trying initializing the shell earlier in the GHA yml file

.github/workflows/python-package.yml

@@ -9,6 +9,10 @@ on:
   pull_request:
     branches: [ "master" ]
 
+defaults:
+  run:
+    shell: bash -l {0}
+
 jobs:
   build:
 
@@ -23,8 +27,9 @@ jobs:
     - name: Install conda environment
       uses: mamba-org/setup-micromamba@v1
       with:
-        init-shell: bash
         environment-file: test_env.yml
+        init-shell: >-
+          bash
         create-args: >-
           python=${{ matrix.python-version }}