Hi, the postinst script certainly should not parse the lighttpd config (could be in any shell include...); you could argue the script shouldn't modify the existing owner.
Imho you should choose a different doc-root (/srv/www, ...) if you don't want to use system standards like a www-data user. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org