Install unable to find blosc2 dependency for Python 3.9

[jamesobutler]

@FabianIsensee The introduction of blosc2 and the version specified in 4cad0de does not have support for Python 3.9 even though nnUNet specifies it supports Python 3.9.

At minimum could you update this package to explicitly state the python_requires in setup.py so that pip can better manage dependencies? See https://github.com/pypa/sampleproject/blob/db5806e0a3204034c51b1c00dde7d5eb3fa2532e/setup.py#L123

See how this has impacted TotalSegmentator again as mentioned at wasserth/TotalSegmentator#385 (comment).

Example of dependency handling failing at time of install.

ERROR: Ignored the following versions that require a different python version: 2.6.0 Requires-Python <4,>=3.10; 2.6.1 Requires-Python <4,>=3.10; 2.6.2 Requires-Python <4,>=3.10; 2.7.0 Requires-Python <4,>=3.10; 2.7.1 Requires-Python <4,>=3.10; 3.0.0b1 Requires-Python >=3.10
ERROR: Could not find a version that satisfies the requirement blosc2>=3.0.0b4 (from versions: 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.1.10, 0.2.0, 0.3.0, 0.3.1, 0.3.2, 0.4.0, 0.4.1, 0.5.1, 0.5.2, 0.6.1, 0.6.2, 0.6.3, 0.6.4, 0.6.5, 0.6.6, 2.0.0, 2.1.0, 2.1.1, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7, 2.2.8, 2.2.9, 2.3.0, 2.3.1, 2.3.2, 2.4.0, 2.5.0, 2.5.1)
ERROR: No matching distribution found for blosc2>=3.0.0b4

[jamesobutler]

This issue came to my attention due to a report in the 3D Slicer Community forum in https://discourse.slicer.org/t/dental-segmantator/40519.

This impacts Python 3.9 users of packages that use nnUNet as acvl_utils is a listed dependency.

[VitoLin21]

I've encountered the same problem as well. For now, the only option is to roll back to version 0.2.1.

[jamesobutler]

@FabianIsensee Would you be able to address this major issue for Python 3.9 support? This impacts all packages that use nnUNet.