Quick migration guide to uncurried mode for PPX maintainers?

There’s no proper write up AFAIK but here are a few resources:

• ppx_spice migrates to support v11: Support uncurried on v11 by mununki · Pull Request #49 · green-labs/ppx_spice · GitHub
• rescript-relay migrates to support v11 (this is a bit simplified though because it doesn’t need to care about more than arity 1): Uncurried by zth · Pull Request #449 · zth/rescript-relay · GitHub

Also check these compiler files for more info about what has changed, and potential utils you can copy to your project to ease the transition:

• https://github.com/rescript-lang/rescript-compiler/blob/ae871c5dfb9def50a5d1a91a64caf748655b07aa/jscomp/ml/ast_uncurried.ml
• https://github.com/rescript-lang/rescript-compiler/blob/ae871c5dfb9def50a5d1a91a64caf748655b07aa/jscomp/ml/ast_uncurried_utils.ml