Reboot into new config once?

I saw that grub has support for booting into a configuration once, by telling grub to save the config on boot https://www.gnu.org/software/grub/manual/legacy/Booting-once_002donly.html

It doesn’t seem like NixOS supports this though. Is there a way to set this up manually? I’d like to try a kernel patch on a remote VM…

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