projectatomic/rpm-ostree — pull request #69 by cgwalters (2014-12-05 03:33:16+00:00)
Title: postprocess: Write preserved groups to *both* /etc/group and /usr/lib/gr...

...oup

Otherwise, upgraded systems which have modified /etc/group (by e.g.
adding a human user), will actually see the group drop out with bad
consequences.

It's harmless to have it in both, /etc will override /usr.

Fixes #67