buildifier-prebuilt

This repo contains bazel rules for buildifier and buildozer using
prebuilt binaries with bazel toolchains instead of requiring you depend
on rules_go. This also means you won't download every possible version
of these binaries, you'll only download the ones for the platform you're
running on.

Usage

You can create a rule for running buildifier:

load("@buildifier_prebuilt//:rules.bzl", "buildifier")

buildifier(
    name = "buildifier.check",
    exclude_patterns = [
        "./.git/*",
    ],
    lint_mode = "warn",
    mode = "diff",
)

That can be run with:

bazel run //:buildifier.check

Or you can run buildifier or buildozer directly:

bazel run -- @buildifier_prebuilt//:buildozer ARGS
bazel run -- @buildifier_prebuilt//:buildifier ARGS

Installation

Add the following to your WORKSPACE file.

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "buildifier_prebuilt",
    sha256 = "b3fd85ae7e45c2f36bce52cfdbdb6c20261761ea5928d1686edc8873b0d0dad0",
    strip_prefix = "buildifier-prebuilt-5.1.0",
    urls = [
        "http://github.com/keith/buildifier-prebuilt/archive/5.1.0.tar.gz",
    ],
)

load("@buildifier_prebuilt//:deps.bzl", "buildifier_prebuilt_deps")

buildifier_prebuilt_deps()

load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")

bazel_skylib_workspace()

load("@buildifier_prebuilt//:defs.bzl", "buildifier_prebuilt_register_toolchains")

buildifier_prebuilt_register_toolchains()

Specify Version of Buildtools

By default releases of these rules include the most up to date versions of the tools at the current
time. If you would like to specify a specific version of buildtools to use, you can do one of the
following.

Option 1: Quick and Easy

Update the buildifier_prebuilt_register_toolchains declaration in your WORKSPACE file to specify
the version.

# Use buildtools version 4.2.5.
buildifier_prebuilt_register_toolchains(
    assets = buildtools_assets(version = "4.2.5"),
)

The above example will download version 4.2.5 of the buildtools binaries. The only downside is
that you will see warnings stating that a canonical version can be specified using SHA256 values.

Option 2: Manually Add SHA256 Values

To add SHA256 values to the declaration, add a sha256_values attribute and specify the values in a
dict where the key is <tool>_<platform>_<arch> and the value is the SHA256 value.

# Use buildtools version 4.2.5.
buildifier_prebuilt_register_toolchains(
    assets = buildtools_assets(version = "4.2.5"),
    sha256_values = {
        "buildifier_darwin_amd64": "757f246040aceb2c9550d02ef5d1f22d3ef1ff53405fe76ef4c6239ef1ea2cc1",
        "buildifier_darwin_arm64": "4cf02e051f6cda18765935cb6e77cc938cf8b405064589a50fe9582f82c7edaf",
        "buildifier_linux_amd64": "f94e71b22925aff76ce01a49e1c6c6d31f521bbbccff047b81f2ea01fd01a945",
        "buildifier_linux_arm64": "2113d79e45efb51e2b3013c8737cb66cadae3fd89bd7e820438cb06201e50874",
        "buildozer_darwin_amd64": "3fe671620e6cb7d2386f9da09c1de8de88b02b9dd9275cdecd8b9e417f74df1b",
        "buildozer_darwin_arm64": "ff4d297023fe3e0fd14113c78f04cef55289ca5bfe5e45a916be738b948dc743",
        "buildozer_linux_amd64": "e8e39b71c52318a9030dd9fcb9bbfd968d0e03e59268c60b489e6e6fc1595d7b",
        "buildozer_linux_arm64": "96227142969540def1d23a9e8225524173390d23f3d7fd56ce9c4436953f02fc",
    },
)

The downside to this is that you will need to manually download each binary that you will use in
your builds and calculate the SHA256 value.

Option 3: Quick, Easy and Canonical

We have included a utility which will generate a buildifier_prebuilt_register_toolchains
declaration with the appropriate SHA256 values. If you execute it without any arguments, it will
use the latest release of buildtools. Just copy and paste the declaration into your WORKSPACE
file.

# Generate the declaration for the latest
$ bazel run //tools:generate_assets_declaration
load("@buildifier_prebuilt//:defs.bzl", "buildifier_prebuilt_register_toolchains", "buildtools_assets")

buildifier_prebuilt_register_toolchains(
    assets = buildtools_assets(
        version = "4.2.5",
        names = ["buildifier", "buildozer"],
        platforms = ["darwin", "linux"],
        arches = ["amd64", "arm64"],
        sha256_values = {
            "buildifier_darwin_amd64": "757f246040aceb2c9550d02ef5d1f22d3ef1ff53405fe76ef4c6239ef1ea2cc1",
            "buildifier_darwin_arm64": "4cf02e051f6cda18765935cb6e77cc938cf8b405064589a50fe9582f82c7edaf",
            "buildifier_linux_amd64": "f94e71b22925aff76ce01a49e1c6c6d31f521bbbccff047b81f2ea01fd01a945",
            "buildifier_linux_arm64": "2113d79e45efb51e2b3013c8737cb66cadae3fd89bd7e820438cb06201e50874",
            "buildozer_darwin_amd64": "3fe671620e6cb7d2386f9da09c1de8de88b02b9dd9275cdecd8b9e417f74df1b",
            "buildozer_darwin_arm64": "ff4d297023fe3e0fd14113c78f04cef55289ca5bfe5e45a916be738b948dc743",
            "buildozer_linux_amd64": "e8e39b71c52318a9030dd9fcb9bbfd968d0e03e59268c60b489e6e6fc1595d7b",
            "buildozer_linux_arm64": "96227142969540def1d23a9e8225524173390d23f3d7fd56ce9c4436953f02fc",
        },
    ),
)

You may also specify a specific version of buildtools by adding it to the end of the command.

# Generate the declaration for version 4.2.3
$ bazel run //tools:generate_assets_declaration -- 4.2.3
load("@buildifier_prebuilt//:defs.bzl", "buildifier_prebuilt_register_toolchains", "buildtools_assets")

buildifier_prebuilt_register_toolchains(
    assets = buildtools_assets(
        version = "4.2.3",
        names = ["buildifier", "buildozer"],
        platforms = ["darwin", "linux"],
        arches = ["amd64", "arm64"],
        sha256_values = {
            "buildifier_darwin_amd64": "954ec397089344b1564e45dc095e9331e121eb0f20e72032fcc8e94de78e5663",
            "buildifier_darwin_arm64": "9434043897a3c3821fda87046918e5a6c4320d8352df700f62046744c4d168a3",
            "buildifier_linux_amd64": "a19126536bae9a3917a7fc4bdbbf0378371a1d1683ab2415857cf53bce9dee49",
            "buildifier_linux_arm64": "39bd9d01d3638902a1e4cef353048ed160f0575f5df1bef175bd7637386d183c",
            "buildozer_darwin_amd64": "edcabae1d97bdc42559d7d1d65dfe7f8970db8d95d4bc9e7bf6656a9f2fb5592",
            "buildozer_darwin_arm64": "f8d0994620dec1247328f13db1d434b6489dd007f8e9b961dbd9363bc6fe7071",
            "buildozer_linux_amd64": "6b4177321b770fb788b618caa453d34561b8c05081ae8b27657e527c2a3b5d52",
            "buildozer_linux_arm64": "edfa964b283352ffd7503faca503de8f06dfcd1c7c96a6737e9452167e93c687",
        },
    ),
)

NOTE: The utility uses the GitHub CLI. If you haven't already done so,
install it.

dhalperi/buildifier-prebuilt