Fixup pythonpublish.yml

Author: Matthias Koeppe

.github/workflows/pythonpublish.yml

@@ -9,18 +9,23 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v1
-    - name: Set up Python
-      uses: actions/setup-python@v1
+    - uses: goanpeca/setup-miniconda@v1
       with:
-        python-version: '3.x'
+        auto-update-conda: true
+        activate-environment: sagecoin
+        environment-file: environment.yml
+        python-version: 3.7
+        auto-activate-base: false
     - name: Install dependencies
+      shell: bash -l {0}
       run: |
         python -m pip install --upgrade pip
         pip install setuptools twine
     - name: Build and publish
       env:
         TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
         TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+      shell: bash -l {0}
       run: |
-        python setup.py sdist
+        python3 setup.py sdist
         twine upload dist/*