(fix): upper bound zarr at runtime (and in docs + benchmark)

[ilan-gold]

I would make a release just for this.

• Closes #
• Tests added
• Release note added (or unnecessary)

[ilan-gold]

@flying-sheep Is there a way to cross reference old versions of docs? Or are we just going to have to take it on the chin here until we upgrade zarr?

Right, the intersphinx mapping is not automatic

[flying-sheep]

maybe we should add a zarr extra that people can rely on instead of having to maintain their own pin.

then they can just specify anndata[zarr] and get the newest supported version

[ilan-gold]

This struck me as a minor version change. I think this solution also would be necessary anyway to give a helpful message.

[flying-sheep]

I think the raise RuntimeError you added is the most helpful thing for users here. Although maybe it should be an ImportError, it’s not like users can make a change to the runtime parameters to fix it.

[ilan-gold]

The thought crossed my mind, I can update

[ilan-gold]

Also another reason not to add a dep now is that I have this slated for 0.12 anyway with the xarray object.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 84.63%. Comparing base (a8c62e8) to head (3a163f3).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/anndata/compat/__init__.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1819      +/-   ##
==========================================
- Coverage   87.10%   84.63%   -2.48%     
==========================================
  Files          40       40              
  Lines        6135     6138       +3     
==========================================
- Hits         5344     5195     -149     
- Misses        791      943     +152     

Files with missing lines	Coverage Δ
src/anndata/compat/__init__.py	80.97% <66.66%> (-3.87%)	⬇️

... and 7 files with indirect coverage changes