create separate environment files for python=3.11 (#7469)

* add new environment files for python 3.11

These should be deleted after all the remaining dependencies (cdms2,
numba, numbagg, sparse) support python 3.11.

* enable python 3.11

* use the special environment files for python 3.11

* officially support `python=3.11`

.github/workflows/ci.yaml

@@ -42,7 +42,7 @@ jobs:
       matrix:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
         # Bookend python versions
-        python-version: ["3.8", "3.10"]
+        python-version: ["3.8", "3.10", "3.11"]
         env: [""]
         include:
           # Minimum python version:
@@ -67,7 +67,13 @@ jobs:
         run: |
           echo "TODAY=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
 
-          if [[ ${{ matrix.os }} == windows* ]] ;
+          if [[ "${{matrix.python-version}}" == "3.11" ]]; then
+            if [[ ${{matrix.os}} == windows* ]]; then
+              echo "CONDA_ENV_FILE=ci/requirements/environment-windows-py311.yml" >> $GITHUB_ENV
+            else
+              echo "CONDA_ENV_FILE=ci/requirements/environment-py311.yml" >> $GITHUB_ENV
+            fi
+          elif [[ ${{ matrix.os }} == windows* ]] ;
           then
             echo "CONDA_ENV_FILE=ci/requirements/environment-windows.yml" >> $GITHUB_ENV
           elif [[ "${{ matrix.env }}" != "" ]] ;

ci/requirements/environment-py311.yml

@@ -0,0 +1,48 @@
+name: xarray-tests
+channels:
+  - conda-forge
+  - nodefaults
+dependencies:
+  - aiobotocore
+  - boto3
+  - bottleneck
+  - cartopy
+  # - cdms2
+  - cfgrib
+  - cftime
+  - dask-core
+  - distributed
+  - flox
+  - fsspec!=2021.7.0
+  - h5netcdf
+  - h5py
+  - hdf5
+  - hypothesis
+  - iris
+  - lxml  # Optional dep of pydap
+  - matplotlib-base
+  - nc-time-axis
+  - netcdf4
+  # - numba
+  # - numbagg
+  - numexpr
+  - numpy
+  - packaging
+  - pandas
+  - pint
+  - pip
+  - pooch
+  - pre-commit
+  - pseudonetcdf
+  - pydap
+  - pytest
+  - pytest-cov
+  - pytest-env
+  - pytest-xdist
+  - rasterio
+  - scipy
+  - seaborn
+  # - sparse
+  - toolz
+  - typing_extensions
+  - zarr

ci/requirements/environment-windows-py311.yml

@@ -0,0 +1,44 @@
+name: xarray-tests
+channels:
+  - conda-forge
+dependencies:
+  - boto3
+  - bottleneck
+  - cartopy
+  # - cdms2  # Not available on Windows
+  # - cfgrib  # Causes Python interpreter crash on Windows: https://github.com/pydata/xarray/pull/3340
+  - cftime
+  - dask-core
+  - distributed
+  - flox
+  - fsspec!=2021.7.0
+  - h5netcdf
+  - h5py
+  - hdf5
+  - hypothesis
+  - iris
+  - lxml  # Optional dep of pydap
+  - matplotlib-base
+  - nc-time-axis
+  - netcdf4
+  # - numba
+  # - numbagg
+  - numpy
+  - packaging
+  - pandas
+  - pint
+  - pip
+  - pre-commit
+  - pseudonetcdf
+  - pydap
+  - pytest
+  - pytest-cov
+  - pytest-env
+  - pytest-xdist
+  - rasterio
+  - scipy
+  - seaborn
+  # - sparse
+  - toolz
+  - typing_extensions
+  - zarr

setup.cfg

@@ -67,6 +67,7 @@ classifiers =
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
     Topic :: Scientific/Engineering
 
 [options]