[python-package.yml] try to activate the conda base environment for py37 only (WIP, not sure it works)

Author: gph82

.github/workflows/python-package.yml

@@ -48,14 +48,14 @@ jobs:
     - name: If Python is 3.7 install dependencies in conda base environment
       if: ${{ matrix.python-version == '3.7' }}
       run: |
-        source activate base
-        python -m pip install --upgrade pip
-        pip install pytest pytest-cov pytest-xdist
+        conda run -n base python -m pip install --upgrade pip
+        conda run -n base pip install pytest pytest-cov pytest-xdist
       shell: bash
     - name: If Python is 3.7 install package in conda base environment
       if: ${{ matrix.python-version == '3.7' }}
       run: |
-        source activate base
+        conda init
+        conda activate base
         pip install --upgrade pip
         pip install --upgrade setuptools
         pip install -e .
@@ -64,7 +64,8 @@ jobs:
     - name: If Python is 3.7 test with pytest and coverage Linux 8 threads in conda base environment
       if: ${{ matrix.python-version == '3.7' }}
       run: |
-        source activate base
+        conda init
+        conda activate base
         echo -e '[run]\nomit = *dihedrals.py,*contact_matrix.py' > .coveragerc
         pytest -n 8 -vs --cov=./ --cov-report=xml --disable-warnings --cov-config=.coveragerc
       shell: bash