[algesten]

> A huge chain of dependencies. Security issues aside, I prefer my embedded code to be lean and clean.

Where does your limit go for that? I wrote a eurorack modular embedded thing on Teensy 4.0 (imxrt) in Rust this year. I just inspected the dep tree, it's 38 crates, with 1 being my own.

https://gist.github.com/algesten/9617fc795f2fc94009f1ed311b1...

It was a joy to write this in Rust, I look forward to my next project. This was done with "stable" (not nightly).

[formerly_proven]

How does cortex-m v0.6.7 manage to depend on cortex-m v0.7.3?

[eldruin]

That's a way to avoid complicated coordinated upgrades across the ecosystem if certain conditions are met. It's called the "semver-trick" [1].

[1]: https://github.com/dtolnay/semver-trick

[pornel]

Cargo has its own interpretation of semver: first non-zero number is the major version, so v0.6 is like v6.0.0 and v0.7 is like v7.0.0. Then each major version is treated as a separate crate, as if it was cortex-m-v6 and cortex-m-v7.