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

submitted 10 months ago* (last edited 10 months ago) by [email protected] to c/[email protected]

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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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[–] [email protected] 5 points 10 months ago (2 children)

I think inko is close to matching this description.

[–] [email protected] 1 points 10 months ago

I'll check it out; thanks!

[–] [email protected] 1 points 10 months ago

The biggest difference I see is allowing multiple mutable borrows, which would make a lot of things easier, but aside from that it sounds like it would have most of the same usability problems as Rust.

I'm also a bit put off when I see LLVM advertised as the primary compiler back-end these days. Pretty much guarantees slow builds.