Conditional install

Author: nicolas-chaulet

.github/workflows/tests.yaml

@@ -23,7 +23,13 @@ jobs:
           run: |
               python -m pip install --upgrade pip
               pip install numpy scikit-learn flake8 setuptools
+        - name: Install torch windows + linux
+          if: ${{matrix.os != 'macos-latest'}}
               pip install torch==1.5.0+cpu torchvision==0.6.0+cpu -f https://download.pytorch.org/whl/torch_stable.html
+        - name: Install torch macos
+          if: ${{matrix.os == 'macos-latest'}}
+            pip install torch
+            
         - name: Build package
           run: |
               python setup.py build_ext --inplace