apple
pkl
Java

A configuration as code language with rich validation and tooling.

Last updated Jul 7, 2026
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Language breakdown
Java 65.5%
Kotlin 28.7%
Pkl 5.0%
JavaScript 0.6%
CSS 0.2%
Shell 0.0%
โ–ธ Files click to expand
README

= image:.idea/icon.svg[Pkl,30] Pkl

:uri-homepage: https://pkl-lang.org :uri-docs: {uri-homepage}/main/current :uri-docs-introduction: {uri-docs}/introduction :uri-docs-release-notes: {uri-docs}/release-notes :uri-docs-language: {uri-docs}/language :uri-docs-tools: {uri-docs}/tools :uri-github-issue: https://github.com/apple/pkl/issues :uri-github-discussions: https://github.com/apple/pkl/discussions :uri-pkl-examples: https://pkl-lang.org/main/current/examples.html :uri-installation: https://pkl-lang.org/main/current/pkl-cli/index.html#installation :uri-lang-reference: https://pkl-lang.org/main/current/language-reference/index.html :uri-ci-artifacts: https://s01.oss.sonatype.org/content/groups/public/org/pkl-lang/ :uri-ci-pipeline: https://github.com/apple/pkl/actions

A configuration as code language with rich validation and tooling.

== Quick Links

  • {uri-installation}[Installation]
  • {uri-lang-reference}[Language Reference]
== Documentation
  • {uri-homepage}[Home Page]
** {uri-docs-introduction}[Introduction] ** {uri-docs-language}[Language] ** {uri-docs-tools}[Tools] ** {uri-pkl-examples}[Examples] ** {uri-docs-release-notes}[Release Notes]

== Community

We'd love to hear from you!

  • Create an {uri-github-issue}[issue]
  • Ask a question on {uri-github-discussions}[GitHub Discussions]
== Development

image:https://github.com/apple/pkl/actions/workflows/main.yml/badge.svg?style=svg["Build (main)", link="https://github.com/apple/pkl/actions/workflows/main.yml"]

  • link:CONTRIBUTING.adoc[] for tips on pull requests and filing issues
  • link:DEVELOPMENT.adoc[] for build instructions
  • {uri-ci-artifacts}[Sonatype Repository] for the artifacts/binaries built by our {uri-ci-pipeline}[CI pipelines] (and those of our other tools and packages repositories).
== Pkl GitHub Repositories

[%autowidth] |=== |Name |Description

|apple/pkl |A configuration as code language with rich validation and tooling.

|https://github.com/apple/pkl-evolution[apple/pkl-evolution] |Suggested Pkl Improvements, Changes, or Enhancements (SPICEs)

|https://github.com/apple/pkl-go[apple/pkl-go] |Pkl bindings for the Go programming language

|https://github.com/apple/pkl-go-examples[apple/pkl-go-examples] |Examples for using Pkl within Go applications

|https://github.com/apple/highlightjs-pkl[apple/highlightjs-pkl] |Highlight.js syntax highlighting for Pkl

|https://github.com/apple/pkl-intellij[apple/pkl-intellij] |JetBrains editor plugins providing Pkl language support

|https://github.com/apple/pkl-jvm-examples[apple/pkl-jvm-examples] |Examples for using Pkl within JVM applications

|https://github.com/apple/pkl-k8s[apple/pkl-k8s] |Templates for using Pkl with Kubernetes

|https://github.com/apple/pkl-k8s-examples[apple/pkl-k8s-examples] |Examples for using Pkl with Kubernetes

|https://github.com/apple/pkl-lang.org[apple/pkl-lang.org] |The pkl-lang.org website

|https://github.com/apple/pkl-lsp[apple/pkl-lsp] |Language server for Pkl, implementing the server-side of the Language Server Protocol

|https://github.com/apple/pkl-neovim[apple/pkl-neovim] |Pkl language support for Neovim

|https://github.com/apple/pkl-package-docs[apple/pkl-package-docs] |Documentation for Pkl packages

|https://github.com/apple/pkl-pantry[apple/pkl-pantry] |Shared Pkl packages

|https://github.com/apple/pkl-project-commons[apple/pkl-project-commons] |Utility libraries for Pkl

|https://github.com/apple/pkl-readers[apple/pkl-readers] |Shared Pkl https://pkl-lang.org/main/current/language-reference/index.html#external-readers[external reader] tools

|https://github.com/apple/pkl-spring[apple/pkl-spring] |Spring Boot extension for configuring Boot apps with Pkl

|https://github.com/apple/pkl-swift[apple/pkl-swift] |Pkl bindings for the Swift programming language

|https://github.com/apple/pkl-swift-examples[apple/pkl-swift-examples] |Examples for using Pkl within Swift applications

|https://github.com/apple/pkl-vscode[apple/pkl-vscode] |Pkl language support for VS Code

|https://github.com/apple/pkl.tmbundle[apple/pkl.tmbundle] |TextMate bundle for Pkl

|https://github.com/apple/tree-sitter-pkl[apple/tree-sitter-pkl] |Tree-sitter parser for Pkl

|https://github.com/apple/rulespkl[apple/rulespkl] |Bazel build rules for Pkl |===

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