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dkim=pass header.d=gmail.com header.s=20221208 header.b=pUo9Ss59; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of "help-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="help-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -6.31 X-Spam-Score: -6.31 X-Migadu-Queue-Id: 5567A8CDE X-TUID: +s3NdNpXaySw Is it possible in guix to try to boot the latest generation and then go down the list of previous generations and try to boot them until one of them works? My understanding is this is done by adding the following to /etc/default/grub: export GRUB_FALLBACK="1 2...{number of entries}" GRUB_DEFAULT=saved GRUB_SAVEDEFAULT=true