#
# Per-system configuration for Valere.
#
# vim: et:ts=2:sw=2:
#
{
  config,
  lib,
  pkgs,
  deprekages,
  modulesPath,
  ...
}:
{
  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];

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

  # Networking.
  networking.hostName = "valere";
  networking.networkmanager.enable = true;
  networking.firewall.enable = false;

  # This is a local machine, rather than our typical network-accesed ones.
  # Run an ssh-agent locally.
  programs.ssh.startAgent = true;

  # Provide support for our RGB controller.
  # Note on valere in particular this requires our overlay.
  environment.systemPackages = [
    deprekages.humanfx

		# NVIDIA tools.
    pkgs.nvitop
  ];

  #
  # Niri configuration for our monitors.
  #
  home-manager.users.deprekated.programs.niri.settings = {
    outputs."eDP-1".scale = 1.5;
  };

  # Override stylix font sizes.
  stylix.fonts.sizes.desktop = lib.mkForce 18;

  #
  # Intel+NVIDIA / prime setup.
  #

  services.xserver.videoDrivers = ["nvidia"];

	# Set up the NVIDIA half of the GPU setup.
  system.nixos.tags = ["NVIDIA" "Intel"];
  hardware.nvidia = {
    modesetting.enable = true;

    # Prefer the open NVIDIA driver.
    open = true;

    # Enable the nvidia-settings command.
    nvidiaSettings = true;

 		# Offloading setup: use GPU when asked for by command, and not otherwise.
		prime = {
			sync.enable = true;

			# Specify how to find our GPUs.
			intelBusId = "PCI:0:2:0";
			nvidiaBusId = "PCI:1:0:0";
		};

  };

	# Provide a way to disable the NVIDIA GPU entirely,
	# for points when traveling where we don't want to burn power.
  specialisation.lowpower.configuration = {
		system.nixos.tags = lib.mkForce ["Intel"];

		# Disable the NVIDIA GPU.
		hardware.nvidiaOptimus.disable = true;

		# These don't actually do anything, but they make introspecting
		# the configuration a bit nicer.
		hardware.nvidia.modesetting.enable = lib.mkForce false;
		hardware.nvidia.prime.sync.enable = lib.mkForce false;
  };

	# Provide memtest86, since that's nice.
  boot.loader.systemd-boot.memtest86.enable = true;

  #
  # Hardware config.
  #

  # Use the latest kernel, until the Dell stuff makes it into
  # more mainline kernels.~
  boot.kernelPackages = pkgs.linuxPackages_latest;

  boot.initrd.availableKernelModules = [
    "xhci_pci"
    "thunderbolt"
    "vmd"
    "nvme"
    "usbhid"
    "usb_storage"
    "sd_mod"
  ];
  boot.initrd.kernelModules = [ ];

  # Support virtualization, thunderbolt, and poking the APCI directly. >.>
  boot.kernelModules = [
    "thunderbolt"
    "acpi_call"
  ];
  boot.extraModulePackages = [ config.boot.kernelPackages.acpi_call ];

  # Support thunderbolt.
  services.hardware.bolt.enable = true;

  fileSystems."/" = {
    device = "/dev/disk/by-uuid/bb880b80-992f-4e56-bb80-c5c4df0ddd72";
    fsType = "ext4";
  };

  fileSystems."/boot" = {
    device = "/dev/disk/by-uuid/5B37-C691";
    fsType = "vfat";
    options = [
      "fmask=0022"
      "dmask=0022"
    ];
  };

  swapDevices = [ { device = "/dev/disk/by-uuid/50f20263-9632-439d-b57d-b9ee8f13d62b"; } ];

  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
  # (the default) this is the recommended approach. When using systemd-networkd it's
  # still possible to use this option, but it's recommended to use it in conjunction
  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
  networking.useDHCP = lib.mkDefault true;
  # networking.interfaces.wlp0s20f3.useDHCP = lib.mkDefault true;

  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
}
