nixos-config/system/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, ... }:
let
 # bash script to let dbus know about important env variables and
  # propogate them to relevent services run at the end of sway config
  # see
  # https://github.com/emersion/xdg-desktop-portal-wlr/wiki/"It-doesn't-work"-Troubleshooting-Checklist
  # note: this is pretty much the same as  /etc/sway/config.d/nixos.conf but also restarts
  # some user services to make sure they have the correct environment variables
  dbus-sway-environment = pkgs.writeTextFile {
    name = "dbus-sway-environment";
    destination = "/bin/dbus-sway-environment";
    executable = true;
    text = ''
      dbus-update-activation-environment --systemd WAYLAND_DISPLAY XDG_CURRENT_DESKTOP=sway
      systemctl --user stop pipewire pipewire-media-session xdg-desktop-portal xdg-desktop-portal-wlr
      systemctl --user start pipewire pipewire-media-session xdg-desktop-portal xdg-desktop-portal-wlr
    '';
  };
  # currently, there is some friction between sway and gtk:
  # https://github.com/swaywm/sway/wiki/GTK-3-settings-on-Wayland
  # the suggested way to set gtk settings is with gsettings
  # for gsettings to work, we need to tell it where the schemas are
  # using the XDG_DATA_DIR environment variable
  # run at the end of sway config
  configure-gtk = pkgs.writeTextFile {
      name = "configure-gtk";
      destination = "/bin/configure-gtk";
      executable = true;
      text = let
        schema = pkgs.gsettings-desktop-schemas;
        datadir = "${schema}/share/gsettings-schemas/${schema.name}";
      in ''
        export XDG_DATA_DIRS=${datadir}:$XDG_DATA_DIRS
        gnome_schema=org.gnome.desktop.interface
        gsettings set $gnome_schema gtk-theme 'Dracula'
      '';
  };
in
{
  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  boot.loader.efi.efiSysMountPoint = "/boot/efi";
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
  # Enable networking
  networking.networkmanager.enable = true;
  # Set your time zone.
  time.timeZone = "America/Sao_Paulo";
  # Select internationalisation properties.
  i18n.defaultLocale = "pt_BR.utf8";
  # Enable the X11 windowing system.
  services.xserver.enable = false;
  # Enable the GNOME Desktop Environment.
  # services.xserver.displayManager.gdm.enable = true;
  # services.xserver.desktopManager.gnome.enable = true;
  # services.xserver.displayManager.autologin.user = "lelgenio";
  services.greetd =  let
    swayConfig = pkgs.writeText "greetd-sway-config" ''
      # `-l` activates layer-shell mode. Notice that `swaymsg exit` will run after gtkgreet.
      exec "${pkgs.greetd.gtkgreet}/bin/gtkgreet -l -c sway; swaymsg exit"
      bindsym Mod4+shift+e exec swaynag \
        -t warning \
        -m 'What do you want to do?' \
        -b 'Poweroff' 'systemctl poweroff' \
        -b 'Reboot' 'systemctl reboot'
      input "*" {
        repeat_delay 200
        repeat_rate 30
        xkb_layout us(colemak)
        xkb_numlock enabled
        xkb_options lv3:lsgt_switch,grp:shifts_toggle
      }
    '';
  in {
    enable = true;
    settings = {
      initial_session = {
        command = "${pkgs.sway}/bin/sway";
        user = "lelgenio";
      };
      default_session = {
        command = "${pkgs.sway}/bin/sway --config ${swayConfig}";
      };
    };
  };
  # Configure keymap in X11
  services.xserver = {
    layout = "us";
    xkbVariant = "colemak";
  };
  console.keyMap = "colemak";
  # Enable CUPS to print documents.
  # services.printing.enable = true;
  services.dbus.enable = true;
  xdg.portal = {
    enable = true;
    wlr.enable = true;
    # gtk portal needed to make gtk apps happy
    extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
    gtkUsePortal = true;
  };
  services.flatpak.enable = true;
  virtualisation.docker.enable = true;
  # Enable sound with pipewire.
  sound.enable = true;
  hardware.pulseaudio.enable = true;
  security.rtkit.enable = true;
  services.pipewire.enable = true;
  # Enable touchpad support (enabled default in most desktopManager).
  services.xserver.libinput.enable = true;
  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.lelgenio = {
    isNormalUser = true;
    description = "Leonardo Eugênio";
    extraGroups = [ "networkmanager" "wheel" "docker"];
    shell = pkgs.fish;
  };
  # services.getty.autologinUser = "lelgenio";
  programs.fish.enable = true;
  services.syncthing = {
    enable = true;
    user = "lelgenio";
    dataDir = "/home/lelgenio/";
    configDir = "/home/lelgenio/.config/syncthing";
  };
  # 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.
  #  wget
    git
    pinentry-curses
    firefox
    vscode
    micro
    fd
    kakoune
    kak-lsp
    pavucontrol
    tdesktop
    # recomended by nixwiki
    alacritty # gpu accelerated terminal
    sway
    dbus-sway-environment
    configure-gtk
    wayland
    glib # gsettings
    dracula-theme # gtk theme
    gnome3.adwaita-icon-theme  # default gnome cursors
    swaylock
    swayidle
    grim # screenshot functionality
    slurp # screenshot functionality
    wl-clipboard # wl-copy and wl-paste for copy/paste from stdin / stdout
    bemenu # wayland clone of dmenu
    mako # notification system developed by swaywm maintainer
    (orchis-theme.override { tweaks = [ "compact" "solid" ]; })
  ];
  # enable sway window manager
  programs.sway = {
    enable = true;
    wrapperFeatures.gtk = true;
  };
  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # programs.mtr.enable = true;
  services.pcscd.enable = true;
  programs.gnupg.agent = {
    enable = true;
    enableSSHSupport = true;
    pinentryFlavor = "curses";
  };
  # List services that you want to enable:
  # Enable the OpenSSH daemon.
  # services.openssh.enable = true;
  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  networking.firewall.enable = false;
  nix = {
    package = pkgs.nixFlakes; # or versioned attributes like nixVersions.nix_2_8
    extraOptions = ''
      experimental-features = nix-command flakes
    '';
  };
  # 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 leavecatenate(variables, "bootdev", bootdev)
  # 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 = "22.05"; # Did you read the comment?
}