diff --git a/glasshouse-desktop/modules/zshell.nix b/glasshouse-desktop/modules/zshell.nix
index dc0f6f5..0b742e1 100644
--- a/glasshouse-desktop/modules/zshell.nix
+++ b/glasshouse-desktop/modules/zshell.nix
@@ -216,6 +216,7 @@ journal() {
 	[ ! -f "$HOME/loose_ends" ] && touch "$HOME/loose_ends" 
 	echo "$(date) - $1" >> "$HOME/loose_ends" 
 }
+invoke() { nix run nixpkgs#"$@" }
 
 		'';