First time using conda-incubator/setup-miniconda@v2 action, please bear with me

Author: eriknw

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        python-version: [3.7, 3.8, 3.9]
+        python-version: [3.7] #, 3.8, 3.9]
     steps:
     - name: Checkout
       uses: actions/checkout@v2
@@ -22,11 +22,10 @@ jobs:
         auto-update-conda: true
         python-version: ${{ matrix.python-version }}
         channels: conda-forge
-    - name: Build
       run: |
         conda info
         conda list
-        conda install -c conda-forge cffi cython numpy graphblas pytest coverage black flake8  # TODO: environment.yml
+        conda install -c conda-forge cffi cython numpy graphblas=4.0.3 pytest coverage black flake8  # TODO: environment.yml
         python setup.py build_ext --inplace
         python setup.py develop
     - name: Test