This example shows how to build a pre-configured image for a Raspberry Pi 4 that you can flash to an SD card and run right away.
You may want to place your SSH key in the configuration to get access to the system. If you don't have Nix installed already, check out the Determinate Nix Installer.
The configuration uses the -aarch64 packages in order to enable cross-compiling from x86_64,
which is faster than emulating aarch64-linux for the Rust build. However, the rest of the build is
emulated so we can use the Nix binary cache. If you are on x86_64 and want to emulate an
aarch64-linux system, you need to enable binfmt for
that system. On NixOS this can be done via the boot.binfmt.emulatedSystems option.
boot.binfmt.emulatedSystems = [ "aarch64-linux" ];# Build the image
nix build .\#packages.aarch64-linux.sdImage
# Flash it to an SD card, replace sdX
sudo dd if=$(ls result/sd-image/nixos-sd-image-*-aarch64-linux.img) of=/dev/sdX bs=4MOnce the Pi is up and running, you can visit the Grafana instance on port 80 of the Pi. Log in with
the default credentials (username: admin, password: admin) and navigate to Dashboards ->
Grow in the menu.
You can make changes to the configuration and remotely rebuild the system, if you placed an SSH key in the configuration.
# Rebuild the configuration, replace the IP address
nixos-rebuild switch --flake .\#pi --target-host root@192.168.123.123