I'm attaching an ebuild derived from dev-java/ant-1.5.4 that adds a patch to fix http://nagoya.apache.org/bugzilla/show_bug.cgi?id=14650 (RPM builds using the Ant <rpm> task were failing with the version of rpm that is currently stable in portage)
Created attachment 19152 [details] Updated ebuild
Created attachment 19154 [details] Updated ebuild Oops, I did a booboo when preparing the patch, and then blatantly didn't test before submitting. Sorry about that, here is the corrected version.
On portage tree as testing.