Created attachment 570092 [details] output of `emerge --info` Since upstream commit 4188dd7879a [1] the install phase fails with a sandbox violation. I came aware of the installation failure by a user in #gentoo who reported no sandbox failure, just missing the dri driver files however. Not sure if the difference is in my Gentoo configuration or him using Intel drivers and me using Radeon drivers. Bisecting narrowed it down to the aforementioned commit and reverting its change resulted in a successful installation for both that commit and the latest HEAD at the time of writing (db07f0554a). [1] https://cgit.freedesktop.org/mesa/mesa/commit/?id=4188dd7879a374b698d5f50c84cd26b2606f1ee3
Created attachment 570094 [details] build.log
god heavens I was like 4 hours checking for fixing my permissions. It happens for me too.
Patch in mesa bug 110211 at comment 6 to fix DESTDIR handling in install_megadrivers.py fixes it for me. https://bugs.freedesktop.org/show_bug.cgi?id=110211#c6
The GitLab patch works here. We can close this when it's merged.
Fixed with upstream commit ed96038e55b37501dae0be09287a6209a966eb85