Use overlay

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/installer/users/nick/configs/console/ssh/default.nix

@@ -2,12 +2,11 @@
 {
   config,
   inputs,
-  system,
+  pkgs,
   ...
 }:
 let
   hmConfig = config.home-manager.users.${user};
-  selfPkgs = inputs.self.packages.${system};
 in
 {
   home-manager.users.${user} = {
@@ -61,10 +60,14 @@ in
         };
       };
 
-      userKnownHostsFiles = with selfPkgs; [
-        ssh-known-hosts-github
-        ssh-known-hosts-gitlab
-      ];
+      userKnownHostsFile = builtins.concatStringsSep " " (
+        with pkgs.sshKnownHosts;
+        [
+          "${home}/.ssh/known_hosts"
+          github
+          gitlab
+        ]
+      );
     };
   };
 }