the latest mesa version
in the Gentoo tree at the time of writing is 18.2.0-r1, which is what you should have on your RPi3 also, if the weekly genup is running correctly. You can check with "eix media-libs/mesa". 18.2.1 will no doubt make it into the tree shortly.
Alternatively, to update mesa to the latest version in the Gentoo tree manually:
Code: Select all
pi64 ~ # emaint sync --auto
pi64 ~ # emerge --ask --verbose --update --oneshot media-libs/mesa
Since it's just a minor version bump from 18.2.0 to 18.2.1, if you were feeling adventurous you could make your own overlay, copy the media-libs/mesa directory into it from /usr/portage, rename the mesa-18.2.0-r1.ebuild therein to mesa-18.2.1.ebuild (and delete all other ebuilds in that directory), recreate the manifest, and try emerging it. It'd probably
work. Or just wait a week or so till a Gentoo dev does it for you ^-^
PS release 1.3.0 of the gentoo-on-rpi3-64bit
image in final stages of testing now. Hoping to release in a week or so.