keep using the old uffd's pythonPackages, lol

flake.lock

@@ -625,6 +625,22 @@
         "type": "indirect"
       }
     },
+    "nixpkgs-oldstable": {
+      "locked": {
+        "lastModified": 1678761643,
+        "narHash": "sha256-tapXZvg6Kg5Fm7Fm6i+7cRC5Exp2lX7cgMrqsfrGhuc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c4aec3c021620d98861639946123214207e98344",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c4aec3c021620d98861639946123214207e98344",
+        "type": "github"
+      }
+    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1695318763,
@@ -776,6 +792,7 @@
         "nix-hexchen": "nix-hexchen",
         "nixos-mailserver": "nixos-mailserver",
         "nixpkgs": "nixpkgs",
+        "nixpkgs-oldstable": "nixpkgs-oldstable",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "sops-nix": "sops-nix",
         "tracktrain": "tracktrain"

flake.nix

@@ -9,6 +9,7 @@
 
     nixpkgs.url = "nixpkgs/nixos-23.05";
     nixpkgs-unstable.url = "nixpkgs/nixpkgs-unstable";
+    nixpkgs-oldstable.url = "github:/NixOS/nixpkgs?rev=c4aec3c021620d98861639946123214207e98344";
     nix-hexchen.url = "gitlab:hexchen/nixfiles";
     nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-23.05";
     tracktrain.url = "git+https://stuebinm.eu/git/tracktrain?ref=main";

pkgs/default.nix

@@ -3,6 +3,7 @@
 let
   pkgs = import sources.nixpkgs args;
   unstable = import sources.nixpkgs-unstable args;
+  oldstable = import sources.nixpkgs-oldstable args;
 
   callPackage = pkgs.lib.callPackageWith (pkgs // newpkgs);
 
@@ -34,7 +35,7 @@ let
       '';
     };
 
-    uffd = callPackage ./uffd {};
+    uffd = oldstable.callPackage ./uffd { };
 
     netbox = pkgs.netbox.override (super: rec {
       python3 = super.python3.override (oldpy: {
@@ -48,6 +49,9 @@ let
     });
 
     inherit (unstable) vaultwarden vaultwarden-vault;
+    inherit oldstable;
+
+    inherit (oldstable) uwsgi flask;
   };
 
 in pkgs.extend(_: _: newpkgs)