Matthias Schmidtblaicher

New CI failure is due to missing `libblas >=0 *mkl` when solving environment on macos-latest - Py3.12. Same failure occurs on main.

I added a separate environment for macos without the `libblas >=0 *mkl` dependency. This has the additional benefit that it is more prominent to Mac users who might miss the...

Nightly failures (or at least most of them) should because of shorthand `scipy.sparse.*_matrix.A` in the simulations, which is deprecated in future scipy versions, see also [here](https://stackoverflow.com/a/26577144/23885214). Will replace them on...

The [remaining 34 failures on the nightly builds](https://github.com/Quantco/glum/actions/runs/8858684454/job/24327623034) are due to incompatibilities between upstream packages and pre-release versions of other dependencies, namely: - tabmat calling `scipy.sparse.*_matrix.A`, which will be deprecated...

> Note that glum defaults to a regularised GLM ([ref](https://github.com/Quantco/glum/blob/d4b7b5d37f0bb6571fa1293740aabfade1f39e28/src/glum/_glm.py#L3040)). Should we change the default alpha in version 3 to `alpha=0`?

Different floating values on different systems from about 16 digits on should be expected, see, e.g., [here](https://softwareengineering.stackexchange.com/a/412052).