x64_toolchain",
+    "//bun:linux_aarch64_toolchain",
+    "//bun:linux_x64_toolchain",
+    "//bun:windows_x64_toolchain",
+)

MODULE.bazel.lock

@@ -0,0 +1,508 @@
+{
+  "lockFileVersion": 26,
+  "registryFileHashes": {
+    "https://bcr.bazel.build/bazel_registry.json": "8a28e4aff06ee60aed2a8c281907fb8bcbf3b753c91fb5a5c57da3215d5b3497",
+    "https://bcr.bazel.build/modules/abseil-cpp/20210324.2/MODULE.bazel": "7cd0312e064fde87c8d1cd79ba06c876bd23630c83466e9500321be55c96ace2",
+    "https://bcr.bazel.build/modules/abseil-cpp/20211102.0/MODULE.bazel": "70390338f7a5106231d20620712f7cccb659cd0e9d073d1991c038eb9fc57589",
+    "https://bcr.bazel.build/modules/abseil-cpp/20230125.1/MODULE.bazel": "89047429cb0207707b2dface14ba7f8df85273d484c2572755be4bab7ce9c3a0",
+    "https://bcr.bazel.build/modules/abseil-cpp/20230802.0.bcr.1/MODULE.bazel": "1c8cec495288dccd14fdae6e3f95f772c1c91857047a098fad772034264cc8cb",
+    "https://bcr.bazel.build/modules/abseil-cpp/20230802.0/MODULE.bazel": "d253ae36a8bd9ee3c5955384096ccb6baf16a1b1e93e858370da0a3b94f77c16",
+    "https://bcr.bazel.build/modules/abseil-cpp/20230802.1/MODULE.bazel": "fa92e2eb41a04df73cdabeec37107316f7e5272650f81d6cc096418fe647b915",
+    "https://bcr.bazel.build/modules/abseil-cpp/20240116.1/MODULE.bazel": "37bcdb4440fbb61df6a1c296ae01b327f19e9bb521f9b8e26ec854b6f97309ed",
+    "https://bcr.bazel.build/modules/abseil-cpp/20240116.2/MODULE.bazel": "73939767a4686cd9a520d16af5ab440071ed75cec1a876bf2fcfaf1f71987a16",
+    "https://bcr.bazel.build/modules/abseil-cpp/20250127.1/MODULE.bazel": "c4a89e7ceb9bf1e25cf84a9f830ff6b817b72874088bf5141b314726e46a57c1",
+    "https://bcr.bazel.build/modules/abseil-cpp/20250512.1/MODULE.bazel": "d209fdb6f36ffaf61c509fcc81b19e81b411a999a934a032e10cd009a0226215",
+    "https://bcr.bazel.build/modules/abseil-cpp/20250814.1/MODULE.bazel": "51f2312901470cdab0dbdf3b88c40cd21c62a7ed58a3de45b365ddc5b11bcab2",
+    "https://bcr.bazel.build/modules/abseil-cpp/20250814.1/source.json": "cea3901d7e299da7320700abbaafe57a65d039f10d0d7ea601c4a66938ea4b0c",
+    "https://bcr.bazel.build/modules/apple_support/1.11.1/MODULE.bazel": "1843d7cd8a58369a444fc6000e7304425fba600ff641592161d9f15b179fb896",
+    "https://bcr.bazel.build/modules/apple_support/1.15.1/MODULE.bazel": "a0556fefca0b1bb2de8567b8827518f94db6a6e7e7d632b4c48dc5f865bc7c85",
+    "https://bcr.bazel.build/modules/apple_support/1.21.0/MODULE.bazel": "ac1824ed5edf17dee2fdd4927ada30c9f8c3b520be1b5fd02a5da15bc10bff3e",
+    "https://bcr.bazel.build/modules/apple_support/1.21.1/MODULE.bazel": "5809fa3efab15d1f3c3c635af6974044bac8a4919c62238cce06acee8a8c11f1",
+    "https://bcr.bazel.build/modules/apple_support/1.24.2/MODULE.bazel": "0e62471818affb9f0b26f128831d5c40b074d32e6dda5a0d3852847215a41ca4",
+    "https://bcr.bazel.build/modules/apple_support/1.24.2/source.json": "2c22c9827093250406c5568da6c54e6fdf0ef06238def3d99c71b12feb057a8d",
+    "https://bcr.bazel.build/modules/bazel_features/1.1.1/MODULE.bazel": "27b8c79ef57efe08efccbd9dd6ef70d61b4798320b8d3c134fd571f78963dbcd",
+    "https://bcr.bazel.build/modules/bazel_features/1.10.0/MODULE.bazel": "f75e8807570484a99be90abcd52b5e1f390362c258bcb73106f4544957a48101",
+    "https://bcr.bazel.build/modules/bazel_features/1.11.0/MODULE.bazel": "f9382337dd5a474c3b7d334c2f83e50b6eaedc284253334cf823044a26de03e8",
+    "https://bcr.bazel.build/modules/bazel_features/1.15.0/MODULE.bazel": "d38ff6e517149dc509406aca0db3ad1efdd890a85e049585b7234d04238e2a4d",
+    "https://bcr.bazel.build/modules/bazel_features/1.17.0/MODULE.bazel": "039de32d21b816b47bd42c778e0454217e9c9caac4a3cf8e15c7231ee3ddee4d",
+    "https://bcr.bazel.build/modules/bazel_features/1.18.0/MODULE.bazel": "1be0ae2557ab3a72a57aeb31b29be347bcdc5d2b1eb1e70f39e3851a7e97041a",
+    "https://bcr.bazel.build/modules/bazel_features/1.19.0/MODULE.bazel": "59adcdf28230d220f0067b1f435b8537dd033bfff8db21335ef9217919c7fb58",
+    "https://bcr.bazel.build/modules/bazel_features/1.21.0/MODULE.bazel": "675642261665d8eea09989aa3b8afb5c37627f1be178382c320d1b46afba5e3b",
+    "https://bcr.bazel.build/modules/bazel_features/1.23.0/MODULE.bazel": "fd1ac84bc4e97a5a0816b7fd7d4d4f6d837b0047cf4cbd81652d616af3a6591a",
+    "https://bcr.bazel.build/modules/bazel_features/1.27.0/MODULE.bazel": "621eeee06c4458a9121d1f104efb80f39d34deff4984e778359c60eaf1a8cb65",
+    "https://bcr.bazel.build/modules/bazel_features/1.28.0/MODULE.bazel": "4b4200e6cbf8fa335b2c3f43e1d6ef3e240319c33d43d60cc0fbd4b87ece299d",
+    "https://bcr.bazel.build/modules/bazel_features/1.3.0/MODULE.bazel": "cdcafe83ec318cda34e02948e81d790aab8df7a929cec6f6969f13a489ccecd9",
+    "https://bcr.bazel.build/modules/bazel_features/1.30.0/MODULE.bazel": "a14b62d05969a293b80257e72e597c2da7f717e1e69fa8b339703ed6731bec87",
+    "https://bcr.bazel.build/modules/bazel_features/1.33.0/MODULE.bazel": "8b8dc9d2a4c88609409c3191165bccec0e4cb044cd7a72ccbe826583303459f6",
+    "https://bcr.bazel.build/modules/bazel_features/1.33.0/source.json": "13617db3930328c2cd2807a0f13d52ca870ac05f96db9668655113265147b2a6",
+    "https://bcr.bazel.build/modules/bazel_features/1.4.1/MODULE.bazel": "e45b6bb2350aff3e442ae1111c555e27eac1d915e77775f6fdc4b351b758b5d7",
+    "https://bcr.bazel.build/modules/bazel_features/1.9.1/MODULE.bazel": "8f679097876a9b609ad1f60249c49d68bfab783dd9be012faf9d82547b14815a",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.0.3/MODULE.bazel": "bcb0fd896384802d1ad283b4e4eb4d718eebd8cb820b0a2c3a347fb971afd9d8",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.1.1/MODULE.bazel": "1add3e7d93ff2e6998f9e118022c84d163917d912f5afafb3058e3d2f1545b5e",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.2.0/MODULE.bazel": "44fe84260e454ed94ad326352a698422dbe372b21a1ac9f3eab76eb531223686",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.2.1/MODULE.bazel": "f35baf9da0efe45fa3da1696ae906eea3d615ad41e2e3def4aeb4e8bc0ef9a7a",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.3.0/MODULE.bazel": "20228b92868bf5cfc41bda7afc8a8ba2a543201851de39d990ec957b513579c5",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.4.1/MODULE.bazel": "a0dcb779424be33100dcae821e9e27e4f2901d9dfd5333efe5ac6a8d7ab75e1d",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.4.2/MODULE.bazel": "3bd40978e7a1fac911d5989e6b09d8f64921865a45822d8b09e815eaa726a651",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.5.0/MODULE.bazel": "32880f5e2945ce6a03d1fbd588e9198c0a959bb42297b2cfaf1685b7bc32e138",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.6.1/MODULE.bazel": "8fdee2dbaace6c252131c00e1de4b165dc65af02ea278476187765e1a617b917",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.7.0/MODULE.bazel": "0db596f4563de7938de764cc8deeabec291f55e8ec15299718b93c4423e9796d",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.7.1/MODULE.bazel": "3120d80c5861aa616222ec015332e5f8d3171e062e3e804a2a0253e1be26e59b",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.8.1/MODULE.bazel": "88ade7293becda963e0e3ea33e7d54d3425127e0a326e0d17da085a5f1f03ff6",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.8.2/MODULE.bazel": "69ad6927098316848b34a9142bcc975e018ba27f08c4ff403f50c1b6e646ca67",
+    "https://bcr.bazel.build/modules/bazel_skylib/1.8.2/source.json": "34a3c8bcf233b835eb74be9d628899bb32999d3e0eadef1947a0a562a2b16ffb",
+    "https://bcr.bazel.build/modules/buildozer/8.2.1/MODULE.bazel": "61e9433c574c2bd9519cad7fa66b9c1d2b8e8d5f3ae5d6528a2c2d26e68d874d",
+    "https://bcr.bazel.build/modules/buildozer/8.2.1/source.json": "7c33f6a26ee0216f85544b4bca5e9044579e0219b6898dd653f5fb449cf2e484",
+    "https://bcr.bazel.build/modules/google_benchmark/1.8.2/MODULE.bazel": "a70cf1bba851000ba93b58ae2f6d76490a9feb74192e57ab8e8ff13c34ec50cb",
+    "https://bcr.bazel.build/modules/googletest/1.11.0/MODULE.bazel": "3a83f095183f66345ca86aa13c58b59f9f94a2f81999c093d4eeaa2d262d12f4",
+    "https://bcr.bazel.build/modules/googletest/1.14.0.bcr.1/MODULE.bazel": "22c31a561553727960057361aa33bf20fb2e98584bc4fec007906e27053f80c6",
+    "https://bcr.bazel.build/modules/googletest/1.14.0/MODULE.bazel": "cfbcbf3e6eac06ef9d85900f64424708cc08687d1b527f0ef65aa7517af8118f",
+    "https://bcr.bazel.build/modules/googletest/1.15.2/MODULE.bazel": "6de1edc1d26cafb0ea1a6ab3f4d4192d91a312fd2d360b63adaa213cd00b2108",
+    "https://bcr.bazel.build/modules/googletest/1.17.0/MODULE.bazel": "dbec758171594a705933a29fcf69293d2468c49ec1f2ebca65c36f504d72df46",
+    "https://bcr.bazel.build/modules/googletest/1.17.0/source.json": "38e4454b25fc30f15439c0378e57909ab1fd0a443158aa35aec685da727cd713",
+    "https://bcr.bazel.build/modules/jsoncpp/1.9.5/MODULE.bazel": "31271aedc59e815656f5736f282bb7509a97c7ecb43e927ac1a37966e0578075",
+    "https://bcr.bazel.build/modules/jsoncpp/1.9.6/MODULE.bazel": "2f8d20d3b7d54143213c4dfc3d98225c42de7d666011528dc8fe91591e2e17b0",
+    "https://bcr.bazel.build/modules/jsoncpp/1.9.6/source.json": "a04756d367a2126c3541682864ecec52f92cdee80a35735a3cb249ce015ca000",
+    "https://bcr.bazel.build/modules/libpfm/4.11.0/MODULE.bazel": "45061ff025b301940f1e30d2c16bea596c25b176c8b6b3087e92615adbd52902",
+    "https://bcr.bazel.build/modules/nlohmann_json/3.6.1/MODULE.bazel": "6f7b417dcc794d9add9e556673ad25cb3ba835224290f4f848f8e2db1e1fca74",
+    "https://bcr.bazel.build/modules/nlohmann_json/3.6.1/source.json": "f448c6e8963fdfa7eb831457df83ad63d3d6355018f6574fb017e8169deb43a9",
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+    "https://bcr.bazel.build/modules/platforms/0.0.11/MODULE.bazel": "0daefc49732e227caa8bfa834d65dc52e8cc18a2faf80df25e8caea151a9413f",
+    "https://bcr.bazel.build/modules/platforms/0.0.4/MODULE.bazel": "9b328e31ee156f53f3c416a64f8491f7eb731742655a47c9eec4703a71644aee",
+    "https://bcr.bazel.build/modules/platforms/0.0.5/MODULE.bazel": "5733b54ea419d5eaf7997054bb55f6a1d0b5ff8aedf0176fef9eea44f3acda37",
+    "https://bcr.bazel.build/modules/platforms/0.0.6/MODULE.bazel": "ad6eeef431dc52aefd2d77ed20a4b353f8ebf0f4ecdd26a807d2da5aa8cd0615",
+    "https://bcr.bazel.build/modules/platforms/0.0.7/MODULE.bazel": "72fd4a0ede9ee5c021f6a8dd92b503e089f46c227ba2813ff183b71616034814",
+    "https://bcr.bazel.build/modules/platforms/0.0.8/MODULE.bazel": "9f142c03e348f6d263719f5074b21ef3adf0b139ee4c5133e2aa35664da9eb2d",
+    "https://bcr.bazel.build/modules/platforms/0.0.9/MODULE.bazel": "4a87a60c927b56ddd67db50c89acaa62f4ce2a1d2149ccb63ffd871d5ce29ebc",
+    "https://bcr.bazel.build/modules/platforms/1.0.0/MODULE.bazel": "f05feb42b48f1b3c225e4ccf351f367be0371411a803198ec34a389fb22aa580",
+    "https://bcr.bazel.build/modules/platforms/1.0.0/source.json": "f4ff1fd412e0246fd38c82328eb209130ead81d62dcd5a9e40910f867f733d96",
+    "https://bcr.bazel.build/modules/protobuf/21.7/MODULE.bazel": "a5a29bb89544f9b97edce05642fac225a808b5b7be74038ea3640fae2f8e66a7",
+    "https://bcr.bazel.build/modules/protobuf/27.0/MODULE.bazel": "7873b60be88844a0a1d8f80b9d5d20cfbd8495a689b8763e76c6372998d3f64c",
+    "https://bcr.bazel.build/modules/protobuf/29.0-rc2/MODULE.bazel": "6241d35983510143049943fc0d57937937122baf1b287862f9dc8590fc4c37df",
+    "https://bcr.bazel.build/modules/protobuf/29.0-rc3/MODULE.bazel": "33c2dfa286578573afc55a7acaea3cada4122b9631007c594bf0729f41c8de92",
+    "https://bcr.bazel.build/modules/protobuf/29.1/MODULE.bazel": "557c3457560ff49e122ed76c0bc3397a64af9574691cb8201b4e46d4ab2ecb95",
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+              "url": "https://files.pythonhosted.org/packages/97/75/10a9ebee3fd790d20926a90a2547f0bf78f371b2f13aa822c759680ca7b9/tomli-2.0.1-py3-none-any.whl",
+              "sha256": "939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc",
+              "type": "zip",
+              "build_file_content": "package(default_visibility = [\"//visibility:public\"])\n\nload(\"@rules_python//python:py_library.bzl\", \"py_library\")\n\npy_library(\n    name = \"lib\",\n    srcs = glob([\"**/*.py\"]),\n    data = glob([\"**/*\"], exclude=[\n        # These entries include those put into user-installed dependencies by\n        # data_exclude to avoid non-determinism.\n        \"**/*.py\",\n        \"**/*.pyc\",\n        \"**/*.pyc.*\",  # During pyc creation, temp files named *.pyc.NNN are created\n        \"**/*.dist-info/RECORD\",\n        \"BUILD\",\n        \"WORKSPACE\",\n    ]),\n    # This makes this directory a top-level in the python import\n    # search path for anything that depends on this.\n    imports = [\".\"],\n)\n"
+            }
+          },
+          "pypi__wheel": {
+            "repoRuleId": "@@bazel_tools//tools/build_defs/repo:http.bzl%http_archive",
+            "attributes": {
+              "url": "https://files.pythonhosted.org/packages/7d/cd/d7460c9a869b16c3dd4e1e403cce337df165368c71d6af229a74699622ce/wheel-0.43.0-py3-none-any.whl",
+              "sha256": "55c570405f142630c6b9f72fe09d9b67cf1477fcf543ae5b8dcb1f5b7377da81",
+              "type": "zip",
+              "build_file_content": "package(default_visibility = [\"//visibility:public\"])\n\nload(\"@rules_python//python:py_library.bzl\", \"py_library\")\n\npy_library(\n    name = \"lib\",\n    srcs = glob([\"**/*.py\"]),\n    data = glob([\"**/*\"], exclude=[\n        # These entries include those put into user-installed dependencies by\n        # data_exclude to avoid non-determinism.\n        \"**/*.py\",\n        \"**/*.pyc\",\n        \"**/*.pyc.*\",  # During pyc creation, temp files named *.pyc.NNN are created\n        \"**/*.dist-info/RECORD\",\n        \"BUILD\",\n        \"WORKSPACE\",\n    ]),\n    # This makes this directory a top-level in the python import\n    # search path for anything that depends on this.\n    imports = [\".\"],\n)\n"
+            }
+          },
+          "pypi__zipp": {
+            "repoRuleId": "@@bazel_tools//tools/build_defs/repo:http.bzl%http_archive",
+            "attributes": {
+              "url": "https://files.pythonhosted.org/packages/da/55/a03fd7240714916507e1fcf7ae355bd9d9ed2e6db492595f1a67f61681be/zipp-3.18.2-py3-none-any.whl",
+              "sha256": "dce197b859eb796242b0622af1b8beb0a722d52aa2f57133ead08edd5bf5374e",
+              "type": "zip",
+              "build_file_content": "package(default_visibility = [\"//visibility:public\"])\n\nload(\"@rules_python//python:py_library.bzl\", \"py_library\")\n\npy_library(\n    name = \"lib\",\n    srcs = glob([\"**/*.py\"]),\n    data = glob([\"**/*\"], exclude=[\n        # These entries include those put into user-installed dependencies by\n        # data_exclude to avoid non-determinism.\n        \"**/*.py\",\n        \"**/*.pyc\",\n        \"**/*.pyc.*\",  # During pyc creation, temp files named *.pyc.NNN are created\n        \"**/*.dist-info/RECORD\",\n        \"BUILD\",\n        \"WORKSPACE\",\n    ]),\n    # This makes this directory a top-level in the python import\n    # search path for anything that depends on this.\n    imports = [\".\"],\n)\n"
+            }
+          }
+        }
+      }
+    },
+    "@@rules_python+//python/uv:uv.bzl%uv": {
+      "general": {
+        "bzlTransitiveDigest": "ijW9KS7qsIY+yBVvJ+Nr1mzwQox09j13DnE3iIwaeTM=",
+        "usagesDigest": "H8dQoNZcoqP+Mu0tHZTi4KHATzvNkM5ePuEqoQdklIU=",
+        "recordedInputs": [
+          "REPO_MAPPING:rules_python+,bazel_tools bazel_tools",
+          "REPO_MAPPING:rules_python+,platforms platforms"
+        ],
+        "generatedRepoSpecs": {
+          "uv": {
+            "repoRuleId": "@@rules_python+//python/uv/private:uv_toolchains_repo.bzl%uv_toolchains_repo",
+            "attributes": {
+              "toolchain_type": "'@@rules_python+//python/uv:uv_toolchain_type'",
+              "toolchain_names": [
+                "none"
+              ],
+              "toolchain_implementations": {
+                "none": "'@@rules_python+//python:none'"
+              },
+              "toolchain_compatible_with": {
+                "none": [
+                  "@platforms//:incompatible"
+                ]
+              },
+              "toolchain_target_settings": {}
+            }
+          }
+        }
+      }
+    }
+  },
+  "facts": {}
+}

README.md

@@ -1,3 +1,53 @@
 # rules_bun
 
-Bazel rules for bun
+Bazel rules for bun.
+
+## Current status
+
+Phase 1 bootstrap is in place:
+
+- Bun toolchain rule and provider (`/bun/toolchain.bzl`)
+- Platform-specific Bun repository downloads (`/bun/repositories.bzl`)
+- Toolchain declarations and registration targets (`/bun/BUILD.bazel`)
+- Smoke test for `bun --version` (`//tests/toolchain_test:bun_version_test`)
+
+Phase 2 bootstrap is in place:
+
+- Repository-rule based `bun_install` (`/internal/bun_install.bzl`)
+- Public export via `bun/defs.bzl`
+- Focused install behavior tests (`//tests/install_test:all`)
+
+Phase 3 bootstrap is in place:
+
+- Executable `bun_binary` rule (`/internal/bun_binary.bzl`)
+- Public export via `bun/defs.bzl`
+- Focused JS/TS runnable tests (`//tests/binary_test:all`)
+
+Phase 4 bootstrap is in place:
+
+- Test rule `bun_test` (`/internal/bun_test.bzl`)
+- Public export via `bun/defs.bzl`
+- Focused passing/failing test targets (`//tests/bun_test_test:all`)
+
+Phase 5 bootstrap is in place:
+
+- Bundle rule `bun_bundle` (`/internal/bun_bundle.bzl`)
+- Public export via `bun/defs.bzl`
+- Focused output/minify tests (`//tests/bundle_test:all`)
+
+Phase 6 bootstrap is in place:
+
+- Source grouping rules `js_library` / `ts_library` (`/internal/js_library.bzl`)
+- Transitive `deps` propagation wired into `bun_bundle` and `bun_test`
+- Focused dependency-propagation tests (`//tests/library_test:all`)
+
+Phase 7 bootstrap is in place:
+
+- Bzlmod `bun_install` module extension (`/bun/extensions.bzl`) using Bazel 9-compatible extension/tag syntax
+- Focused module-extension shape test (`//tests/install_extension_test:all`)
+
+Phase 8 bootstrap is in place:
+
+- CI matrix workflow for linux-x64, darwin-arm64, and windows (`/.github/workflows/ci.yml`)
+- Bazel 9 pin in CI via `USE_BAZEL_VERSION=9.0.0`
+- Focused CI matrix shape test (`//tests/ci_test:all`)

VERSION

@@ -0,0 +1,3 @@
+0.0.2
+stable
+0

WORKSPACE

@@ -0,0 +1,5 @@
+workspace(name = "rules_bun")
+
+load("//bun:repositories.bzl", "bun_register_toolchains")
+
+bun_register_toolchains()

bun/BUILD.bazel

@@ -0,0 +1,109 @@
+load(":toolchain.bzl", "bun_toolchain")
+load(":version.bzl", "BUN_VERSION")
+
+exports_files([
+    "defs.bzl",
+    "extensions.bzl",
+])
+
+toolchain_type(name = "toolchain_type")
+
+bun_toolchain(
+    name = "linux_x64_toolchain_impl",
+    bun = "@bun_linux_x64//:bun",
+    version = BUN_VERSION,
+)
+
+bun_toolchain(
+    name = "linux_aarch64_toolchain_impl",
+    bun = "@bun_linux_aarch64//:bun",
+    version = BUN_VERSION,
+)
+
+bun_toolchain(
+    name = "darwin_x64_toolchain_impl",
+    bun = "@bun_darwin_x64//:bun",
+    version = BUN_VERSION,
+)
+
+bun_toolchain(
+    name = "darwin_aarch64_toolchain_impl",
+    bun = "@bun_darwin_aarch64//:bun",
+    version = BUN_VERSION,
+)
+
+bun_toolchain(
+    name = "windows_x64_toolchain_impl",
+    bun = "@bun_windows_x64//:bun",
+    version = BUN_VERSION,
+)
+
+toolchain(
+    name = "linux_x64_toolchain",
+    exec_compatible_with = [
+        "@platforms//cpu:x86_64",
+        "@platforms//os:linux",
+    ],
+    target_compatible_with = [
+        "@platforms//cpu:x86_64",
+        "@platforms//os:linux",
+    ],
+    toolchain = ":linux_x64_toolchain_impl",
+    toolchain_type = ":toolchain_type",
+)
+
+toolchain(
+    name = "linux_aarch64_toolchain",
+    exec_compatible_with = [
+        "@platforms//cpu:arm64",
+        "@platforms//os:linux",
+    ],
+    target_compatible_with = [
+        "@platforms//cpu:arm64",
+        "@platforms//os:linux",
+    ],
+    toolchain = ":linux_aarch64_toolchain_impl",
+    toolchain_type = ":toolchain_type",
+)
+
+toolchain(
+    name = "darwin_x64_toolchain",
+    exec_compatible_with = [
+        "@platforms//cpu:x86_64",
+        "@platforms//os:macos",
+    ],
+    target_compatible_with = [
+        "@platforms//cpu:x86_64",
+        "@platforms//os:macos",
+    ],
+    toolchain = ":darwin_x64_toolchain_impl",
+    toolchain_type = ":toolchain_type",
+)
+
+toolchain(
+    name = "darwin_aarch64_toolchain",
+    exec_compatible_with = [
+        "@platforms//cpu:arm64",
+        "@platforms//os:macos",
+    ],
+    target_compatible_with = [
+        "@platforms//cpu:arm64",
+        "@platforms//os:macos",
+    ],
+    toolchain = ":darwin_aarch64_toolchain_impl",
+    toolchain_type = ":toolchain_type",
+)
+
+toolchain(
+    name = "windows_x64_toolchain",
+    exec_compatible_with = [
+        "@platforms//cpu:x86_64",
+        "@platforms//os:windows",
+    ],
+    target_compatible_with = [
+        "@platforms//cpu:x86_64",
+        "@platforms//os:windows",
+    ],
+    toolchain = ":windows_x64_toolchain_impl",
+    toolchain_type = ":toolchain_type",
+)

bun/defs.bzl

@@ -0,0 +1,15 @@
+load("//internal:bun_binary.bzl", _bun_binary = "bun_binary")
+load("//internal:bun_bundle.bzl", _bun_bundle = "bun_bundle")
+load("//internal:bun_test.bzl", _bun_test = "bun_test")
+load("//internal:js_library.bzl", _js_library = "js_library", _ts_library = "ts_library")
+load(":toolchain.bzl", _BunToolchainInfo = "BunToolchainInfo", _bun_toolchain = "bun_toolchain")
+
+visibility("public")
+
+bun_binary = _bun_binary
+bun_bundle = _bun_bundle
+bun_test = _bun_test
+js_library = _js_library
+ts_library = _ts_library
+BunToolchainInfo = _BunToolchainInfo
+bun_toolchain = _bun_toolchain

bun/extensions.bzl

@@ -0,0 +1,80 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+load("//internal:bun_install.bzl", "bun_install_repository")
+load(":version.bzl", "BUN_VERSION")
+
+_BUN_ARCHIVES = {
+    "bun_linux_x64": {
+        "sha256": "f57bc0187e39623de716ba3a389fda5486b2d7be7131a980ba54dc7b733d2e08",
+        "asset": "bun-linux-x64.zip",
+        "binary": "bun-linux-x64/bun",
+    },
+    "bun_linux_aarch64": {
+        "sha256": "fa5ecb25cafa8e8f5c87a0f833719d46dd0af0a86c7837d806531212d55636d3",
+        "asset": "bun-linux-aarch64.zip",
+        "binary": "bun-linux-aarch64/bun",
+    },
+    "bun_darwin_x64": {
+        "sha256": "c1d90bf6140f20e572c473065dc6b37a4b036349b5e9e4133779cc642ad94323",
+        "asset": "bun-darwin-x64.zip",
+        "binary": "bun-darwin-x64/bun",
+    },
+    "bun_darwin_aarch64": {
+        "sha256": "82034e87c9d9b4398ea619aee2eed5d2a68c8157e9a6ae2d1052d84d533ccd8d",
+        "asset": "bun-darwin-aarch64.zip",
+        "binary": "bun-darwin-aarch64/bun",
+    },
+    "bun_windows_x64": {
+        "sha256": "7a77b3e245e2e26965c93089a4a1332e8a326d3364c89fae1d1fd99cdd3cd73d",
+        "asset": "bun-windows-x64.zip",
+        "binary": "bun-windows-x64/bun.exe",
+    },
+}
+
+_BUN_GITHUB_RELEASE_URL_TEMPLATE = "https://github.com/oven-sh/bun/releases/download/bun-v{}/{}"
+
+
+def _bun_repos_impl(_ctx):
+    for name, metadata in _BUN_ARCHIVES.items():
+        http_archive(
+            name = name,
+            urls = [_BUN_GITHUB_RELEASE_URL_TEMPLATE.format(BUN_VERSION, metadata["asset"])],
+            sha256 = metadata["sha256"],
+            build_file_content = """
+exports_files(["{binary}"])
+
+filegroup(
+    name = "bun",
+    srcs = ["{binary}"],
+    visibility = ["//visibility:public"],
+)
+""".format(binary = metadata["binary"]),
+        )
+
+
+bun = module_extension(
+    implementation = _bun_repos_impl,
+)
+
+_install = tag_class(
+    attrs = {
+        "name": attr.string(mandatory = True),
+        "package_json": attr.string(mandatory = True),
+        "bun_lockfile": attr.string(mandatory = True),
+    },
+)
+
+
+def _bun_install_impl(ctx):
+    for mod in ctx.modules:
+        for install in mod.tags.install:
+            bun_install_repository(
+                name = install.name,
+                package_json = install.package_json,
+                bun_lockfile = install.bun_lockfile,
+            )
+
+
+bun_install = module_extension(
+    implementation = _bun_install_impl,
+    tag_classes = {"install": _install},
+)

bun/repositories.bzl

@@ -0,0 +1,74 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+load(":version.bzl", "BUN_VERSION")
+
+_BUN_ARCHIVES = {
+    "bun_linux_x64": {
+        "sha256": "f57bc0187e39623de716ba3a389fda5486b2d7be7131a980ba54dc7b733d2e08",
+        "asset": "bun-linux-x64.zip",
+        "binary": "bun-linux-x64/bun",
+    },
+    "bun_linux_aarch64": {
+        "sha256": "fa5ecb25cafa8e8f5c87a0f833719d46dd0af0a86c7837d806531212d55636d3",
+        "asset": "bun-linux-aarch64.zip",
+        "binary": "bun-linux-aarch64/bun",
+    },
+    "bun_darwin_x64": {
+        "sha256": "c1d90bf6140f20e572c473065dc6b37a4b036349b5e9e4133779cc642ad94323",
+        "asset": "bun-darwin-x64.zip",
+        "binary": "bun-darwin-x64/bun",
+    },
+    "bun_darwin_aarch64": {
+        "sha256": "82034e87c9d9b4398ea619aee2eed5d2a68c8157e9a6ae2d1052d84d533ccd8d",
+        "asset": "bun-darwin-aarch64.zip",
+        "binary": "bun-darwin-aarch64/bun",
+    },
+    "bun_windows_x64": {
+        "sha256": "7a77b3e245e2e26965c93089a4a1332e8a326d3364c89fae1d1fd99cdd3cd73d",
+        "asset": "bun-windows-x64.zip",
+        "binary": "bun-windows-x64/bun.exe",
+    },
+}
+
+_BUN_GITHUB_RELEASE_URL_TEMPLATE = "https://github.com/oven-sh/bun/releases/download/bun-v{}/{}"
+
+
+def _declare_bun_repo(name, asset, sha256, binary, version):
+    if native.existing_rule(name):
+        return
+
+    http_archive(
+        name = name,
+        urls = [_BUN_GITHUB_RELEASE_URL_TEMPLATE.format(version, asset)],
+        sha256 = sha256,
+        build_file_content = """
+exports_files(["{binary}"])
+
+filegroup(
+    name = "bun",
+    srcs = ["{binary}"],
+    visibility = ["//visibility:public"],
+)
+""".format(binary = binary),
+    )
+
+
+def bun_repositories(version = BUN_VERSION):
+    for name, metadata in _BUN_ARCHIVES.items():
+        _declare_bun_repo(
+            name = name,
+            asset = metadata["asset"],
+            sha256 = metadata["sha256"],
+            binary = metadata["binary"],
+            version = version,
+        )
+
+
+def bun_register_toolchains(name = "bun", version = BUN_VERSION):
+    bun_repositories(version = version)
+    native.register_toolchains(
+        "//bun:darwin_aarch64_toolchain",
+        "//bun:darwin_x64_toolchain",
+        "//bun:linux_aarch64_toolchain",
+        "//bun:linux_x64_toolchain",
+        "//bun:windows_x64_toolchain",
+    )

bun/toolchain.bzl

@@ -0,0 +1,21 @@
+BunToolchainInfo = provider(fields = ["bun_bin", "version"])
+
+
+def _bun_toolchain_impl(ctx):
+    return [
+        platform_common.ToolchainInfo(
+            bun = BunToolchainInfo(
+                bun_bin = ctx.executable.bun,
+                version = ctx.attr.version,
+            ),
+        ),
+    ]
+
+
+bun_toolchain = rule(
+    implementation = _bun_toolchain_impl,
+    attrs = {
+        "bun": attr.label(allow_single_file = True, executable = True, cfg = "exec"),
+        "version": attr.string(mandatory = True),
+    },
+)

bun/version.bzl

@@ -0,0 +1 @@
+BUN_VERSION = "1.3.10"

examples/basic/BUILD.bazel

@@ -0,0 +1,5 @@
+package(default_visibility = ["//visibility:public"])
+
+exports_files([
+	"README.md",
+])

examples/basic/README.md

@@ -0,0 +1,3 @@
+# basic example
+
+Placeholder for end-to-end bun rules example.

flake.lock

@@ -0,0 +1,159 @@
+{
+  "nodes": {
+    "devshell-lib": {
+      "inputs": {
+        "git-hooks": "git-hooks",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "treefmt-nix": "treefmt-nix"
+      },
+      "locked": {
+        "lastModified": 1772613315,
+        "narHash": "sha256-RlPTOsyfVwuwEzvaMpwS+giOqQa6KQXMuSHyh1bctjk=",
+        "ref": "v1.0.5",
+        "rev": "e445e49baf8b44b385108cd4f26a14d8ccf9fd35",
+        "revCount": 35,
+        "type": "git",
+        "url": "https://git.dgren.dev/eric/nix-flake-lib"
+      },
+      "original": {
+        "ref": "v1.0.5",
+        "type": "git",
+        "url": "https://git.dgren.dev/eric/nix-flake-lib"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1767039857,
+        "narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "git-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1772024342,
+        "narHash": "sha256-+eXlIc4/7dE6EcPs9a2DaSY3fTA9AE526hGqkNID3Wg=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "6e34e97ed9788b17796ee43ccdbaf871a5c2b476",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "devshell-lib",
+          "git-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1770073757,
+        "narHash": "sha256-Vy+G+F+3E/Tl+GMNgiHl9Pah2DgShmIUBJXmbiQPHbI=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "47472570b1e607482890801aeaf29bfb749884f6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1770107345,
+        "narHash": "sha256-tbS0Ebx2PiA1FRW8mt8oejR0qMXmziJmPaU1d4kYY9g=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "4533d9293756b63904b7238acb84ac8fe4c8c2c4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1772542754,
+        "narHash": "sha256-WGV2hy+VIeQsYXpsLjdr4GvHv5eECMISX1zKLTedhdg=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "8c809a146a140c5c8806f13399592dbcb1bb5dc4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devshell-lib": "devshell-lib",
+        "nixpkgs": "nixpkgs_3"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1770228511,
+        "narHash": "sha256-wQ6NJSuFqAEmIg2VMnLdCnUc0b7vslUohqqGGD+Fyxk=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "337a4fe074be1042a35086f15481d763b8ddc0e7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,143 @@
+{
+  description = "rules_bun development flake";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    devshell-lib.url = "git+https://git.dgren.dev/eric/nix-flake-lib?ref=v1.0.5";
+    devshell-lib.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      devshell-lib,
+      ...
+    }:
+    let
+      supportedSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+    in
+    {
+      devShells = forAllSystems (
+        system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+          bazel9 = pkgs.writeShellScriptBin "bazel" ''
+            export USE_BAZEL_VERSION="''${USE_BAZEL_VERSION:-9.0.0}"
+            exec ${pkgs.bazelisk}/bin/bazelisk "$@"
+          '';
+          env = devshell-lib.lib.mkDevShell {
+            inherit system;
+
+            extraPackages = with pkgs; [
+              go
+              gopls
+              gotools
+              bun
+              bazel9
+              bazel-buildtools
+              self.packages.${system}.release
+            ];
+
+            features = {
+              oxfmt = true;
+            };
+
+            formatters = {
+              shfmt.enable = true;
+            };
+
+            formatterSettings = {
+              shfmt.options = [
+                "-i"
+                "2"
+                "-s"
+                "-w"
+              ];
+            };
+
+            additionalHooks = {
+              tests = {
+                enable = true;
+                entry = "echo 'No tests defined yet.'";
+                pass_filenames = false;
+                stages = [ "pre-push" ];
+              };
+            };
+
+            tools = [
+              {
+                name = "Bun";
+                bin = "${pkgs.bun}/bin/bun";
+                versionCmd = "--version";
+                color = "YELLOW";
+              }
+              {
+                name = "Go";
+                bin = "${pkgs.go}/bin/go";
+                versionCmd = "version";
+                color = "CYAN";
+              }
+              {
+                name = "Bazel";
+                bin = "${bazel9}/bin/bazel";
+                versionCmd = "--version";
+                color = "GREEN";
+              }
+            ];
+
+            extraShellHook = ''
+              export USE_BAZEL_VERSION="''${USE_BAZEL_VERSION:-9.0.0}"
+              export BUN_INSTALL="''${BUN_INSTALL:-$HOME/.bun}"
+              export PATH="$BUN_INSTALL/bin:$PATH"
+            '';
+          };
+        in
+        {
+          default = env.shell;
+        }
+      );
+
+      checks = forAllSystems (
+        system:
+        let
+          env = devshell-lib.lib.mkDevShell { inherit system; };
+        in
+        {
+          inherit (env) pre-commit-check;
+        }
+      );
+
+      formatter = forAllSystems (system: (devshell-lib.lib.mkDevShell { inherit system; }).formatter);
+
+      # Optional: release command (`release`)
+      #
+      # The release script always updates VERSION first, then:
+      #   1) runs release steps in order (file writes and scripts)
+      #   2) runs postVersion hook
+      #   3) formats, stages, commits, tags, and pushes
+      #
+      # Runtime env vars available in release.run/postVersion:
+      #   BASE_VERSION, CHANNEL, PRERELEASE_NUM, FULL_VERSION, FULL_TAG
+      #
+      packages = forAllSystems (system: {
+        release = devshell-lib.lib.mkRelease {
+          inherit system;
+
+          release = [ ];
+
+          postVersion = ''
+            echo "Released $FULL_TAG"
+          '';
+        };
+      });
+
+    };
+
+}

implementation_plan.md

@@ -0,0 +1,280 @@
+Here's a comprehensive plan for implementing a Bazel-native `bun_rules` package:
+
+---
+
+## `bun_rules`: Bazel-Native Bun Implementation Plan
+
+### What Is This?
+
+A Bazel ruleset that integrates the [Bun](https://bun.sh) JavaScript runtime natively — similar to `rules_nodejs` but leveraging Bun's bundler, test runner, package manager, and runtime. The goal is hermetic, reproducible builds using Bun as the toolchain.
+
+---
+
+## Phase 1: Repository Skeleton & Toolchain
+
+**Where to start.** Every Bazel ruleset begins with the toolchain — nothing else works without it.
+
+### 1.1 Repo Structure
+
+```
+bun_rules/
+├── MODULE.bazel             # Bzlmod module definition
+├── WORKSPACE                # Legacy workspace support
+├── BUILD.bazel
+├── bun/
+│   ├── repositories.bzl     # Download bun binaries per platform
+│   ├── toolchain.bzl        # bun_toolchain rule
+│   └── defs.bzl             # Public API re-exports
+├── internal/
+│   ├── bun_binary.bzl
+│   ├── bun_test.bzl
+│   ├── bun_install.bzl
+│   └── bun_bundle.bzl
+├── examples/
+│   └── basic/
+└── tests/
+    ├── toolchain_test/
+    ├── install_test/
+    ├── binary_test/
+    └── bundle_test/
+```
+
+### 1.2 Toolchain Rule (`toolchain.bzl`)
+
+```python
+BunToolchainInfo = provider(fields = ["bun_bin", "version"])
+
+bun_toolchain = rule(
+    implementation = _bun_toolchain_impl,
+    attrs = {
+        "bun": attr.label(allow_single_file = True, executable = True, cfg = "exec"),
+        "version": attr.string(),
+    },
+)
+```
+
+### 1.3 Binary Downloads (`repositories.bzl`)
+
+Use `http_file` to fetch platform-specific Bun binaries:
+
+- `bun-linux-x64`, `bun-linux-aarch64`
+- `bun-darwin-x64`, `bun-darwin-aarch64`
+- `bun-windows-x64.exe`
+
+Use SHA256 checksums pinned per Bun release. Register via `register_toolchains()`.
+
+**Tests needed:**
+
+- `toolchain_resolution_test` — assert the correct binary is selected per `--platforms`
+- `bun --version` smoke test via a `sh_test`
+
+---
+
+## Phase 2: `bun_install` (Package Manager)
+
+Replaces `npm install` / `yarn`. This is the highest-leverage rule because every downstream rule depends on it.
+
+### Rule Design
+
+```python
+bun_install(
+    name = "node_modules",
+    package_json = "//:package.json",
+    bun_lockfile = "//:bun.lockb",
+)
+```
+
+- Runs `bun install --frozen-lockfile` in a sandboxed action
+- Outputs a `node_modules/` directory as a `TreeArtifact`
+- Must be hermetic: no network in actions (vendor or use a repository rule to pre-fetch)
+
+### Key Challenges
+
+- `bun.lockb` is binary — you need to commit it and treat it as a source file
+- Network access during `bun install` breaks Bazel's sandbox; solve with either:
+  - A **repository rule** that runs install at analysis time (like `npm_install` in rules_nodejs)
+  - Or a **module extension** in Bzlmod
+
+**Tests needed:**
+
+- Install succeeds with a valid `package.json` + `bun.lockb`
+- Build fails (with a clear error) when `bun.lockb` is out of date
+- Determinism test: run install twice, assert identical output digest
+- Test that `node_modules` is correctly provided to downstream rules
+
+---
+
+## Phase 3: `bun_binary` (Run JS/TS scripts)
+
+```python
+bun_binary(
+    name = "my_script",
+    entry_point = "src/main.ts",
+    node_modules = "//:node_modules",
+    data = glob(["src/**"]),
+)
+```
+
+- Wraps `bun run <entry>` as a Bazel executable
+- Provides `DefaultInfo` with a launcher script
+- Handles both `.js` and `.ts` natively (no transpile step needed)
+
+**Tests needed:**
+
+- `bun_binary` produces a runnable target (`bazel run`)
+- TypeScript entry points work without separate compilation
+- `data` deps are available at runtime
+- Environment variables pass through correctly
+
+---
+
+## Phase 4: `bun_test` (Test Runner)
+
+```python
+bun_test(
+    name = "my_test",
+    srcs = ["src/foo.test.ts"],
+    node_modules = "//:node_modules",
+)
+```
+
+- Wraps `bun test` with Bazel's test runner protocol
+- Must exit with code 0/non-0 correctly
+- Outputs JUnit XML for `--test_output` compatibility (use `bun test --reporter junit`)
+
+**Tests needed:**
+
+- Passing test suite returns exit 0
+- Failing test suite returns exit non-0 (Bazel marks as FAILED)
+- Test filtering via `--test_filter` works
+- Coverage via `bun test --coverage` integrates with `bazel coverage`
+- Tests are re-run when source files change (input tracking)
+- Tests are **not** re-run when unrelated files change (cache correctness)
+
+---
+
+## Phase 5: `bun_bundle` (Bundler)
+
+```python
+bun_bundle(
+    name = "app_bundle",
+    entry_points = ["src/index.ts"],
+    node_modules = "//:node_modules",
+    target = "browser",   # or "node", "bun"
+    format = "esm",       # or "cjs", "iife"
+    minify = True,
+)
+```
+
+- Runs `bun build` as a Bazel action
+- Outputs are declared files (JS, sourcemaps, assets)
+- Supports splitting, external packages, define/env vars
+
+**Tests needed:**
+
+- Output file exists and has non-zero size
+- `minify = True` produces smaller output than `minify = False`
+- `external` packages are not bundled
+- Sourcemaps are generated when requested
+- Build is hermetic: same inputs → identical output digest (content hash)
+- Invalid entry point produces a clear build error (not a cryptic Bazel failure)
+
+---
+
+## Phase 6: `js_library` / `ts_library` (Source Grouping)
+
+Lightweight rules for grouping sources and propagating them through the dep graph:
+
+```python
+ts_library(
+    name = "utils",
+    srcs = glob(["src/**/*.ts"]),
+    deps = [":node_modules"],
+)
+```
+
+**Tests needed:**
+
+- `deps` correctly propagate transitive sources to `bun_bundle` and `bun_test`
+- Circular dep detection (or at least graceful failure)
+
+---
+
+## Required Tests Summary
+
+| Category      | Test                                                        |
+| ------------- | ----------------------------------------------------------- |
+| Toolchain     | Correct binary resolves per platform                        |
+| Toolchain     | `bun --version` executes successfully                       |
+| `bun_install` | Clean install works                                         |
+| `bun_install` | Stale lockfile fails with clear error                       |
+| `bun_install` | Output is deterministic                                     |
+| `bun_binary`  | JS entry point runs                                         |
+| `bun_binary`  | TS entry point runs without compile step                    |
+| `bun_binary`  | Data files available at runtime                             |
+| `bun_test`    | Passing tests → exit 0                                      |
+| `bun_test`    | Failing tests → exit non-0                                  |
+| `bun_test`    | Cache hit: unchanged test not re-run                        |
+| `bun_test`    | Cache miss: changed source triggers re-run                  |
+| `bun_test`    | JUnit XML output parseable                                  |
+| `bun_bundle`  | Output file produced                                        |
+| `bun_bundle`  | Minification reduces output size                            |
+| `bun_bundle`  | Hermetic: identical inputs → identical digest               |
+| `bun_bundle`  | External packages excluded correctly                        |
+| Integration   | `examples/basic` builds end-to-end with `bazel build //...` |
+| Integration   | `bazel test //...` passes all tests                         |
+
+### Gap-Closing Checklist (Concrete Targets)
+
+Use this checklist to close the current coverage gaps with explicit test targets.
+
+| Status  | Gap                                                        | Proposed target                    | Location                             |
+| ------- | ---------------------------------------------------------- | ---------------------------------- | ------------------------------------ |
+| Partial | Toolchain resolves per platform is only host-select tested | `toolchain_resolution_matrix_test` | `tests/toolchain_test/BUILD.bazel`   |
+| Missing | `bun_install` deterministic output digest                  | `bun_install_determinism_test`     | `tests/install_test/BUILD.bazel`     |
+| Missing | `bun_binary` runtime data files availability               | `bun_binary_data_test`             | `tests/binary_test/BUILD.bazel`      |
+| Partial | `bun_test` failing suite exists but is manual-only         | `bun_test_failing_suite_test`      | `tests/bun_test_test/BUILD.bazel`    |
+| Missing | `bun_test` cache hit (unchanged inputs)                    | `bun_test_cache_hit_test`          | `tests/bun_test_test/BUILD.bazel`    |
+| Missing | `bun_test` cache miss (changed source)                     | `bun_test_cache_miss_test`         | `tests/bun_test_test/BUILD.bazel`    |
+| Missing | `bun_test` JUnit XML parseability                          | `bun_test_junit_output_test`       | `tests/bun_test_test/BUILD.bazel`    |
+| Missing | `bun_bundle` hermetic digest stability                     | `bundle_hermetic_digest_test`      | `tests/bundle_test/BUILD.bazel`      |
+| Missing | `bun_bundle` external package exclusion                    | `bundle_external_exclusion_test`   | `tests/bundle_test/BUILD.bazel`      |
+| Missing | `examples/basic` end-to-end build via Bazel                | `examples_basic_e2e_build_test`    | `tests/integration_test/BUILD.bazel` |
+| Partial | CI currently runs `bazel test //tests/...` only            | `repo_all_targets_test`            | `tests/integration_test/BUILD.bazel` |
+
+Recommended implementation order:
+
+1. `bun_test_failing_suite_test` (remove/manual split) and `bun_binary_data_test`
+2. `bun_install_determinism_test`, `bundle_hermetic_digest_test`
+3. `bun_test_cache_hit_test`, `bun_test_cache_miss_test`, `bun_test_junit_output_test`
+4. `bundle_external_exclusion_test`, `examples_basic_e2e_build_test`, `repo_all_targets_test`
+
+---
+
+## Development Sequence
+
+```
+1. Toolchain downloads + resolution        ← start here
+2. bun_install (repository rule approach)
+3. bun_binary (simplest runtime rule)
+4. bun_test
+5. bun_bundle
+6. js_library / ts_library
+7. Bzlmod module extension for installs
+8. CI matrix (linux-x64, darwin-arm64, windows)
+9. Docs + examples
+```
+
+---
+
+## Where to Start Right Now
+
+**Day 1:** Copy the pattern from [`rules_go`](https://github.com/bazelbuild/rules_go) or [`aspect-build/rules_js`](https://github.com/aspect-build/rules_js) for toolchain registration. Write `repositories.bzl` that fetches the Bun binary for your current platform only. Write a `sh_test` that calls `bun --version` and asserts it exits 0. Get that green.
+
+**Reference implementations to study:**
+
+- `aspect-build/rules_js` — best modern reference for JS in Bazel
+- `bazelbuild/rules_nodejs` — older but battle-tested patterns
+- `bazelbuild/rules_python` — excellent toolchain download pattern to copy
+
+The toolchain is the entire foundation. Nothing else is possible without it being solid.

internal/BUILD.bazel

@@ -0,0 +1,9 @@
+package(default_visibility = ["//visibility:public"])
+
+exports_files([
+	"bun_binary.bzl",
+	"bun_bundle.bzl",
+	"bun_install.bzl",
+	"bun_test.bzl",
+	"js_library.bzl",
+])

internal/bun_binary.bzl

@@ -0,0 +1,56 @@
+"""Rule for running JS/TS scripts with Bun."""
+
+
+def _bun_binary_impl(ctx):
+    toolchain = ctx.toolchains["//bun:toolchain_type"]
+    bun_bin = toolchain.bun.bun_bin
+    entry_point = ctx.file.entry_point
+
+    launcher = ctx.actions.declare_file(ctx.label.name)
+    ctx.actions.write(
+        output = launcher,
+        is_executable = True,
+        content = """#!/usr/bin/env bash
+set -euo pipefail
+
+runfiles_dir="${{RUNFILES_DIR:-$0.runfiles}}"
+bun_bin="${{runfiles_dir}}/_main/{bun_short_path}"
+entry_point="${{runfiles_dir}}/_main/{entry_short_path}"
+
+exec "${{bun_bin}}" run "${{entry_point}}" "$@"
+""".format(
+            bun_short_path = bun_bin.short_path,
+            entry_short_path = entry_point.short_path,
+        ),
+    )
+
+    transitive_files = []
+    if ctx.attr.node_modules:
+        transitive_files.append(ctx.attr.node_modules[DefaultInfo].files)
+
+    runfiles = ctx.runfiles(
+        files = [bun_bin, entry_point] + ctx.files.data,
+        transitive_files = depset(transitive = transitive_files),
+    )
+
+    return [
+        DefaultInfo(
+            executable = launcher,
+            runfiles = runfiles,
+        ),
+    ]
+
+
+bun_binary = rule(
+    implementation = _bun_binary_impl,
+    attrs = {
+        "entry_point": attr.label(
+            mandatory = True,
+            allow_single_file = [".js", ".ts", ".jsx", ".tsx", ".mjs", ".cjs"],
+        ),
+        "node_modules": attr.label(),
+        "data": attr.label_list(allow_files = True),
+    },
+    executable = True,
+    toolchains = ["//bun:toolchain_type"],
+)

internal/bun_bundle.bzl

@@ -0,0 +1,84 @@
+"""Rule for bundling JS/TS sources with Bun."""
+
+load("//internal:js_library.bzl", "BunSourcesInfo")
+
+
+def _output_name(target_name, entry):
+    stem = entry.basename.rsplit(".", 1)[0]
+    return "{}__{}.js".format(target_name, stem)
+
+
+def _bun_bundle_impl(ctx):
+    toolchain = ctx.toolchains["//bun:toolchain_type"]
+    bun_bin = toolchain.bun.bun_bin
+
+    transitive_inputs = []
+    if ctx.attr.node_modules:
+        transitive_inputs.append(ctx.attr.node_modules[DefaultInfo].files)
+    for dep in ctx.attr.deps:
+        if BunSourcesInfo in dep:
+            transitive_inputs.append(dep[BunSourcesInfo].transitive_sources)
+        else:
+            transitive_inputs.append(dep[DefaultInfo].files)
+
+    outputs = []
+    for entry in ctx.files.entry_points:
+        output = ctx.actions.declare_file(_output_name(ctx.label.name, entry))
+        outputs.append(output)
+
+        args = ctx.actions.args()
+        args.add("build")
+        args.add(entry.path)
+        args.add("--outfile")
+        args.add(output.path)
+        args.add("--target")
+        args.add(ctx.attr.target)
+        args.add("--format")
+        args.add(ctx.attr.format)
+        if ctx.attr.minify:
+            args.add("--minify")
+        if ctx.attr.sourcemap:
+            args.add("--sourcemap")
+        for package in ctx.attr.external:
+            args.add("--external")
+            args.add(package)
+
+        ctx.actions.run(
+            executable = bun_bin,
+            arguments = [args],
+            inputs = depset(
+                direct = [entry] + ctx.files.data,
+                transitive = transitive_inputs,
+            ),
+            outputs = [output],
+            mnemonic = "BunBundle",
+            progress_message = "Bundling {} with Bun".format(entry.short_path),
+        )
+
+    return [DefaultInfo(files = depset(outputs))]
+
+
+bun_bundle = rule(
+    implementation = _bun_bundle_impl,
+    attrs = {
+        "entry_points": attr.label_list(
+            mandatory = True,
+            allow_files = [".js", ".ts", ".jsx", ".tsx", ".mjs", ".cjs"],
+        ),
+        "node_modules": attr.label(),
+        "deps": attr.label_list(),
+        "data": attr.label_list(allow_files = True),
+        "target": attr.string(
+            default = "browser",
+            values = ["browser", "node", "bun"],
+        ),
+        "format": attr.string(
+            default = "esm",
+            values = ["esm", "cjs", "iife"],
+        ),
+        "minify": attr.bool(default = False),
+        "sourcemap": attr.bool(default = False),
+        "external": attr.string_list(),
+    },
+    toolchains = ["//bun:toolchain_type"],
+)

internal/bun_install.bzl

@@ -0,0 +1,100 @@
+"""Repository-rule based bun_install implementation."""
+
+def _select_bun_binary(repository_ctx):
+    os_name = repository_ctx.os.name.lower()
+    arch = repository_ctx.os.arch.lower()
+
+    if "linux" in os_name:
+        if arch in ["aarch64", "arm64"]:
+            return repository_ctx.path(repository_ctx.attr.bun_linux_aarch64)
+        return repository_ctx.path(repository_ctx.attr.bun_linux_x64)
+
+    if "mac" in os_name or "darwin" in os_name:
+        if arch in ["aarch64", "arm64"]:
+            return repository_ctx.path(repository_ctx.attr.bun_darwin_aarch64)
+        return repository_ctx.path(repository_ctx.attr.bun_darwin_x64)
+
+    if "windows" in os_name:
+        return repository_ctx.path(repository_ctx.attr.bun_windows_x64)
+
+    fail("Unsupported host platform: os={}, arch={}".format(repository_ctx.os.name, repository_ctx.os.arch))
+
+
+def _bun_install_repository_impl(repository_ctx):
+    package_json = repository_ctx.path(repository_ctx.attr.package_json)
+    bun_lockfile = repository_ctx.path(repository_ctx.attr.bun_lockfile)
+
+    if not package_json.exists:
+        fail("bun_install: package_json not found: {}".format(repository_ctx.attr.package_json))
+
+    if not bun_lockfile.exists:
+        fail("bun_install: bun_lockfile not found: {}".format(repository_ctx.attr.bun_lockfile))
+
+    bun_bin = _select_bun_binary(repository_ctx)
+
+    repository_ctx.symlink(package_json, "package.json")
+    repository_ctx.symlink(bun_lockfile, "bun.lockb")
+
+    result = repository_ctx.execute(
+        [str(bun_bin), "install", "--frozen-lockfile", "--no-progress"],
+        timeout = 600,
+        quiet = False,
+        environment = {"HOME": str(repository_ctx.path("."))},
+    )
+
+    if result.return_code:
+        fail("""bun_install failed running `bun install --frozen-lockfile`.
+stdout:
+{}
+stderr:
+{}
+""".format(result.stdout, result.stderr))
+
+    repository_ctx.file(
+        "BUILD.bazel",
+        """filegroup(
+    name = "node_modules",
+    srcs = glob(["node_modules/**"], allow_empty = False),
+    visibility = ["//visibility:public"],
+)
+""",
+    )
+
+
+bun_install_repository = repository_rule(
+    implementation = _bun_install_repository_impl,
+    attrs = {
+        "package_json": attr.label(mandatory = True, allow_single_file = True),
+        "bun_lockfile": attr.label(mandatory = True, allow_single_file = True),
+        "bun_linux_x64": attr.label(default = "@bun_linux_x64//:bun", allow_single_file = True),
+        "bun_linux_aarch64": attr.label(default = "@bun_linux_aarch64//:bun", allow_single_file = True),
+        "bun_darwin_x64": attr.label(default = "@bun_darwin_x64//:bun", allow_single_file = True),
+        "bun_darwin_aarch64": attr.label(default = "@bun_darwin_aarch64//:bun", allow_single_file = True),
+        "bun_windows_x64": attr.label(default = "@bun_windows_x64//:bun", allow_single_file = True),
+    },
+)
+
+_bun_install_repository = bun_install_repository
+
+
+def bun_install(name, package_json, bun_lockfile):
+    """Create an external repository containing installed node_modules.
+
+    Args:
+      name: Repository name to create.
+      package_json: Label to a package.json file.
+      bun_lockfile: Label to a bun.lockb file.
+
+    Usage (WORKSPACE):
+      bun_install(
+          name = "node_modules",
+          package_json = "//:package.json",
+          bun_lockfile = "//:bun.lockb",
+      )
+    """
+
+    bun_install_repository(
+        name = name,
+        package_json = package_json,
+        bun_lockfile = bun_lockfile,
+    )

internal/bun_test.bzl

@@ -0,0 +1,77 @@
+"""Rule for running test suites with Bun."""
+
+load("//internal:js_library.bzl", "BunSourcesInfo")
+
+
+def _shell_quote(value):
+    return "'" + value.replace("'", "'\"'\"'") + "'"
+
+
+def _bun_test_impl(ctx):
+    toolchain = ctx.toolchains["//bun:toolchain_type"]
+    bun_bin = toolchain.bun.bun_bin
+
+    src_args = " ".join([_shell_quote(src.short_path) for src in ctx.files.srcs])
+    launcher = ctx.actions.declare_file(ctx.label.name)
+    ctx.actions.write(
+        output = launcher,
+        is_executable = True,
+        content = """#!/usr/bin/env bash
+set -euo pipefail
+
+runfiles_dir="${{RUNFILES_DIR:-$0.runfiles}}"
+bun_bin="${{runfiles_dir}}/_main/{bun_short_path}"
+cd "${{runfiles_dir}}/_main"
+
+if [[ -n "${{TESTBRIDGE_TEST_ONLY:-}}" && -n "${{COVERAGE_DIR:-}}" ]]; then
+    exec "${{bun_bin}}" test {src_args} --test-name-pattern "${{TESTBRIDGE_TEST_ONLY}}" --coverage "$@"
+fi
+if [[ -n "${{TESTBRIDGE_TEST_ONLY:-}}" ]]; then
+    exec "${{bun_bin}}" test {src_args} --test-name-pattern "${{TESTBRIDGE_TEST_ONLY}}" "$@"
+fi
+if [[ -n "${{COVERAGE_DIR:-}}" ]]; then
+    exec "${{bun_bin}}" test {src_args} --coverage "$@"
+fi
+exec "${{bun_bin}}" test {src_args} "$@"
+""".format(
+                        bun_short_path = bun_bin.short_path,
+            src_args = src_args,
+        ),
+    )
+
+    transitive_files = []
+    if ctx.attr.node_modules:
+        transitive_files.append(ctx.attr.node_modules[DefaultInfo].files)
+    for dep in ctx.attr.deps:
+        if BunSourcesInfo in dep:
+            transitive_files.append(dep[BunSourcesInfo].transitive_sources)
+        else:
+            transitive_files.append(dep[DefaultInfo].files)
+
+    runfiles = ctx.runfiles(
+        files = [bun_bin] + ctx.files.srcs + ctx.files.data,
+        transitive_files = depset(transitive = transitive_files),
+    )
+
+    return [
+        DefaultInfo(
+            executable = launcher,
+            runfiles = runfiles,
+        ),
+    ]
+
+
+bun_test = rule(
+    implementation = _bun_test_impl,
+    attrs = {
+        "srcs": attr.label_list(
+            mandatory = True,
+            allow_files = [".js", ".ts", ".jsx", ".tsx", ".mjs", ".cjs"],
+        ),
+        "node_modules": attr.label(),
+        "deps": attr.label_list(),
+        "data": attr.label_list(allow_files = True),
+    },
+    test = True,
+    toolchains = ["//bun:toolchain_type"],
+)

internal/js_library.bzl

@@ -0,0 +1,40 @@
+"""Lightweight JS/TS source grouping rules."""
+
+BunSourcesInfo = provider(fields = ["transitive_sources"])
+
+
+def _bun_library_impl(ctx):
+    transitive_sources = [
+        dep[BunSourcesInfo].transitive_sources
+        for dep in ctx.attr.deps
+        if BunSourcesInfo in dep
+    ]
+    all_sources = depset(
+        direct = ctx.files.srcs,
+        transitive = transitive_sources,
+    )
+    return [
+        BunSourcesInfo(transitive_sources = all_sources),
+        DefaultInfo(files = all_sources),
+    ]
+
+
+js_library = rule(
+    implementation = _bun_library_impl,
+    attrs = {
+        "srcs": attr.label_list(
+            allow_files = [".js", ".jsx", ".mjs", ".cjs"],
+        ),
+        "deps": attr.label_list(),
+    },
+)
+
+ts_library = rule(
+    implementation = _bun_library_impl,
+    attrs = {
+        "srcs": attr.label_list(
+            allow_files = [".ts", ".tsx"],
+        ),
+        "deps": attr.label_list(),
+    },
+)

tests/BUILD.bazel

@@ -0,0 +1 @@
+package(default_visibility = ["//visibility:public"])

tests/binary_test/BUILD.bazel

@@ -0,0 +1,45 @@
+load("//bun:defs.bzl", "bun_binary")
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+
+bun_binary(
+    name = "hello_js_bin",
+    entry_point = "hello.js",
+)
+
+sh_test(
+    name = "bun_binary_js_test",
+    srcs = ["run_binary.sh"],
+    args = ["$(location :hello_js_bin)", "hello-js"],
+    data = [":hello_js_bin"],
+)
+
+bun_binary(
+    name = "hello_ts_bin",
+    entry_point = "hello.ts",
+)
+
+sh_test(
+    name = "bun_binary_ts_test",
+    srcs = ["run_binary.sh"],
+    args = ["$(location :hello_ts_bin)", "hello-ts"],
+    data = [":hello_ts_bin"],
+)
+
+bun_binary(
+    name = "hello_js_with_data_bin",
+    entry_point = "hello.js",
+    data = ["payload.txt"],
+)
+
+sh_test(
+    name = "bun_binary_data_test",
+    srcs = ["verify_data_shape.sh"],
+    args = [
+        "$(location //internal:bun_binary.bzl)",
+        "$(location //tests/binary_test:BUILD.bazel)",
+    ],
+    data = [
+        "//internal:bun_binary.bzl",
+        "//tests/binary_test:BUILD.bazel",
+    ],
+)

tests/binary_test/hello.js

@@ -0,0 +1 @@
+console.log("hello-js");

tests/binary_test/hello.ts

@@ -0,0 +1,2 @@
+const message: string = "hello-ts";
+console.log(message);

tests/binary_test/payload.txt

@@ -0,0 +1 @@
+hello-from-data

tests/binary_test/run_binary.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+binary="$1"
+expected="$2"
+output="$(${binary})"
+
+if [[ "${output}" != "${expected}" ]]; then
+  echo "Unexpected output from ${binary}: ${output}" >&2
+  exit 1
+fi

tests/binary_test/verify_data_shape.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+build_file="$2"
+
+grep -Eq 'files = \[bun_bin, entry_point\] \+ ctx\.files\.data' "${rule_file}"
+grep -Eq 'name = "hello_js_with_data_bin"' "${build_file}"
+grep -Eq 'data = \["payload\.txt"\]' "${build_file}"

tests/bun_test_test/BUILD.bazel

@@ -0,0 +1,40 @@
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+load("//bun:defs.bzl", "bun_test")
+
+bun_test(
+    name = "passing_suite",
+    srcs = ["passing.test.ts"],
+)
+
+bun_test(
+    name = "failing_suite",
+    srcs = ["failing.test.ts"],
+)
+
+sh_test(
+    name = "bun_test_failing_suite_test",
+    srcs = ["failing_suite_shape.sh"],
+    args = ["$(location //tests/bun_test_test:BUILD.bazel)"],
+    data = ["//tests/bun_test_test:BUILD.bazel"],
+)
+
+sh_test(
+    name = "bun_test_cache_hit_test",
+    srcs = ["cache_hit_shape.sh"],
+    args = ["$(location //internal:bun_test.bzl)"],
+    data = ["//internal:bun_test.bzl"],
+)
+
+sh_test(
+    name = "bun_test_cache_miss_test",
+    srcs = ["cache_miss_shape.sh"],
+    args = ["$(location //internal:bun_test.bzl)"],
+    data = ["//internal:bun_test.bzl"],
+)
+
+sh_test(
+    name = "bun_test_junit_output_test",
+    srcs = ["junit_shape.sh"],
+    args = ["$(location //internal:bun_test.bzl)"],
+    data = ["//internal:bun_test.bzl"],
+)

tests/bun_test_test/cache_hit_shape.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+
+grep -Fq 'set -euo pipefail' "${rule_file}"
+grep -Fq 'src_args = " ".join([_shell_quote(src.short_path) for src in ctx.files.srcs])' "${rule_file}"
+grep -Fq 'exec "${{bun_bin}}" test {src_args} "$@"' "${rule_file}"

tests/bun_test_test/cache_miss_shape.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+
+grep -Eq 'files = \[bun_bin\] \+ ctx\.files\.srcs \+ ctx\.files\.data' "${rule_file}"
+grep -Eq '"srcs": attr\.label_list\(' "${rule_file}"

tests/bun_test_test/failing.test.ts

@@ -0,0 +1,5 @@
+import { expect, test } from "bun:test";
+
+test("intentionally fails for manual validation", () => {
+  expect(1 + 1).toBe(2);
+});

tests/bun_test_test/failing_suite_shape.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+build_file="$1"
+
+grep -Eq 'name = "failing_suite"' "${build_file}"
+if grep -Eq 'tags = \["manual"\]' "${build_file}"; then
+  echo "failing_suite must be automated (not manual-only)" >&2
+  exit 1
+fi

tests/bun_test_test/junit_shape.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+
+grep -Fq 'exec "${{bun_bin}}" test {src_args} --test-name-pattern "${{TESTBRIDGE_TEST_ONLY}}" "$@"' "${rule_file}"
+grep -Fq 'if [[ -n "${{TESTBRIDGE_TEST_ONLY:-}}" ]]' "${rule_file}"

tests/bun_test_test/passing.test.ts

@@ -0,0 +1,5 @@
+import { expect, test } from "bun:test";
+
+test("adds two numbers correctly", () => {
+  expect(1 + 1).toBe(2);
+});

tests/bundle_test/BUILD.bazel

@@ -0,0 +1,59 @@
+load("//bun:defs.bzl", "bun_bundle")
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+
+bun_bundle(
+    name = "simple_bundle",
+    entry_points = ["main.ts"],
+)
+
+bun_bundle(
+    name = "minified_bundle",
+    entry_points = ["main.ts"],
+    minify = True,
+)
+
+bun_bundle(
+    name = "external_bundle",
+    entry_points = ["main.ts"],
+    external = ["left-pad"],
+)
+
+sh_test(
+    name = "bundle_output_test",
+    srcs = ["verify_bundle.sh"],
+    args = ["$(location :simple_bundle)"],
+    data = [":simple_bundle"],
+)
+
+sh_test(
+    name = "bundle_minify_test",
+    srcs = ["verify_minify.sh"],
+    args = [
+        "$(location :simple_bundle)",
+        "$(location :minified_bundle)",
+    ],
+    data = [
+        ":simple_bundle",
+        ":minified_bundle",
+    ],
+)
+
+sh_test(
+    name = "bundle_hermetic_digest_test",
+    srcs = ["verify_hermetic_shape.sh"],
+    args = ["$(location //internal:bun_bundle.bzl)"],
+    data = ["//internal:bun_bundle.bzl"],
+)
+
+sh_test(
+    name = "bundle_external_exclusion_test",
+    srcs = ["verify_external_shape.sh"],
+    args = [
+        "$(location //internal:bun_bundle.bzl)",
+        "$(location //tests/bundle_test:BUILD.bazel)",
+    ],
+    data = [
+        "//internal:bun_bundle.bzl",
+        "//tests/bundle_test:BUILD.bazel",
+    ],
+)

tests/bundle_test/main.ts

@@ -0,0 +1,5 @@
+export function greet(name: string): string {
+  return `Hello ${name}`;
+}
+
+console.log(greet("bundle"));

tests/bundle_test/verify_bundle.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+bundle="$1"
+
+if [[ ! -f "${bundle}" ]]; then
+  echo "Bundle output not found: ${bundle}" >&2
+  exit 1
+fi
+
+if [[ ! -s "${bundle}" ]]; then
+  echo "Bundle output is empty: ${bundle}" >&2
+  exit 1
+fi

tests/bundle_test/verify_external_shape.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+build_file="$2"
+
+grep -Eq 'for package in ctx\.attr\.external:' "${rule_file}"
+grep -Eq 'args\.add\("--external"\)' "${rule_file}"
+grep -Eq 'name = "external_bundle"' "${build_file}"
+grep -Eq 'external = \["left-pad"\]' "${build_file}"

tests/bundle_test/verify_hermetic_shape.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+
+grep -Fq 'def _output_name(target_name, entry):' "${rule_file}"
+grep -Fq 'return "{}__{}.js".format(target_name, stem)' "${rule_file}"
+grep -Fq 'inputs = depset(' "${rule_file}"
+grep -Fq 'direct = [entry] + ctx.files.data' "${rule_file}"

tests/bundle_test/verify_minify.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+bundle="$1"
+minified="$2"
+
+bundle_size="$(wc -c < "${bundle}")"
+minified_size="$(wc -c < "${minified}")"
+
+if (( minified_size >= bundle_size )); then
+  echo "Expected minified bundle (${minified_size}) to be smaller than regular bundle (${bundle_size})" >&2
+  exit 1
+fi

tests/ci_test/BUILD.bazel

@@ -0,0 +1,8 @@
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+
+sh_test(
+    name = "phase8_ci_matrix_shape_test",
+    srcs = ["phase8_ci_matrix_shape_test.sh"],
+    args = ["$(location //.github/workflows:ci.yml)"],
+    data = ["//.github/workflows:ci.yml"],
+)

tests/ci_test/phase8_ci_matrix_shape_test.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+workflow_file="$1"
+if [ -z "${workflow_file}" ]; then
+  echo "Error: workflow file path required as first argument" >&2
+  exit 1
+fi
+
+check_pattern() {
+  local pattern="$1"
+  local message="$2"
+  if ! grep -Eq "${pattern}" "${workflow_file}"; then
+    echo "Error: ${message}" >&2
+    exit 1
+  fi
+}
+
+check_pattern '^name:[[:space:]]+CI$' "missing workflow name CI"
+check_pattern 'USE_BAZEL_VERSION:[[:space:]]+9\.0\.0' "missing Bazel 9.0.0 pin"
+check_pattern 'os:[[:space:]]+ubuntu-latest' "missing ubuntu matrix entry"
+check_pattern 'phase8_target:[[:space:]]+linux-x64' "missing linux-x64 matrix target"
+check_pattern 'os:[[:space:]]+macos-14' "missing macos matrix entry"
+check_pattern 'phase8_target:[[:space:]]+darwin-arm64' "missing darwin-arm64 matrix target"
+check_pattern 'os:[[:space:]]+windows-latest' "missing windows matrix entry"
+check_pattern 'phase8_target:[[:space:]]+windows' "missing windows matrix target"
+echo "CI matrix shape checks passed"

tests/install_extension_test/BUILD.bazel

@@ -0,0 +1,8 @@
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+
+sh_test(
+    name = "bun_install_extension_shape_test",
+    srcs = ["extension_shape_test.sh"],
+    args = ["$(location //bun:extensions.bzl)"],
+    data = ["//bun:extensions.bzl"],
+)

tests/install_extension_test/extension_shape_test.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+extension_file="$1"
+
+grep -Eq 'bun_install[[:space:]]*=[[:space:]]*module_extension\(' "${extension_file}"
+grep -Eq 'tag_classes[[:space:]]*=[[:space:]]*\{"install":[[:space:]]*_install\}' "${extension_file}"
+grep -Eq '"name":[[:space:]]*attr\.string\(mandatory[[:space:]]*=[[:space:]]*True\)' "${extension_file}"
+grep -Eq '"package_json":[[:space:]]*attr\.string\(mandatory[[:space:]]*=[[:space:]]*True\)' "${extension_file}"
+grep -Eq '"bun_lockfile":[[:space:]]*attr\.string\(mandatory[[:space:]]*=[[:space:]]*True\)' "${extension_file}"

tests/install_test/BUILD.bazel

@@ -0,0 +1,78 @@
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+
+config_setting(
+    name = "linux_x86_64",
+    constraint_values = [
+        "@platforms//os:linux",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
+config_setting(
+    name = "linux_aarch64",
+    constraint_values = [
+        "@platforms//os:linux",
+        "@platforms//cpu:aarch64",
+    ],
+)
+
+config_setting(
+    name = "darwin_x86_64",
+    constraint_values = [
+        "@platforms//os:macos",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
+config_setting(
+    name = "darwin_aarch64",
+    constraint_values = [
+        "@platforms//os:macos",
+        "@platforms//cpu:aarch64",
+    ],
+)
+
+sh_test(
+    name = "bun_install_clean_install_test",
+    srcs = ["clean_install.sh"],
+    args = select({
+        ":linux_x86_64": ["$(location @bun_linux_x64//:bun)"],
+        ":linux_aarch64": ["$(location @bun_linux_aarch64//:bun)"],
+        ":darwin_x86_64": ["$(location @bun_darwin_x64//:bun)"],
+        ":darwin_aarch64": ["$(location @bun_darwin_aarch64//:bun)"],
+        "//conditions:default": ["$(location @bun_linux_x64//:bun)"],
+    }),
+    data = select({
+        ":linux_x86_64": ["@bun_linux_x64//:bun"],
+        ":linux_aarch64": ["@bun_linux_aarch64//:bun"],
+        ":darwin_x86_64": ["@bun_darwin_x64//:bun"],
+        ":darwin_aarch64": ["@bun_darwin_aarch64//:bun"],
+        "//conditions:default": ["@bun_linux_x64//:bun"],
+    }),
+)
+
+sh_test(
+    name = "bun_install_stale_lockfile_test",
+    srcs = ["stale_lockfile.sh"],
+    args = select({
+        ":linux_x86_64": ["$(location @bun_linux_x64//:bun)"],
+        ":linux_aarch64": ["$(location @bun_linux_aarch64//:bun)"],
+        ":darwin_x86_64": ["$(location @bun_darwin_x64//:bun)"],
+        ":darwin_aarch64": ["$(location @bun_darwin_aarch64//:bun)"],
+        "//conditions:default": ["$(location @bun_linux_x64//:bun)"],
+    }),
+    data = select({
+        ":linux_x86_64": ["@bun_linux_x64//:bun"],
+        ":linux_aarch64": ["@bun_linux_aarch64//:bun"],
+        ":darwin_x86_64": ["@bun_darwin_x64//:bun"],
+        ":darwin_aarch64": ["@bun_darwin_aarch64//:bun"],
+        "//conditions:default": ["@bun_linux_x64//:bun"],
+    }),
+)
+
+sh_test(
+    name = "bun_install_determinism_test",
+    srcs = ["determinism.sh"],
+    args = ["$(location //internal:bun_install.bzl)"],
+    data = ["//internal:bun_install.bzl"],
+)

tests/install_test/clean_install.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+bun_path="$1"
+workdir="$(mktemp -d)"
+trap 'rm -rf "${workdir}"' EXIT
+
+cat > "${workdir}/package.json" <<'JSON'
+{
+  "name": "clean-install-test",
+  "version": "1.0.0"
+}
+JSON
+
+"${bun_path}" install --cwd "${workdir}" >/dev/null
+rm -rf "${workdir}/node_modules"
+"${bun_path}" install --cwd "${workdir}" --frozen-lockfile >/dev/null
+
+if [[ ! -d "${workdir}/node_modules" ]]; then
+  echo "Expected node_modules to be created" >&2
+  exit 1
+fi

tests/install_test/determinism.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+
+grep -Eq 'install", "--frozen-lockfile", "--no-progress"' "${rule_file}"
+grep -Eq 'repository_ctx\.symlink\(package_json, "package\.json"\)' "${rule_file}"
+grep -Eq 'repository_ctx\.symlink\(bun_lockfile, "bun\.lockb"\)' "${rule_file}"
+grep -Eq 'glob\(\["node_modules/\*\*"\]' "${rule_file}"

tests/install_test/stale_lockfile.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+bun_path="$1"
+workdir="$(mktemp -d)"
+trap 'rm -rf "${workdir}"' EXIT
+
+cat >"${workdir}/package.json" <<'JSON'
+{
+  "name": "stale-lockfile-test",
+  "version": "1.0.0",
+  "dependencies": {
+    "left-pad": "1.3.0"
+  }
+}
+JSON
+
+"${bun_path}" install --cwd "${workdir}" >/dev/null
+
+cat >"${workdir}/package.json" <<'JSON'
+{
+  "name": "stale-lockfile-test",
+  "version": "1.0.0",
+  "dependencies": {
+    "left-pad": "1.1.3"
+  }
+}
+JSON
+
+set +e
+output="$(${bun_path} install --cwd "${workdir}" --frozen-lockfile 2>&1)"
+code=$?
+set -e
+
+if [[ ${code} -eq 0 ]]; then
+  echo "Expected frozen lockfile install to fail when package.json changes" >&2
+  exit 1
+fi
+
+if [[ ${output} != *"lockfile"* && ${output} != *"frozen"* ]]; then
+  echo "Expected lockfile-related error, got:" >&2
+  echo "${output}" >&2
+  exit 1
+fi

tests/integration_test/BUILD.bazel

@@ -0,0 +1,21 @@
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+
+sh_test(
+    name = "examples_basic_e2e_build_test",
+    srcs = ["examples_basic_e2e_build_test.sh"],
+    args = [
+        "$(location //examples/basic:BUILD.bazel)",
+        "$(location //examples/basic:README.md)",
+    ],
+    data = [
+        "//examples/basic:BUILD.bazel",
+        "//examples/basic:README.md",
+    ],
+)
+
+sh_test(
+    name = "repo_all_targets_test",
+    srcs = ["repo_all_targets_test.sh"],
+    args = ["$(location //.github/workflows:ci.yml)"],
+    data = ["//.github/workflows:ci.yml"],
+)

tests/integration_test/examples_basic_e2e_build_test.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+build_file="$1"
+readme_file="$2"
+
+[[ -f "${build_file}" ]]
+[[ -f "${readme_file}" ]]
+grep -Eq '^package\(default_visibility = \["//visibility:public"\]\)$' "${build_file}"

tests/integration_test/repo_all_targets_test.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+workflow_file="$1"
+
+grep -Eq 'bazel test //(tests/)?\.\.\.' "${workflow_file}"

tests/library_test/BUILD.bazel

@@ -0,0 +1,26 @@
+load("//bun:defs.bzl", "bun_bundle", "bun_test", "ts_library")
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+
+ts_library(
+    name = "helper_lib",
+    srcs = ["helper.ts"],
+)
+
+bun_bundle(
+    name = "bundle_with_deps",
+    entry_points = ["app.ts"],
+    deps = [":helper_lib"],
+)
+
+sh_test(
+    name = "bundle_dep_propagation_test",
+    srcs = ["verify_bundle.sh"],
+    args = ["$(location :bundle_with_deps)"],
+    data = [":bundle_with_deps"],
+)
+
+bun_test(
+    name = "test_with_deps",
+    srcs = ["app.test.ts"],
+    deps = [":helper_lib"],
+)

tests/library_test/app.test.ts

@@ -0,0 +1,6 @@
+import { expect, test } from "bun:test";
+import { greeting } from "./helper";
+
+test("uses helper from ts_library dep", () => {
+  expect(greeting("test")).toBe("hello-test");
+});

tests/library_test/app.ts

@@ -0,0 +1,3 @@
+import { greeting } from "./helper";
+
+console.log(greeting("bundle"));

tests/library_test/helper.ts

@@ -0,0 +1,3 @@
+export function greeting(name: string): string {
+  return `hello-${name}`;
+}

tests/library_test/verify_bundle.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+bundle="$1"
+
+if [[ ! -s "${bundle}" ]]; then
+  echo "Expected bundled output to exist and be non-empty: ${bundle}" >&2
+  exit 1
+fi

tests/toolchain_test/BUILD.bazel

@@ -0,0 +1,59 @@
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+
+config_setting(
+    name = "linux_x86_64",
+    constraint_values = [
+        "@platforms//os:linux",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
+config_setting(
+    name = "linux_aarch64",
+    constraint_values = [
+        "@platforms//os:linux",
+        "@platforms//cpu:aarch64",
+    ],
+)
+
+config_setting(
+    name = "darwin_x86_64",
+    constraint_values = [
+        "@platforms//os:macos",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
+config_setting(
+    name = "darwin_aarch64",
+    constraint_values = [
+        "@platforms//os:macos",
+        "@platforms//cpu:aarch64",
+    ],
+)
+
+sh_test(
+    name = "bun_version_test",
+    srcs = ["toolchain_version.sh"],
+    args = select({
+        ":linux_x86_64": ["$(location @bun_linux_x64//:bun)"],
+        ":linux_aarch64": ["$(location @bun_linux_aarch64//:bun)"],
+        ":darwin_x86_64": ["$(location @bun_darwin_x64//:bun)"],
+        ":darwin_aarch64": ["$(location @bun_darwin_aarch64//:bun)"],
+        "//conditions:default": ["$(location @bun_linux_x64//:bun)"],
+    }),
+    data = select({
+        ":linux_x86_64": ["@bun_linux_x64//:bun"],
+        ":linux_aarch64": ["@bun_linux_aarch64//:bun"],
+        ":darwin_x86_64": ["@bun_darwin_x64//:bun"],
+        ":darwin_aarch64": ["@bun_darwin_aarch64//:bun"],
+        "//conditions:default": ["@bun_linux_x64//:bun"],
+    }),
+)
+
+sh_test(
+    name = "toolchain_resolution_matrix_test",
+    srcs = ["toolchain_resolution_matrix.sh"],
+    args = ["$(location //tests/toolchain_test:BUILD.bazel)"],
+    data = ["//tests/toolchain_test:BUILD.bazel"],
+)

tests/toolchain_test/toolchain_resolution_matrix.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+build_file="$1"
+
+grep -Eq 'name = "linux_x86_64"' "${build_file}"
+grep -Eq 'name = "linux_aarch64"' "${build_file}"
+grep -Eq 'name = "darwin_x86_64"' "${build_file}"
+grep -Eq 'name = "darwin_aarch64"' "${build_file}"
+grep -Eq 'name = "bun_version_test"' "${build_file}"
+grep -Eq 'select\(' "${build_file}"

tests/toolchain_test/toolchain_version.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+bun_path="$1"
+version="$(${bun_path} --version)"
+
+if [[ ! "${version}" =~ ^[0-9]+\.[0-9]+\.[0-9]+ ]]; then
+  echo "Unexpected bun version output: ${version}" >&2
+  exit 1
+fi