[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>

epdb/legacy_api.py

@@ -1,27 +1,30 @@
-from typing import List, Dict, Optional, Any
+from typing import Any, Dict, List, Optional
 
+from django.conf import settings as s
 from django.contrib.auth import get_user_model
 from django.http import HttpResponse
 from django.shortcuts import redirect
-from ninja import Router, Schema, Field, Form
+from ninja import Field, Form, Router, Schema
 
 from utilities.chem import FormatConverter
-from .logic import PackageManager, UserManager, SettingManager
+
+from .logic import PackageManager, SettingManager, UserManager
 from .models import (
     Compound,
     CompoundStructure,
-    Package,
+    Edge,
+    Node,
+    Pathway,
+    Reaction,
+    Rule,
+    Scenario,
+    SimpleAmbitRule,
     User,
     UserPackagePermission,
-    Rule,
-    Reaction,
-    Scenario,
-    Pathway,
-    Node,
-    Edge,
-    SimpleAmbitRule,
 )
 
+Package = s.GET_PACKAGE_MODEL()
+
 
 def _anonymous_or_real(request):
     if request.user.is_authenticated and not request.user.is_anonymous:
@@ -123,8 +126,7 @@ class SimpleEdge(SimpleObject):
 ################
 @router.post("/", response={200: SimpleUser, 403: Error})
 def login(request, loginusername: Form[str], loginpassword: Form[str]):
-    from django.contrib.auth import authenticate
-    from django.contrib.auth import login
+    from django.contrib.auth import authenticate, login
 
     email = User.objects.get(username=loginusername).email
     user = authenticate(username=email, password=loginpassword)