activate env

Author: dcherian

.github/workflows/ci.yaml

@@ -106,13 +106,16 @@ jobs:
         with:
           repository: 'pydata/xarray'
           fetch-depth: 0 # Fetch all history for all branches and tags.
-      - name: Set up conda environment
-        uses: mamba-org/provision-with-micromamba@de032af7fb3675649f3d4bbdda85178ba412ee41
+      - uses: conda-incubator/setup-miniconda@v2
         with:
-          environment-file: ci/requirements/environment.yml
-          environment-name: xarray-tests
-          extra-specs: |
-            python=${{ matrix.python-version }}
+          channels: conda-forge
+          channel-priority: strict
+          mamba-version: "*"
+          activate-environment: xarray-tests
+          auto-update-conda: false
+          python-version: "3.10"
+          use-only-tar-bz2: true
+
       - name: Install xarray
         run: |
           python -m pip install --no-deps .