django: propagate better

modules/e11sync/default.nix

@@ -1,6 +1,7 @@
 e11sync-backend: {
   config,
   lib,
+  pkgs,
   ...
 }: {
   options.e11sync = with lib.types; {
@@ -9,6 +10,10 @@ e11sync-backend: {
   };
 
   config = lib.mkIf config.e11sync.enable {
-    environment.systemPackages = [e11sync-backend];
+    environment.systemPackages = [
+      pkgs.python3
+      pkgs.python3Packages.django_5
+      e11sync-backend
+    ];
   };
 }