Pkl: Safe & Maintainable Config for Apps & Infrastructure
summary
Pkl is a small declarative language that compiles to YAML and enforces compile-time type checks and constraints so invalid configs fail before deployment. It generates language bindings (Java/Kotlin) and demo shows a Spring Boot app loading generated config and returning it, plus a Kubernetes library produced from OpenAPI and a CloudFormation library that turns ~15 lines of Pkl into ~500 lines of YAML. Tooling includes IDE plugins, enums, templates, pure functions, and safe evaluation with Kubernetes & CloudFormation libraries and Spring Boot language binding and outputs multiple YAML files.
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