Use dotter

local/bin/ifinstalled

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# Some optional functions in LARBS require programs not installed by default. I
+# use this little script to check to see if a command exists and if it doesn't
+# it informs the user that they need that command to continue. This is used in
+# various other scripts for clarity's sake.
+
+for x in "$@"; do
+	if ! which "$x" >/dev/null 2>&1 && ! pacman -Qq "$x" >/dev/null 2>&1; then
+ 		notify-send "📦 $x" "must be installed for this function." && exit 1 ;
+	fi
+done