Better practices

nixos-apps/paperless.ewanick.com.nix

@@ -1,11 +1,14 @@
 { pkgs, ... }:
-let baseUrl = "paperless.ewanick.com";
+let
+  baseUrl = "paperless.ewanick.com";
+  HOST = "localhost";
+  PORT = 28981;
 in
 {
   services.paperless = {
     enable = true;
-    address = "localhost";
-    port = 28981;
+    address = HOST;
+    port = PORT;
     passwordFile = "/run/keys/paperless-password";
   };
   systemd.services.paperless-scheduler.after = [ "var-lib-paperless.mount" ];
@@ -17,7 +20,7 @@ in
     virtualHosts = {
       "${baseUrl}" = {
         extraConfig = ''
-          reverse_proxy localhost:28981
+          reverse_proxy ${HOST}:${toString PORT}
         '';
       };
     };