Usecase: elmsl (Elm to Rust serverless apps)

[tamagottschi]

Hi, I'm looking forward to use parts of your libraries (AST, type infer, optimize) to implement my elmsl compiler (elm serverless), which will be implemented in rust and create rust code.

[Janiczek]

@tamagottschi what I read from this is that in addition to the AST, type inference and optimizations being exposed it would be good to have some kind of encoder / serializer for the AST, possibly to JSON? Would your tool consume that, or rather the resulting Elm source code? (In that case we would need an Elm emitter 😅 which is a good idea anyway probably.)

[Janiczek]

After talking in person at Elm Europe 2019, I understand this as:

• parts of elm-in-elm would be reimplemented in elmsl in Rust itself (the parts that are missing in elmsl) - elm-in-elm would be used as a reference implementation to look into; not used directly
• in future elm-in-elm would compile itself into Rust :question: I'm a bit fuzzy about this one. (That would need Stage.Emit.Rust.emitExpr etc which doesn't exist right now)

So the answer to the JSON question is: no that is not needed.