Nix-rebuild too slow on Raspberry Pi 3B+

Nebucatnetzer · December 25, 2024, 8:58pm

You don’t need an additional tool to deploy a configuration to another system.
nixos-rebuild can already do that on its own.

github.com

Nebucatnetzer/nixos/blob/0d5e346c6836c03dbd7c47cf0ce0ca2119d66b11/scripts/update-single-machine

#!/usr/bin/env bash

set -e

cd /home/andreas/.nixos

rsa_key="~/.nixos/secrets/ssh_keys/ansible/ansible.key"
export NIX_SSHOPTS="-t -i $rsa_key"

reboot=0

while getopts ":r" option; do
    case $option in
        r)
            reboot=1
            host=$2
            fqdn="$host.2li.local"
            echo "$fqdn with reboot"
            nixos-rebuild boot -j auto --use-remote-sudo --target-host $fqdn --flake ".#$host"
            ssh -i $rsa_key $fqdn 'sudo reboot'

This file has been truncated. show original

I’m using flakes but if you use man nixos-rebuild you can probably adapt it to your needs.