flake/hosts/ymir/configuration.nix

{
  config,
  pkgs,
  inputs,
  ...
}: {
  imports = [
    ./hardware-configuration.nix
    ../../modules
    inputs.vscode-server.nixosModules.default
    inputs.agenix.nixosModules.default
    inputs.home-manager.nixosModules.home-manager
  ];

  myModules = {
    blockYoutube = false;
    blockTwitter = true;
    blockBluesky = true;
    enableKDE = true;
    enableTailscale = true;
    # jellyfin is unnecessary for now
    enableJellyfin = true;
    enableAarch64Emulation = true;
  };

  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  networking.hostName = "ymir"; # Define your hostname.

  home-manager.useGlobalPkgs = true;
  home-manager.useUserPackages = true;
  home-manager.users.osbm = import ../../home/home.nix {
    inherit config pkgs;
  };

  # Enable networking
  networking.networkmanager.enable = true;

  networking.interfaces.enp3s0.wakeOnLan.enable = true;
  # The services doesn't actually work atm, define an additional service
  # see https://github.com/NixOS/nixpkgs/issues/91352
  systemd.services.wakeonlan = {
    description = "Reenable wake on lan every boot";
    after = ["network.target"];
    serviceConfig = {
      Type = "simple";
      RemainAfterExit = "true";
      ExecStart = "${pkgs.ethtool}/sbin/ethtool -s enp3s0 wol g";
    };
    wantedBy = ["default.target"];
  };

  hardware.nvidia-container-toolkit.enable = true;

  # hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;
  # Enable OpenGL

  programs.nix-required-mounts.enable = true;
  programs.nix-required-mounts.presets.nvidia-gpu.enable = true;
  # TODO: this ugly thing is necessary until this issue is resolved
  # https://github.com/NixOS/nixpkgs/issues/380601
  nix.settings.system-features = ["nixos-test" "benchmark" "big-parallel" "kvm" "gpu" "nvidia-gpu" "opengl" "cuda"];

  hardware.graphics = {
    enable = true;
  };

  # Load nvidia driver for Xorg and Wayland
  services.xserver.videoDrivers = ["nvidia"];

  hardware.nvidia = {
    # Modesetting is required.
    modesetting.enable = true;

    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
    # Enable this if you have graphical corruption issues or application crashes after waking
    # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead
    # of just the bare essentials.
    powerManagement.enable = false;

    # Fine-grained power management. Turns off GPU when not in use.
    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
    powerManagement.finegrained = false;

    # Use the NVidia open source kernel module (not to be confused with the
    # independent third-party "nouveau" open source driver).
    # Support is limited to the Turing and later architectures. Full list of
    # supported GPUs is at:
    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
    # Only available from driver 515.43.04+
    # Currently alpha-quality/buggy, so false is currently the recommended setting.
    open = false;

    # Enable the Nvidia settings menu,
    # accessible via `nvidia-settings`
    nvidiaSettings = true;

    # Optionally, you may need to select the appropriate driver version for your specific GPU.
    package = config.boot.kernelPackages.nvidiaPackages.beta;
  };

  # Enable sound with pipewire.
  services.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    # If you want to use JACK applications, uncomment this
    #jack.enable = true;

    # use the example session manager (no others are packaged yet so this is enabled by default,
    # no need to redefine it in your config for now)
    #media-session.enable = true;
  };

  systemd = {
    targets = {
      sleep = {
        enable = false;
        unitConfig.DefaultDependencies = "no";
      };
      suspend = {
        enable = false;
        unitConfig.DefaultDependencies = "no";
      };
      hibernate = {
        enable = false;
        unitConfig.DefaultDependencies = "no";
      };
      "hybrid-sleep" = {
        enable = false;
        unitConfig.DefaultDependencies = "no";
      };
    };
  };

  environment.systemPackages = with pkgs; [
    nvidia-container-toolkit
    inputs.agenix.packages.x86_64-linux.default
    inputs.osbm-nvim.packages.x86_64-linux.default
  ];

  services.ollama = {
    enable = true;
    acceleration = "cuda";
  };

  system.stateVersion = "25.05"; # great taboo of the nixos world
}