diff --git a/darwin.sh b/darwin.sh
index aafc01b..02dd215 100755
--- a/darwin.sh
+++ b/darwin.sh
@@ -1,2 +1,4 @@
-HERE="$(dirname $0)"
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p moreutils
+HERE="$(realpath $(dirname $0))"
 darwin-rebuild $@ -I "darwin-config=$HERE/darwin/default.nix"