Convert existing JSON to Pkl

[FranciscoSerrano]

I have lots of existing configs for projects, some are pretty long so I would love a quick way to convert from JSON to Pkl.

[kallekoo]

This would be an excellent feature. Dhall provides json-to-dhall, which not only enables converting existing configurations, but also editing structures via other means than a text editor, i.e. run dhall-to-json, make changes to JSON key paths, run json-to-dhall.

[StefMa]

There exist a json-schema to Pkl converter.
See https://github.com/apple/pkl-pantry/tree/main/packages/org.json_schema
Here are the docs. and this how to use it:

pkl eval package://pkg.pkl-lang.org/pkl-pantry/org.json_schema.contrib@<version>#/Generate.pkl \
  -m . \
  -p source="https://json.schemastore.org/github-action.json"

Its not json to Pkl, but at least something... 🤷

[bioball]

At the moment, converting JSON to Pkl requires writing a one-off converter. For an example of a converter, take a look at k8s.contrib.convert.

Generally, a converter will parse JSON into Pkl, and then use the Pcf renderer as a poor man's Pkl renderer, with some extra logic to add imports, or amends headers.

This is something that we want to improve, though. It should be possible to provide a generic command for this.