[Zope3-dev] zope.app.appsetup

[os]

Hello, Zope3-Developers!
I want use "ensureUtility" from "zope.app.appsetup.bootstrap" for easy
install my application(as site). But raise problem: my utilities always
install  to "top/++etc++site/default". 
For solve the problem i replacing
"/++etc++site/default" ==(del first slash)==> "++etc++site/default" in
function "getSiteManagerDefault". I run all zope-tests => OK. 
Q: Do you can this change in "zope.app.appsetup.bootstrap"? 
Thanks!