i had collisions upgrading x11-drm from the 20050502.ebuild to the 20060608 one. Unfortunately, i have lost the list of files. Solution: i suppose removing "collision-protect" from FEATURES would help some, but then removing the earlier version would remove the said files from the new version too? I simply unmerged the old version prior to installing the new one. BTW, i do not know why the package is slotted.
The current versions are not slotted any more, and it really doesn't make sense. I'd suggest to slotmove the remaining ones to slot 0 as well. # grep SLOT *.ebuild x11-drm-20050502.ebuild:SLOT="${KV}" x11-drm-20050807.ebuild:SLOT="0" x11-drm-20051028.ebuild:SLOT="0" x11-drm-20051223.ebuild:SLOT="0" x11-drm-20060608.ebuild:SLOT="0" x11-drm-4.3.0-r7.ebuild:SLOT="${KV}"
None of the versions in portage now have any SLOTting. Thanks.