Bug: Rust docs are failing to build for 2.16.x

[hadronzoo]

Describe the bug

2.16.0 appears to have introduced a GCC 13 requirement, which is breaking CI systems like the Rust Docs builder. Compiling a Rust project that depends on USearch 2.16.2 on a Github Action Runner using ubuntu-latest will also result in the same compilation failure.

Steps to reproduce

Compile a Rust project that uses USearch 2.16.0 on Ubuntu 22.04, which will fail with cc1plus: error: attribute 'avx512fp16' argument 'target' is unknown. Upgrading to GCC 13 or switching to Ubuntu 24.04 will fix the issue.

Expected behavior

Rust docs to build for new versions. Compilation to succeed on Ubuntu 22.04 without errors.

USearch version

v2.16.0

Operating System

Ubuntu 22.04

Hardware architecture

x86

Which interface are you using?

Other bindings

Contact Details

[email protected]

Are you open to being tagged as a contributor?

• I am open to being mentioned in the project .git history as a contributor

Is there an existing issue for this?

• I have searched the existing issues

Code of Conduct

• I agree to follow this project's Code of Conduct

[ashvardanian]

@hadronzoo, hi! Is there a way to override the compilation settings of the docs builder?

I assume it might be easier to fix this issue in SimSIMD first.

[hadronzoo]

It looks like docs.rs does have a way to update the build environment for a crate: https://forge.rust-lang.org/docs-rs/add-dependencies.html.

[ashvardanian]

@hadronzoo, sounds like a solution! Any chance you could open a PR? Might be best to start in the SimSIMD repo, as it's the source of the problems, I assum.

[hadronzoo]

Is there any way to detect the older platform to prevent this error? Unfortunately, any crate which depends upon USearch also fails to build docs. I've also opened a docs.rs issue.

[hadronzoo]

It looks like they only take 20.04 packages:

This should be the name of a package in the Ubuntu 20.04 Repositories.

I think that's going to block upgrading GCC.

[hadronzoo]

Another option is to make the simsimd feature optional instead of being enable by default.

[ashvardanian]

@hadronzoo, making it optional is a bad idea. It brings too much to the table and very few people remember to check the available options/flags/settings 🤔 Is there a way to control the minimum viable GLibC version or OS version?

[hadronzoo]

I think this is blocked on rust-lang/docs.rs#2672.