2024-05-24 18:03:22 +00:00
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{ config, lib, pkgs, ... }:
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{
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imports = [
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# Include the results of the hardware scan.
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./hardware-configuration.nix
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# Needed to continue SD image initialization after installer removes its own unit.
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./sd-image-init.nix
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];
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# Create a swap file. Raspberry pi 3B has only 1G of ram, and nixos-rebuild takes a *lot* of ram to evaluate
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# the nixpgks store (someone even recommended me to evaluate the store on my laptop, either via binfmt to
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# emulate Aarch64 or to use the rasp as a remote builder to keep the evaluation locally). When the system runs
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# out of RAM, it freezes.
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swapDevices = [
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{
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device = "/swapfile";
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# create a smaller file on qemu, just to test
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size = if (config ? virtualisation.qemu) then 127 else 2048;
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}
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];
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# Use the extlinux boot loader. (NixOS wants to enable GRUB by default)
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boot.loader.grub.enable = false;
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# Enables the generation of /boot/extlinux/extlinux.conf
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boot.loader.generic-extlinux-compatible.enable = true;
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boot.consoleLogLevel = 7;
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# Apparently also needed for some parts of the pi to work.
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hardware.enableRedistributableFirmware = true;
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# Otherwise the hdmi disconnects during the boot and reconnect at the end
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# looks like it is still not enough...
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# Don't enable it with qemu
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2024-06-02 19:22:07 +00:00
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boot.initrd.kernelModules = lib.mkIf (!(config ? virtualisation.qemu)) [ "vc4" "bcm2835_dma" "i2c_bcm2835" "ahci" ];
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2024-05-24 18:03:22 +00:00
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# K900 said that I should always try to stay as much as possible on mainline… which makes sense.
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# K900 also recommended to use kernel 6.0.2 (default is 5.*),
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boot.kernelPackages = pkgs.linuxPackages_latest;
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# also get errors on rpi3 (can't boot, kernel error) and it will not work in qemu since it's arm
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# boot.kernelPackages = pkgs.linuxPackages_rpi3;
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# https://github.com/NixOS/nixpkgs/issues/154163#issuecomment-1008362877
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nixpkgs.overlays = [
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2024-06-02 19:22:07 +00:00
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(_final: super: {
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2024-05-24 18:03:22 +00:00
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makeModulesClosure = x:
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super.makeModulesClosure (x // { allowMissing = true; });
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})
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];
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boot.kernelParams = [ "cma=32M" "console=tty0,115200n8" ];
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users.users.nixos = {
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isNormalUser = true;
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extraGroups = [ "wheel" "networkmanager" "video" ];
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initialPassword = "nixos";
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};
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services.mingetty.autologinUser = "nixos";
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# The installer starts with a "nixos" user to allow installation, so add the
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# SSH key to that user. Note that the key is, at the time of writing, put in
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# `/etc/ssh/authorized_keys.d`
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users.extraUsers.nixos.openssh.authorizedKeys.keys = [
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"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGSNy/vMr2Zk9pvfjQnxiU9F8CGQJwCiXDxPecKG9/q+ Greg Burd <greg@burd.me> - 2023-01-23"
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];
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# Enable OpenSSH out of the box.
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services.sshd.enable = true;
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# Use a default root SSH login.
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services.openssh.settings.PermitRootLogin = "yes";
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users.users.root = {
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initialHashedPassword = "$6$xO61wiVZ3tg9Wryx$lBTmF6N7ed7gpeJdVK8vzExdDecDWiLAvYxNazW72LQST3iMaYQck071V9ACCMgeFrjSXt7G/w5UjlpOF1F6q.";
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openssh.authorizedKeys.keys = [
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"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGSNy/vMr2Zk9pvfjQnxiU9F8CGQJwCiXDxPecKG9/q+ Greg Burd <greg@burd.me> - 2023-01-23"
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];
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};
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networking.wireless.enable = false;
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# The global useDHCP flag is deprecated, therefore explicitly set to false here.
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# Per-interface useDHCP will be mandatory in the future, so this generated config
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# replicates the default behaviour.
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networking.useDHCP = false;
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networking.interfaces.eth0.useDHCP = true;
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networking.interfaces.wlan0.useDHCP = true;
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# NTP time sync.
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services.timesyncd.enable = true;
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# This value determines the NixOS release from which the default
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# settings for stateful data, like file locations and database versions
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# on your system were taken. It‘s perfectly fine and recommended to leave
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# this value at the release version of the first install of this system.
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# Before changing this value read the documentation for this option
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# (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
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system.stateVersion = "23.05"; # Did you read the comment?
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}
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