I think I found something

services/iceshrimp.nix

@@ -3,25 +3,13 @@
     iceshrimp = {
       enable = true; # Actually enable the module
       createDb = true;
-      configureNginx = {
-        enable = false; #?
-      };
+      configureNginx.enable = true; 
       stateDir = "/var/lib/iceshrimp";
       mediaDir = "/var/lib/iceshrimp/files";
       settings = {
         url = "https://mastodon.hermitcollective.net";
         maxNoteLength = 35124; # Length of the GPL3 + long;
         maxCaptionLength = 5000; # We did it HermitCollective!! We solved accesibility!
-	port = 2004;
-        ssl = true;
-      };
-    };
-    nginx.virtualHosts."mastodon.hermitcollective.net" = {
-      forceSSL = true;
-      enableACME = true;
-      locations."/" = {
-        proxyPass = "http://localhost:2004";
-        proxyWebsockets = true; # needed if you need to use WebSocket
       };
     };
   };