Experimental

Pkl configuration format (>= v0.17)

Thanks to the rpkl crate, we have experimental support for the Pkl configuration language. Pkl is a dynamic and programmable configuration format built and maintained by Apple.

port = 3000
secure = true
allowedHosts = List(".localhost")

Pkl support can be enabled with the pkl Cargo feature.

Caveats

Unlike our other static formats, Pkl requires the following to work correctly:

• The pkl binary must exist on PATH. This requires every user to install Pkl onto their machine.
• Pkl parses local file system paths only.
  • Passing source code directly to ConfigLoader is NOT supported.
  • Reading configuration from URLs is NOT supported, but can be worked around by implementing a custom file-based Cacher.

Known issues

• The rpkl crate is relatively new and may be buggy or have missing/incomplete functionality.
• When parsing fails and a code snippet is rendered in the terminal using miette, the line/column offset may not be accurate.