Try activating venv?

Author: Susan Vanderplas

.github/workflows/main.yml

@@ -59,6 +59,7 @@ jobs:
     - name: Reticulate checks
       shell: Rscript {0}
       run: |
+        system("source venv/bin/activate")
         devtools::session_info()
         reticulate::py_config()
         reticulate::use_virtualenv("${{ env.VIRTUAL_ENV }}")