Jovian configuration for my HTPC

configuration.nix

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
      # nix-channel --add https://github.com/Jovian-Experiments/Jovian-NixOS/archive/refs/heads/development.tar.gz jovian
      <jovian/modules>
    ];

  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  # Use latest kernel instead of LTS
  boot.kernelPackages = pkgs.linuxPackages_latest;

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

  # Enable networking
  networking.networkmanager.enable = true;
  # Enable bluetooth
  hardware.bluetooth.enable = true;
  hardware.bluetooth.powerOnBoot = true;

  # Set your time zone.
  time.timeZone = "Europe/Rome";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "it_IT.UTF-8";
    LC_IDENTIFICATION = "it_IT.UTF-8";
    LC_MEASUREMENT = "it_IT.UTF-8";
    LC_MONETARY = "it_IT.UTF-8";
    LC_NAME = "it_IT.UTF-8";
    LC_NUMERIC = "it_IT.UTF-8";
    LC_PAPER = "it_IT.UTF-8";
    LC_TELEPHONE = "it_IT.UTF-8";
    LC_TIME = "it_IT.UTF-8";
  };

  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # Enable the KDE Plasma Desktop Environment.
  # services.xserver.displayManager.sddm.enable = true;
  services.desktopManager.plasma6.enable = true;

  # Configure keymap in X11
  services.xserver.xkb = {
    layout = "us";
    variant = "";
  };

  # Enable CUPS to print documents.
  # services.printing.enable = true;

  # 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;
  };

  # Enable touchpad support (enabled default in most desktopManager).
  # services.xserver.libinput.enable = true;

  #nixpkgs.overlays = [
  #  (final: prev: {
  #    steamPackages = prev.steamPackages.overrideScope (scopeFinal: scopeSuper: {
  #      steam-fhsenv = scopeSuper.steam-fhsenv.override ({ extraLibraries ? pkgs': [], ... }: {
  #        extraLibraries = pkgs': (extraLibraries pkgs') ++ (with pkgs'; [
  #          gst_all_1.gst-plugins-good
  #          gst_all_1.gst-plugins-bad
  #          gst_all_1.gst-plugins-ugly
  #          gst_all_1.gst-libav
  #        ]);
  #      });
  #      steam = scopeSuper.steam;
  #      steam-fhsenv-small = scopeSuper.steam-fhsenv.small;
  #    });
  #   })
  #];
  programs.steam.enable = true;

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.admiral0 = {
    isNormalUser = true;
    description = "Radu Andries";
    extraGroups = [ "networkmanager" "wheel" ];
    packages = with pkgs; [
      firefox
      kdePackages.kate
      steamPackages.steam
      flatpak
      kdePackages.discover
      # emulators - some are not in nixos any more
      dolphin-emu
      # cemu
      # yuzu-mainline
      # ryujinx
      pcsx2
      # rpcs3
      steam-rom-manager
      vesktop
    #  thunderbird
    ];
  };

  # Allow unfree packages
  nixpkgs.config.allowUnfree = true;

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
     vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
     btop
     screen
     xorg.xhost
     file
     obs-studio-plugins.obs-vkcapture
  ];

  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # programs.mtr.enable = true;
  # programs.gnupg.agent = {
  #   enable = true;
  #   enableSSHSupport = true;
  # };

  # List services that you want to enable:

  # Enable the OpenSSH daemon.
  services.openssh.enable = true;
  programs.ssh.forwardX11 = true;
  #services.openssh.settings.forwardX11 = true;
  # We want flatpaks
  services.flatpak.enable = true;
  xdg.portal = {
    enable = true;
    extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
  };

  # OBS
  programs.obs-studio = {
    enable = true;
    enableVirtualCamera = true;
    plugins = with pkgs.obs-studio-plugins; [
      obs-gstreamer
      obs-vaapi
      obs-vkcapture
    ];
  };

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  networking.firewall.enable = false;

  jovian = {
    decky-loader = {
      enable = true; # fails to build
      extraPackages = with pkgs;[
        python3
      ];
      user = "admiral0";
    };
    steam = {
      enable = true;
      autoStart = true;
      user = "admiral0";
      desktopSession = "plasma";
    };
    steamos = {
     useSteamOSConfig = true; 
    };
  };	
  # Fix issue with missing systemd
  systemd.services.decky-loader.path = [
    "${pkgs.systemd}"
  ];

  services.udev.extraRules = ''
    SUBSYSTEM=="input", ENV{ID_INPUT_ACCELEROMETER}=="?*", TAG+="uaccess"
  '';

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "24.11"; # Did you read the comment?
}