bazel_rules_detekt

The Detekt (a Kotlin static analysis tool) integration for the Bazel build system.

Features

• configuration and baseline files;
• HTML, text and XML reports;
• plugins;
• customizable Detekt version and JVM flags;
• persistent workers support;
• and more.

Usage

MODULE.bazel Configuration

bazel_dep(name = "rules_detekt", version = "...")

WORKSPACE Configuration

First of all you need to declare the rule in the WORKSPACE file. Please refer to GitHub releases for the version and the SHA-256 hashsum.

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

rules_detekt_version = "see-github-releases-page"
rules_detekt_sha = "see-github-releases-page"

http_archive(
    name = "rules_detekt",
    sha256 = rules_detekt_sha,
    strip_prefix = "bazel_rules_detekt-{v}".format(v = rules_detekt_version),
    url = "https://github.com/buildfoundation/bazel_rules_detekt/archive/v{v}.tar.gz".format(v = rules_detekt_version),
)

load("@rules_detekt//detekt:dependencies.bzl", "rules_detekt_dependencies")
rules_detekt_dependencies()

load("@rules_detekt//detekt:toolchains.bzl", "rules_detekt_toolchains")
rules_detekt_toolchains()

bazelrc Configuration

Users on Bazel releases prior to 5.1.0 need to enable the JSON Persistent Worker protocol in their .bazelrc like so:

build --experimental_worker_allow_json_protocol

This option became stable and enabled by default for newer Bazel releases.

BUILD Configuration

Once declared in the WORSKPACE or MODULE.bazel file, the rule can be loaded in the BUILD file.

load("@rules_detekt//detekt:defs.bzl", "detekt_test")

detekt_test(
    name = "my_detekt",
    srcs = glob(["src/main/kotlin/**/*.kt"]),
)

See available attributes.

Execution

$ bazel build //mypackage:my_detekt

Results will be cached on successful runs.

Advanced Configuration

Detekt Version

Change the MODULE.bazel file:

detekt = use_extension("//detekt:extensions.bzl", "detekt")
detekt.detekt_version(
    version = "x.x.x",
    sha256 = "x.x.x.sha256",
)
use_repo(detekt, "detekt_cli_all")

Or change the WORKSPACE file:

load("@rules_detekt//detekt:versions.bzl", "detekt_version")
load("@rules_detekt//detekt:dependencies.bzl", "rules_detekt_dependencies")

rules_detekt_dependencies(
    detekt_version = detekt_version(
        version = "x.x.x",
        sha256 = "x.x.x.sha256",
    )
)

JVM Flags

Define a toolchain in a BUILD file:

load("@rules_detekt//detekt:toolchain.bzl", "detekt_toolchain")

detekt_toolchain(
    name = "my_detekt_toolchain_impl",
    jvm_flags = ["-Xms16m", "-Xmx128m"],
)

toolchain(
    name = "my_detekt_toolchain",
    toolchain = "my_detekt_toolchain_impl",
    toolchain_type = "@rules_detekt//detekt:toolchain_type",
)

Change the WORKSPACE file:

load("@rules_detekt//detekt:toolchains.bzl", "rules_detekt_toolchains")

rules_detekt_toolchains(toolchain = "//mypackage:my_detekt_toolchain")