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tweag / nickel

Better configuration for less
https://nickel-lang.org/
MIT License
2.23k stars 85 forks source link

Opaque foreign values #1909

Closed jneem closed 4 weeks ago

jneem commented 2 months ago

This is some kind of baby step towards FFI: allow for opaque foreign values to be injected into nickel and copied around, but not otherwise interacted with or modified from within nickel.

This was a request from the keystone project, with some discussion on the discord.

Question: what should be payload of the opaque foreign values be? u64 might be sufficient: that gives a lot of values, and the user could "embed" richer data by maintaining a lookup table on their side. Maybe Box<dyn Any> is also a possibility?

yannham commented 4 weeks ago

I would close this, given #1931 has been merged. Foreign value are still quite bare-bone, but if there is demand for missing features, I think they would be better handled by new, focused issues.