no_std compatibility. Macros output core and alloc, not std.

[Grinkers]

https://github.com/edn-rs/pico-edn/blob/86df5d1155b0177af400fb54ceaab67407157d88/pico-edn/src/lib.rs#L28-L42
example here

I don't think there's an easy way to write tests for this, as test binaries require std. This crate itself still requires std, so building the crate doesn't actually do anything.

@evaporei any ideas/recommendations?

[Grinkers]

Actually this is a pain. You can't extern crate alloc; multiple times, so can't inject it into macros. I'll leave this as a draft for now.

[Grinkers]

naomijub/edn-rs#158