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nixos-anywhere and disko

This is an example repository for nixos-anywhere and disko.

Build installer ISO with passwordless SSH

nix-build '<nixpkgs/nixos>' -A config.system.build.isoImage -I nixos-config=iso.nix
ls result/iso/

Hardware Configuration

Boot the target machine into NixOS live ISO. Then execute the following, ideally while connected via SSH:

nixos-generate-config --no-filesystems --root /mnt
cat /mnt/etc/nixos/hardware-configuration.nix

Save the output to a new file in ./hardware-configs/. In ./flake.nix replace ./hardware-configs/yodaHP.nix with it.

Note: The hardware configuration should not contain any fileSystems.<name> options as these are generated based on your disko configuration.

Installation

To run the interactive vm test run:

nix --extra-experimental-features nix-command --extra-experimental-features flakes \
  run github:numtide/nixos-anywhere -- -f '.#mysystem' --vm-test

To install on remote target machine:

# yodaHP
nix --extra-experimental-features nix-command --extra-experimental-features flakes \
  run github:numtide/nixos-anywhere -- --flake '.#mysystem' -p 22 root@192.168.178.106

To install on remote target machine and print the SSH fingerprint of the new system:

# yodaHP
./install-with-ssh-fingerprint.sh 22 root@192.168.178.106

Updating dependencies

Recreate the lock file (i.e. update all inputs) and commit the new lock file:

nix --extra-experimental-features nix-command --extra-experimental-features flakes \
  flake update --commit-lock-file