Florian Hoertlehner schreef op wo 08-12-2021 om 19:26 [+0100]: > Do you know how I would do that? Do ai have to change th guix channel > Definition for that? Would this still allow me to roll back in case > something fails terribly? Or could it be that core-updates-frozen > will crash my Main machine all together? Man's thanks! The least risky method I know of, is to pull guix into a _separate_ profile , and use that guix to build the installation image: $ guix pull --profile=./guix-cuf --branch=core-updates-frozen [wait for the pull to finish] [alternatively, you could use 'guix time-machine'] $ ./guix-cuf/bin/guix system disk-image --target=aarch64-linux-gnu -e '(@ (gnu system install) rock64-installation-os)' That way, the core-updates-frozen guix will only be used for building the installation image, and nothing else. I don't see how that could crash your main machine, though I don't know if it will work on your rock64. Greetings, Maxime