[paleolimbot]

The geoarrow-types package was introduced some time ago to replace the enums that were previously provided by Cython here. This replaces that interface with two functions: type_spec_to_arrow() and arrow_to_type_spec(). Currently the CVectorType is used as a backend but I'd like to remove that in a future release.

The idea is that geoarrow.types is the way to work with types and geoarrow-c is way to resolve that into a concrete type.

[codecov]

Codecov Report

❌ Patch coverage is 95.12195% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.72%. Comparing base (5943736) to head (908eb8a).

Files with missing lines	Patch %	Lines
python/geoarrow-c/src/geoarrow/c/types.py	94.59%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #182       +/-   ##
===========================================
+ Coverage   85.36%   96.72%   +11.35%     
===========================================
  Files          59        4       -55     
  Lines        9673       61     -9612     
  Branches      957        0      -957     
===========================================
- Hits         8257       59     -8198     
+ Misses       1335        2     -1333     
+ Partials       81        0       -81     

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