{ pkgs, lib, ... }:

{
  imports = [
    ./modules/nix-flatpak.nix
  ];

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

  # List packages installed in system profile.
  environment.systemPackages = with pkgs; [
    # System
    gsettings-desktop-schemas
    vulkan-tools

    # Utilities
    gparted
    fastfetch
    cava
    dconf-editor
    krita

    # Games
    prismlauncher

    # Developement
    vscode # extensions configured by users
    nixfmt
    nixd
    nil
    scrcpy
    android-tools
    kicad
    (pico-sdk.override {
      withSubmodules = true;
    })
    picotool
    gnumake
    cmake
    gcc
    gcc-arm-embedded
    python315

    # Communication
    (element-desktop.overrideAttrs (oldAttrs: {
      desktopItems =  [
        ((builtins.elemAt oldAttrs.desktopItems 0).override { startupWMClass = "element"; })
      ];
    }))
    discord

    # Music
    amberol
  ];

  # Install other packages.
  programs.firefox.enable = true;
  programs.steam.enable = true;
  programs.git.enable = true;
  programs.htop.enable = true;
  programs.dconf.enable = true;
#  services.tailscale.enable = true;

  # Install flatpak.
  services.flatpak.enable = true;

  # Add a new remote. Keep the default one (flathub)
  services.flatpak.remotes = lib.mkOptionDefault [{
    name = "flathub";
    location = "https://dl.flathub.org/repo/flathub.flatpakrepo";
  }];

  # Nix-Flatpak configuration.
  services.flatpak.update.auto.enable = false;
  services.flatpak.uninstallUnmanaged = true;

  # Flatpaks to install
  services.flatpak.packages = [
    "com.github.tchx84.Flatseal"
    "com.jetpackduba.Gitnuro"
    "moe.launcher.the-honkers-railway-launcher"
    "com.obsproject.Studio"
#    "dev.deedles.Trayscale"
  ];

  # Remove unwanted packages.
  services.xserver.excludePackages = [
    pkgs.xterm
  ];

  # Remove some Gnome packages.
  environment.gnome.excludePackages = with pkgs; [
    epiphany
    cheese
    snapshot
    gnome-software
    gnome-music
    gnome-tour
    yelp
  ];

  environment.sessionVariables.XDG_DATA_DIRS = [
    "${pkgs.gsettings-desktop-schemas}/share/gsettings-schemas/${pkgs.gsettings-desktop-schemas.name}"
    "${pkgs.gtk3}/share/gsettings-schemas/${pkgs.gtk3.name}"
  ];
}