1.9 KiB
1.9 KiB
Building a NixOS SD image for a Raspberry Pi Zero 2 w
1. Update zero2w.nix
In particular, don't forget:
- to configure your wifi
- to add an admin user able to connect through ssh
2. Build the image
- On arm processor
nix build -L .#nixosConfigurations.zero2w.config.system.build.sdImage
- On x86 processor :
add this to your config :
boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
and then run :
nix build -L .#nixosConfigurations.zero2w.config.system.build.sdImage --system aarch64-linux
3. Copy the image in your sd card
DEVICE=/dev/disk5 # Whatever your sd card reader is
sudo dd if=result/sd-image/zero2.img of=$DEVICE bs=1M conv=fsync status=progress
4. Boot your Zero
5. From another machine, rebuild the system:
ZERO2_IP=<the-zero2-ip>
SSH_USER=<the-admin-user-in-the-pi>
nix run github:serokell/deploy-rs .#zero2w -- --ssh-user $SSH_USER --hostname $ZERO2_IP
Notes
- The Zero 2 doesn't have enough RAM to build itself. An initial lead was to create a swap partition, but it turns out it was a bad idea, as it would have decreased the sd card lifetime (sd cards don't like many write operations). A
zram
swap is not big enough to work. Hence the use ofdeploy-rs
.- Note that
nixos-rebuild --target-host
would work instead of usingdeploy-rs
. but asnixos-rebuild
is not available on Darwin, I'm usingdeploy-rs
that works both on NixOS and Darwin.
- Note that
- I still couldn't find a way to use
boot.kernelPackages = pkgs.linuxKernel.packages.linux_rpi3
. - the
sdImage.extraFirmwareConfig
option is not ideal as it cannot updateconfig.txt
after it is created in the sd image.
See also
mine
update
nix run github:serokell/deploy-rs .#zero2w -- --ssh-user penwing --hostname 192.168.1.33