This is available from the ubuntu repositories, so Gentoo should be able to, at the very least, deploy the ubuntu dpkg files. Reproducible: Always
An existing ebuild exists here: https://github.com/GenPi64/genpi64-overlay/blob/master/dev-embedded/rpi-imager/rpi-imager-1.6.ebuild
A few hints for the linked ebuild * MY_PV="1.6" is not needed. Read https://devmanual.gentoo.org/ebuild-writing/variables/ * Use EAPI=8 * run pkgcheck scan --net * remove empty 1st line