Hi,
many new features rely on library APIs and features that are only available in recent versions of SSSD dependencies. As a result, the code often needs #ifdefs and special branches in order to at least compile or run on RHEL5.
So far we've been doing nightly builds also for RHEL5 and fixing issues as we were finding them. But recently we are considering dropping support for RHEL5 -- it is causing some engineering effort and at the same time the audience is probably very limited. If you are running super-stable enterprise distribution, chances are you are not all that interested in the latest and possibly very unstable SSSD version.
The proposal would be to keep building and supporting the 1.9.x branch for RHEL5 and switch to using RHEL6 as the oldest supported release starting from the 1.10 upstream version. Of course we would still accept patches from any potential contributors.
Any objections against the plan?