temporary fixed while waiting for https://github.com/NixOS/nixpkgs/pull/494510 to get fixed

modules/clan/paperless/default.nix

@@ -16,6 +16,18 @@
         ...
       }:
       {
+        nixpkgs.overlays = [
+          (final: prev: {
+            pythonPackagesExtensions = prev.pythonPackagesExtensions ++ [
+              (pyFinal: pyPrev: {
+                psycopg = pyPrev.psycopg.overrideAttrs (old: {
+                  disabledTests = old.disabledTests ++ [ "test_stats_connect" ];
+                });
+              })
+            ];
+          })
+        ];
+
         services.paperless = {
           enable = lib.mkDefault true;
         };