# Do not modify this file!  It was generated by ‘nixos-generate-config’
# and may be overwritten by future invocations.  Please make changes
# to /etc/nixos/configuration.nix instead.
{
  config,
  lib,
  pkgs,
  modulesPath,
  ...
}: {
  imports = [(modulesPath + "/installer/scan/not-detected.nix")];

  boot = {
    initrd.availableKernelModules = ["xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod"];

    # Enable early Nvidia kernel modesetting
    # https://wiki.archlinux.org/title/GDM#GDM_ignores_Wayland_and_uses_X.Org_by_default (not fixed by this)
    # https://wiki.archlinux.org/title/Kernel_mode_setting#Early_KMS_start
    initrd.kernelModules = ["nvidia" "nvidia_modeset" "nvidia_uvm" "nvidia_drm"]; # NVIDIA

    kernelModules = [
      "kvm-amd"
      "sg" # Blu-Ray drive
      "zenpower" # Sensors for Zen CPUs: https://github.com/NixOS/nixos-hardware/blob/master/common/cpu/amd/zenpower.nix
    ];

    blacklistedKernelModules = ["k10temp"]; # Disable in favor of zenpower

    # Enable AMD pstate
    # https://github.com/NixOS/nixos-hardware/blob/master/common/cpu/amd/pstate.nix
    kernelParams = ["amd_pstate=active"];

    # extraModprobeConfig = ''
    #   options iwlwifi 11n_disable=1 wd_disable=0
    # '';

    # Specific to used kernel (currently linux_zen)
    extraModulePackages = with config.boot.kernelPackages; [
      v4l2loopback
      zenpower
    ];
  };

  fileSystems = {
    "/" = {
      device = "/dev/disk/by-uuid/68bd46a0-e95c-4764-a006-44bd9975a6c2";
      fsType = "ext4";
      options = ["defaults" "rw" "relatime"];
    };

    "/boot/efi" = {
      device = "/dev/disk/by-uuid/36A9-3D74";
      fsType = "vfat";
    };

    "/home/christoph/Games" = {
      device = "/dev/disk/by-uuid/e57c1831-09d7-4046-9c62-086d3596f825";
      fsType = "ext4";
      options = ["defaults" "rw" "relatime"];
    };

    # If  the bg option is specified, a timeout or failure causes the mount(8) command
    # to fork a child which continues to attempt to mount the export.
    # The parent immediately returns with a zero exit code.
    # This is known as a "background" mount.

    # If the soft option is specified, then the NFS client fails an NFS request
    # after retrans retransmissions have been sent, causing the NFS client to return
    # an error to the calling application.
    # NB: A so-called "soft" timeout can cause silent data corruption in certain cases.
    # As such, use the soft option only when client responsiveness is more important than data integrity.
    # Using  NFS over TCP or increasing the value of the retrans option may mitigate
    # some of the risks of using the soft option.

    "/home/christoph/Movies" = {
      device = "192.168.86.20:/mnt/SG Exos Mirror 18TB/Movie";
      fsType = "nfs";
      options = ["defaults" "rw" "relatime" "_netdev" "bg" "soft"];
    };

    "/home/christoph/Shows" = {
      device = "192.168.86.20:/mnt/SG Exos Mirror 18TB/Show";
      fsType = "nfs";
      options = ["defaults" "rw" "relatime" "_netdev" "bg" "soft"];
    };

    "/home/christoph/Music" = {
      device = "192.168.86.20:/mnt/SG Exos Mirror 18TB/Music";
      fsType = "nfs";
      options = ["defaults" "rw" "relatime" "_netdev" "bg" "soft"];
    };
  };

  swapDevices = lib.mkForce [
    {
      device = "/var/swap";
      size = 1024 * 16; # Without hibernation 4.0 GB to 0.5 x RAM
    }
  ];

  hardware = {
    # Use all redistributable firmware (i.e. nonfree)
    enableAllFirmware = true;
    enableRedistributableFirmware = true;
    cpu.amd.updateMicrocode = true;
    bluetooth.enable = true;
    nvidia-container-toolkit.enable = true;

    nvidia = {
      package = config.boot.kernelPackages.nvidiaPackages.stable;
      # package = config.boot.kernelPackages.nvidiaPackages.beta;

      modesetting.enable = true; # Not officially supported by NVidia but needed for wayland
      open = true;
      nvidiaSettings = false; # Those are for x-server
    };

    # video.hidpi.enable = lib.mkDefault true; # No longer has any effect
    graphics = {
      enable = true;
      enable32Bit = true;

      # https://nixos.wiki/wiki/Accelerated_Video_Playback
      extraPackages = with pkgs; [
        vaapiVdpau # Taken from wiki, this is also part of nixos-hardware/common/gpu/nvidia
        libvdpau-va-gl # Taken from wiki

        # https://discourse.nixos.org/t/nvidia-open-breaks-hardware-acceleration/58770/3
        nvidia-vaapi-driver # Experimental, doesn't work with chromium
      ];
    };

    # sane.enable = true; # Scanning
    # xpadneo.enable = true; # Xbox Controller
  };

  environment.variables = {
    GBM_BACKEND = "nvidia-drm";
    __GLX_VENDOR_LIBRARY_NAME = "nvidia";

    # https://github.com/elFarto/nvidia-vaapi-driver?tab=readme-ov-file#environment-variables
    LIBVA_DRIVER_NAME = "nvidia";

    # https://wiki.hypr.land/Nvidia/#va-api-hardware-video-acceleration
    NVD_BACKEND = "direct"; # egl
  };

  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
}