[Nix-dev] NixOS won't boot anymore in certain generations, don't know why (Stage-1 error)

[Linus Arver]

Hello Matthias,

> When rebooting, I booted into my newest generation, which was 109 by
> this time. But I got an error in stage 1, telling me that my root
> partition couldn't be mounted as the device did not come up (LUKS
> encrypted SSD, root on /dev/sda2). It asked me
> 
>     "dm_mod" loaded?

FWIW, this is probably relevant:
http://lists.science.uu.nl/pipermail/nix-dev/2015-May/017198.html

. I was hit with that regression some weeks ago and had to cherry-pick
the bugfix commit from Nixpkgs.