Support cf-xarray 0.8.0 and newer.

.github/workflows/tests.yaml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v3

doc/whatsnew.rst

@@ -26,10 +26,16 @@ What's new
 v0.3.1 (unreleased)
 -------------------
 
+Breaking changes
+~~~~~~~~~~~~~~~~
+
+- Require Python 3.9 or newer (:pull:`78`).
+
 Bug fixes
 ~~~~~~~~~
 
-- Add missing optional dependency to dask_ (:issue:`73`, :pull:`76`).
+- Add missing optional dependency to dask_ (:issue:`74`, :pull:`76`).
+- Fix incompatibility with cf_xarray_ 0.8.0 (:issue:`73`, :pull:`78`).
 
 .. _dask: https://www.dask.org
 

hyoga/core/accessor.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2021-2022, Julien Seguinot (juseg.github.io)
+# Copyright (c) 2021-2024, Julien Seguinot (juseg.dev)
 # GNU General Public License v3.0+ (https://www.gnu.org/licenses/gpl-3.0.txt)
 
 """
@@ -179,8 +179,8 @@ def assign(self, **standard_variables):
                     f"{variable_name}_ instead", UserWarning)
                 variable_name += '_'
 
-            # link variable data to short name
-            variables[variable_name] = data
+            # link variable data to short name (skip coords, see #74)
+            variables[variable_name] = data.variable
 
         # assign new variables and return a new dataset
         return self._ds.assign(variables)

setup.cfg

@@ -22,14 +22,14 @@ classifiers =
 [options]
 packages = find:
 install_requires =
-    cf_xarray<0.8.0
+    cf_xarray
     geopandas
     matplotlib
     requests
     rioxarray
     scipy
     xarray
-python_requires = >=3.8
+python_requires = >=3.9
 
 [options.extras_require]
 docs =