fix?

Author: agramfort

.github/workflows/pythonpackage.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [2.7, 3.5, 3.6, 3.7]
+        python-version: [3.5, 3.6, 3.7, 3.8]
 
     steps:
     - uses: actions/checkout@v1
@@ -37,9 +37,11 @@ jobs:
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics        
+    - name: Install POT
+      run: |
+        pip install -e .
     - name: Run tests
       run: |
-        pip install .
         python -m pytest -v test/ ot/ --doctest-modules --ignore ot/gpu/ --cov=ot
     - name: Upload codecov
       run: |