[Enhancement] Swappable Packages (#216)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#216
Reviewed-by: liambrydon <lbry121@aucklanduni.ac.nz>
Reviewed-by: Tobias O <tobias.olenyi@envipath.com>

tests/views/test_package_views.py

@@ -5,14 +5,15 @@ from django.urls import reverse
 
 from epdb.logic import UserManager
 from epdb.models import (
-    Package,
-    UserPackagePermission,
-    Permission,
-    GroupPackagePermission,
     Group,
+    GroupPackagePermission,
     License,
+    Permission,
+    UserPackagePermission,
 )
 
+Package = s.GET_PACKAGE_MODEL()
+
 
 class PackageViewTest(TestCase):
     fixtures = ["test_fixtures.jsonl.gz"]