[gentoo-dev] emerge issue when package does not unmerge correctly

[Dan Armak]

Hi all,

Sometimes an old ebuild cannot be unmerged. This happened to me with the 
recent eclass changes - the old inheriting ebuilds already installed no 
longer worked. (I have since provided backward compatibility.)

This creates a problem: when an older ebuild of the same revision is 
automatically unmerged, if unmerging fails, the old CONTENTS stays in 
/var/db/pkg, but the new files have already been merged into the live 
filesystem. So you are left with a CONTENTS not corresponding to the files 
actually installed (since they all have at least different mtimes).

I think the correct thing here would be to overwrite the old /var/db/pkg 
record with the new one in any case, to ensure that it matches the installed 
files.

-- 

Dan Armak
Gentoo Linux Developer, Desktop Team
Matan, Israel