xshape is no longer in development. This repository is a read-only archive.
To plot xarray data using a shapefile, I suggest simply dumping into geopandas:
# for some DataArray da indexed by a single coordinate,
# matching the values in a column of a shapefile
import geopandas as gpd
shp = gpd.read_file('some_shapefile').set_index(
column_name_with_values_matching_da_coordinate)
shp.assign(myvar=da.to_series()).plot('myvar')
If you'd like to take over development of xshape, feel free to reach out!