Nixos stuck in boot loop , older generation unavailable

Help
1

I got this weird issue that happened randomly after few days i updated the nix system but not right after the update hence random .

nixos should be immutable so idk why it happened.

  1. I’m not able to boot. All the systemd services, sshd service , home manager service , oom killer service basically everything keeps failing on boot . Finally It keeps looping on display manager failed to start after every 1 min, assuming it’s related to nvidia I Can’t even access terminal with alt f2.

  2. I can’t access older configuration errors with init script /nix/store…… file not found reboot or ignore

  3. I tried to rebuild with live usb mounting the fs doing nixos-enter and nixos-rebuild on config but failed with doas authentication failed

Last option I have is to copy my data and reinstall everything but before that I post here for reasons and possible solutions.

2

If you’re able to, try to add rescue or emergency to the kernel command line using the bootloader. That could allow you to rescue your system.