trrntzip 0.9 is available, containing various improvements and bugfixes, most notably the addition of ZIP64 support (>2GB archive support, >4GB file support) and utf8 filename support. Resulting files are compatible with those created by the older versions.
There is no proper source tarball that I can find since 2005, but the version 0.9 snapshot tarball can be downloaded from sourceforge's SVN browser. I named my local copy trrntzip-0.9.tar.gz so that's how the ebuild refers to it.
An ebuild will be attached. Please review it as I most likely did things wrong. :)
Created attachment 304067 [details]
DESCRIPTION is too long. :)
How about this:
DESCRIPTION="An archiver that uses a modified ZIP format guaranteed to be invariant, given the same source files"