diff --git a/configurations.nix b/configurations.nix
index 6c2e8c5..8441d78 100644
--- a/configurations.nix
+++ b/configurations.nix
@@ -34,6 +34,7 @@ let
     ./modules/hosts.nix
     ./modules/network.nix
     ./modules/zsh.nix
+    ./modules/ssh-cursed.nix
 
 
     disko.nixosModules.disko
@@ -50,38 +51,41 @@ let
      , config
      , lib
      , ...
-     }: let
-       sopsFile = ./. + "/hosts/${config.networking.hostName}.yml";
-    in {
-      nix.nixPath = [
-        "home-manager=${home-manager}"
-        "nixpkgs=${pkgs.path}"
-        "nur=${nur}"
-      ];
-      # TODO: share nixpkgs for each machine to speed up local evaluation.
-      #nixpkgs.pkgs = self.inputs.nixpkgs.legacyPackages.${system};
+     }:
+      let
+        sopsFile = ./. + "/hosts/${config.networking.hostName}.yml";
+      in
+      {
+        nix.nixPath = [
+          "home-manager=${home-manager}"
+          "nixpkgs=${pkgs.path}"
+          "nur=${nur}"
+        ];
+        # TODO: share nixpkgs for each machine to speed up local evaluation.
+        #nixpkgs.pkgs = self.inputs.nixpkgs.legacyPackages.${system};
 
-      #users.withSops = builtins.pathExists sopsFile;
-      #sops.secrets = lib.mkIf (config.users.withSops) {
-      #  root-password-hash.neededForUsers = true;
-      #};
-      # sops.defaultSopsFile = lib.mkIf (builtins.pathExists sopsFile) sopsFile;
+        #users.withSops = builtins.pathExists sopsFile;
+        #sops.secrets = lib.mkIf (config.users.withSops) {
+        #  root-password-hash.neededForUsers = true;
+        #};
+        # sops.defaultSopsFile = lib.mkIf (builtins.pathExists sopsFile) sopsFile;
 
-      nix.extraOptions = ''
-        flake-registry = ${flake-registry}/flake-registry.json
-      '';
+        nix.extraOptions = ''
+          flake-registry = ${flake-registry}/flake-registry.json
+          builders-use-substitutes = true
+        '';
 
-      nix.registry = {
-        home-manager.flake = home-manager;
-        nixpkgs.flake = nixpkgs;
-        nur.flake = nur;
-      };
-      time.timeZone = "UTC";
+        nix.registry = {
+          home-manager.flake = home-manager;
+          nixpkgs.flake = nixpkgs;
+          nur.flake = nur;
+        };
+        time.timeZone = "UTC";
 
-      environment.systemPackages = [
-        pkgs.kitty.terminfo
-      ];
-    })
+        environment.systemPackages = [
+          pkgs.kitty.terminfo
+        ];
+      })
   ];
 in
 {
@@ -94,8 +98,8 @@ in
         ++ [
           ./hosts/epyc.nix
         ];
-      };
     };
+  };
 
   flake.colmena = {
     meta.nixpkgs = import nixpkgs {
@@ -107,6 +111,6 @@ in
         ++ [
           ./hosts/epyc.nix
         ];
-      };
+    };
   };
 }