Apple's release of a programming language for defining configurations

[or1k]

🥒 Pkl (pronounced Pickle) is an embedded language for configuration definition that provides (https://pkl-lang.org/blog/introducing-pkl.html) extensive support for templates and data validation. It can be used from the command line, integrated into the build pipeline, or embedded in applications. Pkl scales from small to large, from simple to complex, from ad hoc to repetitive configuration tasks.

The associated Pkl toolkit is written in Kotlin and published under the Apache license. Plugins for working with Pkl code are prepared for IntelliJ, Visual Studio Code and Neovim development environments. The LSP (Language Server Protocol) handler is expected to be published soon.

Pkl combines the properties of an easy-to-understand declarative language with advanced features typical for general-purpose languages. Pkl supports type annotations, classes, functions, computational expressions, conditions, and loops.