Merge pull request #170 from roocs/add_build_xarray_master

Add build against xarray master

.github/workflows/main.yml

@@ -30,12 +30,16 @@ jobs:
         include:
           - python-version: 3.6
             tox-env: py36
+            allowed_to_fail: false
           - python-version: 3.7
-            tox-env: py37
+            tox-env: py37-xarray
+            allowed_to_fail: true
           - python-version: 3.8
             tox-env: py38
+            allowed_to_fail: false
           - python-version: 3.9
             tox-env: py39
+            allowed_to_fail: false
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
@@ -46,6 +50,8 @@ jobs:
       run: pip install tox
     - name: Test with tox
       run: tox -e ${{ matrix.tox-env }}
+      continue-on-error: ${{ matrix.allowed_to_fail }}
+
 
   conda-xesmf:
     needs: black

tox.ini

@@ -1,6 +1,6 @@
 [tox]
-envlist = py{36,37,38,39}, black, py37-windows, macOS, docs
-requires = pip >= 20.0
+envlist = py{36,37,38,39}, black, py37-windows, macOS, docs, py37-xarray
+requires = pip >= 21.0
 opts = -v
 
 [travis]
@@ -38,7 +38,7 @@ download = True
 deps =
     coveralls
     pytest-cov
-    pip
 commands =
+    xarray: pip install git+https://github.com/pydata/xarray.git@master#egg=xarray
     pytest --cov tests
     - coveralls