[ochoseis]

If Hetzner allows custom images, then this tool may help: https://github.com/nix-community/nixos-generators

Cloud-init can be clumsy to get going, but it’s possible.

[p_l]

I used kexec into nixos installer image from hetzner recovery, using nixos-generators to make the image.

1. Boot with hetzner recovery OS

2. Install Nix in it (not nixos!)

3. Install nixos-generators

4. Generate kexec-bundle image

5. run the result of 4 and continue installation from it.