asShape is deprecated and buggy

[frafra]

Shapely has deprecated asShape and similar methods in version 1.8. There are some non-critical bugs that will not be fixed: shapely/shapely#1149 (comment)

It would be a good idea to replace asShape with shape.

The adapters to create geometry-like proxy objects with coordinates stored outside Shapely geometries are deprecated and will be removed in Shapely 2.0 (e.g. created using asShape()). They have little to no benefit compared to the normal geometry classes, as thus you can convert to your data to a normal geometry object instead. Use the shape() function instead to convert a GeoJSON-like dict to a Shapely geometry.
-- https://shapely.readthedocs.io/en/latest/migration.html

Note: ckanext-spatial does not pin to a specific version of shapely, so it could break when shapely 2.0 is released at the moment

ckanext-spatial/requirements.txt

Line 4 in 9831e74

Shapely>=1.2.13

[frafra]

Fixed with PR #276.