debianutils: fix build on darwin

pkgs/by-name/de/debianutils/package.nix

···
 , stdenv
 , fetchFromGitLab
 , autoreconfHook
+, perl
 , po4a
 }:
 
···
 
   nativeBuildInputs = [
     autoreconfHook
+    perl
     po4a
   ];