Kotlin Version Pinned

✓ Guardrail Kotlin Project Guardrails Beta Devex Build And Ci

kotlin.kotlin-version-pinned

Ensures the Kotlin compiler version is declared — via the Gradle kotlin("jvm") version "..." / id("org.jetbrains.kotlin.jvm") plugin, <kotlin.version> in pom.xml, or a kotlin entry in gradle/libs.versions.toml. Pinning the compiler version prevents drift between developers and CI.

kotlin version kotlin plugin version pinning

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Compatible Integrations

This guardrail works with the following integrations. Click to see how to use Kotlin Version Pinned with each collector.

Kotlin Version Pinned + Kotlin Collector Provides Kotlin project metadata

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Enable This Guardrail

Add the parent policy to your lunar-config.yml to enable this guardrail.

📄 lunar-config.yml

policies:
  - uses: github://earthly/lunar-lib/policies/kotlin@v1.0.5
    include: [kotlin-version-pinned]
    # with: ...

How This Guardrail Works

This guardrail is part of the Kotlin Project Guardrails policy. It evaluates data collected by integrations and produces a pass/fail check with actionable feedback.

When enabled, this check runs automatically on every PR and in AI coding workflows, providing real-time enforcement of your engineering standards.

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↓ Integrations Gather Data

Collectors extract metadata from code, CI pipelines, tool outputs, and scans

{ } Centralized as JSON

All data merged into each component's unified metadata document

✓ This Guardrail Checks Current

Kotlin Version Pinned runs and provides pass/fail feedback

Configuration Options

These inputs can be configured in your lunar-config.yml to customize how the parent policy (and this guardrail) behaves.

Input	Required	Default	Description
`min_kotlin_version`	Optional	`1.8`	Minimum required Kotlin compiler version (e.g., "1.8", "1.9", "2.0"). Compared with semantic-version semantics — "1.8" matches 1.8.x and above, but rejects 1.7.x.

Kotlin Project Guardrails

This guardrail is part of the Kotlin Project Guardrails policy, which includes 7 guardrails for devex build and ci.

View Policy

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