Build fails due to `modcholesky` dependency under rustc versions `>= 1.94.0`

[ToToSpl]

Describe the bug

Due to small change in compiler, modcholesky fails to build, thus this crate also fails

To Reproduce

Steps to reproduce the behavior:

1. update rustc to newest stable version
2. build crate

Expected behavior
Build fails due to error in modcholesky.

Fix for this is ready in PR since November 2025: argmin-rs/modcholesky#40

[alphaville]

Many thanks for reporting this, Jacek. I'll look into this. Let me know if you have any ideas on how to address this issue.

[ToToSpl]

Hi, I've seen that you have already reimplemented cholesky decomposition inside your crate so I guess that is chosen solution. Thank you for addressing this issue so quickly 😄 if I can help with anything please let me know.

[alphaville]

The issue is now fixed in #381. I just need to polish a few things and I'll merge it and release a new version. Indeed, I decided to write a custom implementation of the Cholesky factorisation. This factorization may be executed once at the initialisation of the algorithm (and only if you use AffineConstraint), so it is not something that needs to be super-optimized.

[alphaville]

The issue is now fixed. Make sure you're using the latest versions of OpEn and opengen (see here), which are available on pypi and crates.io