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Who's working on a "smaller Rust"? (programming.dev)

submitted 10 months ago* (last edited 10 months ago) by BatmanAoD@programming.dev to c/rust@programming.dev

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Almost five years ago, Saoirse "boats" wrote "Notes on a smaller Rust", and a year after that, revisited the idea.

The basic idea is a language that is highly inspired by Rust but doesn't have the strict constraint of being a "systems" language in the vein of C and C++; in particular, it can have a nontrivial (or "thick") runtime and doesn't need to limit itself to "zero-cost" abstractions.

What languages are being designed that fit this description? I've seen a few scripting languages written in Rust on GitHub, but none of them have been very active. I also recently learned about Hylo, which does have some ideas that I think are promising, but it seems too syntactically alien to really be a "smaller Rust."

Edit to add: I think Graydon Hoare's post about language design choices he would have preferred for Rust also sheds some light on the kind of things a hypothetical "Rust-like but not Rust" language could do differently: https://graydon2.dreamwidth.org/307291.html

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[–] sebsch@discuss.tchncs.de 10 points 10 months ago (12 children)

If you use a garbage collector the whole borrow checker would not make any sense.

Do you want to have error handling and functional paradigms in go? I think you should start there and ask go Devs why their language is lacking such basic stuff.

[–] 80avin@programming.dev 3 points 10 months ago* (last edited 10 months ago) (8 children)

Not sure if this is what OP is seeking, but I would be fine to have borrow checker removed, replaced with Garbage collector like Go/Python in such a language.

To build prototypes, I don't want to fight with borrow checker and neither I care for efficiency much. But I do want the macro system, traits, lazily asynchronous runtime, cargo like package manager, easy build system, etc.

Rust has so many powerful features, but only because of borrow checker (IMO) we can't use it for rapid prototyping like Python. With that replaced, this subset of Rust would be something which can be a great contender to Python/Go, etc.

[–] Reacher@lemmy.world -2 points 10 months ago (1 children)

Then Rust is the wrong language for you. Use the right tool for the right job.

[–] 80avin@programming.dev 2 points 10 months ago

Yes, and that's what the post is about.

Saying that Rust is not the right tool for this job, what other tools exist which are similar to Rust but also do the job.

I don't have the answer though. Just came to add my thoughts.

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