nix-config/systems/x86_64-linux/navis/default.nix

{
  pkgs,
  config,
  inputs,
  lib,
  ...
}:
with lib // pkgs // inputs; {
  imports = [./hardware.nix];

  security = {
    rtkit.enable = true;

    pam = {
      services.greetd.enableGnomeKeyring = true;

      loginLimits = [
        {
          domain = "*";
          item = "nofile";
          type = "-";
          value = "32768";
        }
        {
          domain = "*";
          item = "memlock";
          type = "-";
          value = "32768";
        }
      ];
    };

    sudo.wheelNeedsPassword = false;
  };

  console.catppuccin.enable = true;

  systemd.tmpfiles.rules = [
    "f /dev/shm/looking-glass 0660 marshall qemu-libvirtd -"
  ];

  systemd.user.extraConfig = let
    path = lib.concatStringsSep ":" [
      "/run/wrappers/bin"
      "/etc/profiles/per-user/%u/bin"
      "/nix/var/nix/profiles/default/bin"
      "/run/current-system/sw/bin"
    ];
  in ''
    DefaultEnvironment="PATH=${path}"
  '';

  age = {
    secrets.passwd.file = /etc/secrets/passwd.age;
    identityPaths = ["/persist/root/.ssh/id_ed25519"];
  };

  chaotic = {
    scx = {
      enable = true;
      scheduler = "scx_rusty";
    };

    steam.extraCompatPackages = [
      luxtorpeda
      proton-ge-custom
    ];
  };

  virtualisation = {
    spiceUSBRedirection.enable = true;

    libvirtd = {
      enable = true;

      onBoot = "ignore";
      onShutdown = "shutdown";

      qemu = {
        package = qemu_kvm;
        swtpm.enable = true;
        runAsRoot = false;
        ovmf.enable = true;
        ovmf.packages = [OVMFFull.fd];
      };
    };

    podman = {
      enable = true;
      dockerCompat = true;
      dockerSocket.enable = true;
    };
  };

  environment = {
    sessionVariables = {
      BROWSER = "firefox-nightly";
      DIRENV_WARN_TIMEOUT = "100s";
      EDITOR = "nvim";
      NIXOS_OZONE_WL = "1";
      TERMINAL = "wezterm";
    };

    systemPackages = [
      agenix.packages.${system}.default
      gnome.nautilus
      internal.lightly-boehs-qt6
      looking-glass-client
      snowfallorg.flake
      sound-theme-freedesktop
      virtio-win
      winetricks
      wineWowPackages.staging
      xclip
      yt-dlp
    ];

    persistence."/persist" = {
      hideMounts = true;
      directories = [
        "/etc/mullvad-vpn"
        "/etc/NetworkManager"
        "/etc/secrets"
        "/etc/ssh"
        "/root/.ssh"
        "/var/lib/bluetooth"
        "/var/lib/libvirt"
        "/var/lib/nixos"
        "/var/lib/systemd/coredump"
      ];
      files = ["/etc/machine-id"];
    };
  };

  boot = {
    blacklistedKernelModules = ["nouveau"];
    kernelPackages = linuxPackages_cachyos;
    supportedFilesystems = ["btrfs" "ntfs"];

    initrd.systemd = {
      enable = true;
      emergencyAccess = true; # No password needed because of LUKS
    };

    plymouth = {
      enable = true;
      catppuccin.enable = true;
    };

    extraModprobeConfig =
      "options nvidia "
      + concatStringsSep " " [
        "NVreg_UsePageAttributeTable=1"
        "NVreg_EnablePCIeGen3=1"
        "NVreg_RegistryDwords=RMUseSwI2c=0x01;RMI2cSpeed=100"
      ];

    kernelParams = [
      "intel_iommu=on"
      "iommu=pt"
      "kvm.ignore_msrs=1"
      "modprobe.blacklist=nouveau"
    ];

    loader = {
      efi.canTouchEfiVariables = true;

      systemd-boot = {
        enable = true;
        configurationLimit = 20;
      };
    };
  };

  nix = let
    mappedRegistry = pipe inputs [
      (filterAttrs (_: isType "flake"))
      (mapAttrs (_: flake: {inherit flake;}))
      (x: x // {nixpkgs.flake = nixpkgs;})
    ];
  in {
    package = mkForce nixSuper;
    registry = mappedRegistry // optionalAttrs (config.nix.package == nixSuper) {default = mappedRegistry.nixpkgs;};
    nixPath = mapAttrsToList (key: _: "${key}=flake:${key}") config.nix.registry;

    daemonCPUSchedPolicy = "batch";
    daemonIOSchedClass = "idle";
    daemonIOSchedPriority = 7;

    gc = {
      automatic = true;
      dates = "Sat *-*-* 03:00";
      options = "--delete-older-than 30d";
    };

    optimise = {
      automatic = true;
      dates = ["04:00"];
    };

    settings = {
      auto-optimise-store = true;
      builders-use-substitutes = true;
      flake-registry = "/etc/nix/registry.json";
      keep-going = true;
      log-lines = 30;
      max-jobs = "auto";
      sandbox-fallback = false;
      sandbox = true;
      system-features = ["nixos-test" "kvm" "recursive-nix" "big-parallel"];
      use-cgroups = true;
      use-xdg-base-directories = true;
      warn-dirty = false;

      allowed-users = ["root" "@wheel" "nix-builder"];
      trusted-users = ["root" "@wheel" "nix-builder"];

      min-free = "${toString (5 * 1024 * 1024 * 1024)}";
      max-free = "${toString (10 * 1024 * 1024 * 1024)}";

      extra-experimental-features = [
        "flakes" # flakes
        "nix-command" # experimental nix commands
        "recursive-nix" # let nix invoke itself
        "ca-derivations" # content addressed nix
        "auto-allocate-uids" # allow nix to automatically pick UIDs, rather than creating nixbld* user accounts
        "cgroups" # allow nix to execute builds inside cgroups
      ];

      substituters = [
        "https://cache.nixos.org?priority=100"
        "https://cache.privatevoid.net"
        "https://cuda-maintainers.cachix.org"
        "https://hyprland.cachix.org"
        "https://nix-community.cachix.org"
        "https://nyx.chaotic.cx/"
      ];

      trusted-public-keys = [
        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
        "cache.privatevoid.net:SErQ8bvNWANeAvtsOESUwVYr2VJynfuc9JRwlzTTkVg="
        "chaotic-nyx.cachix.org-1:HfnXSw4pj95iI/n17rIDy40agHj12WfF+Gqk6SonIT8="
        "cuda-maintainers.cachix.org-1:0dq3bujKpuEPMCX6U4WylrUDZ9JyUG0VpVZa7CNfq5E="
        "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
        "nyx.chaotic.cx-1:HfnXSw4pj95iI/n17rIDy40agHj12WfF+Gqk6SonIT8="
      ];
    };
  };

  programs = {
    dconf.enable = true;
    fish.enable = true;
    gamemode.enable = true;
    steam.enable = true;
    gnupg.agent.enable = true;
    virt-manager.enable = true;

    hyprland = {
      enable = true;
      package = inputs.hyprland.packages.${pkgs.system}.hyprland;
    };

    nh = {
      enable = true;
      flake = "/home/marshall/nix-config";
    };
  };

  networking = {
    useDHCP = mkDefault true;
    hostName = "navis";
    firewall.enable = false;
    nameservers = ["1.1.1.1" "1.0.0.1"];
    networkmanager.dns = "none";
    networkmanager.enable = true;
  };

  time.timeZone = "America/New_York";

  services = {
    btrfs.autoScrub.enable = true;
    flatpak.enable = true;
    getty.autologinUser = "marshall";
    gnome.gnome-keyring.enable = true;
    mullvad-vpn.enable = true;
    ollama.enable = true;
    openssh.enable = true;
    spice-vdagentd.enable = true;
    udisks2.enable = true;

    greetd = {
      enable = true;
      settings = rec {
        initial_session = {
          command = "${pkgs.hyprland}/bin/Hyprland";
          user = "marshall";
        };

        default_session = initial_session;
      };
    };

    libinput = {
      enable = true;
      touchpad.naturalScrolling = true;
    };

    xserver = {
      enable = true;
      videoDrivers = ["nvidia"];
    };

    pipewire = {
      enable = true;
      alsa.enable = true;
      alsa.support32Bit = true;
      pulse.enable = true;
    };
  };

  users = {
    mutableUsers = false;

    users.marshall = {
      isNormalUser = true;
      extraGroups = ["wheel" "gamemode" "libvirtd" "qemu-libvirtd" "disk" "networkmanager"];
      shell = fish;
      hashedPasswordFile = config.age.secrets.passwd.path;
    };
  };

  hardware = {
    bluetooth.enable = true;
    i2c.enable = true;

    opengl = {
      enable = true;
      driSupport = true;
      driSupport32Bit = true;
      extraPackages = [
        vaapiVdpau
        nvidia-vaapi-driver
      ];
    };

    nvidia-container-toolkit.enable = true;

    nvidia = {
      package = config.boot.kernelPackages.nvidiaPackages.beta;
      modesetting.enable = true;
      powerManagement.enable = true;

      prime = {
        sync.enable = true;

        intelBusId = "PCI:0:2:0";
        nvidiaBusId = "PCI:1:0:0";
      };
    };
  };

  xdg.portal.enable = true;

  system.stateVersion = "24.05";
}