diff --git a/pkgs/default.nix b/pkgs/default.nix
index 4cc0df3..2ffd414 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -219,6 +219,12 @@ pkgs: oldpkgs: {
     strip --strip-unneeded "$exe"
   '';
 
+  # Like writeScript but the first line is a shebang to dash
+  #
+  # Example:
+  #   writeDash "example" ''
+  #     echo hello world
+  #   ''
   writeDash = pkgs.makeScriptWriter {
     interpreter = "${pkgs.dash}/bin/dash";
   };