Done?

homeConfig/modules/corn.nix

@@ -0,0 +1,15 @@
+{ pkgs, lib, config, ... }:
+
+with lib;
+let 
+  cfg = config.modules.corn;
+
+in 
+{ options.modules.corn = { enable = mkEnableOption "corn"; };
+  config = mkIf cfg.enable {
+    home.packages = with pkgs; [
+      trezor-suite trezorctl 
+      electrum bisq-desktop
+    ];
+  };
+}