pomnk@calculate ~ $ sudo emerge -pv1 mesa --autounmask-backtrack=y mesa

Local copy of remote index is up-to-date and will be used.

Local copy of remote index is up-to-date and will be used.

These are the packages that would be merged, in order:

Calculating dependencies... done!
Dependency resolution took 1.11 s.


The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by mesa (argument)
>=media-libs/mesa-23.2.1 -abi_x86_32