[sway] Move config and use

nixos/modules/default.nix

@@ -3,6 +3,7 @@
     ./desktop
     ./hardware
     ./networking
+    ./nix
     ./programs
     ./services
     ./virtualisation

nixos/modules/desktop/default.nix

@@ -1,5 +1,7 @@
 {
   imports = [
     ./gnome
+    ./plasma
+    ./sway
   ];
 }

nixos/modules/desktop/sway/default.nix

@@ -0,0 +1,128 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.sisyphus.desktop.sway;
+
+  # bash script to let dbus know about important env variables and
+  # propagate 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 {
+  options.sisyphus.desktop.sway.enable = lib.mkEnableOption "Sway";
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = (with pkgs; [
+      dbus-sway-environment
+      configure-gtk
+      wayland
+      xdg-utils # Open with default program
+      glib      # gsettings
+      wl-clipboard
+      wdisplays # Tool to configure displays
+
+      brightnessctl
+      dunst
+      libnotify
+      playerctl
+      swaybg
+      swaylock-effects
+      waybar
+      wlsunset
+
+      # TODO Turn into own module/package?
+      jq
+      j4-dmenu-desktop
+      rofi
+    ]) ++ (with pkgs.sway-contrib; [
+      grimshot
+    ]);
+
+    environment.sessionVariables = {
+      SCRIPT_DIR = ../../../../scripts;
+    };
+
+    fonts.fonts = with pkgs; [
+      dejavu_fonts
+      font-awesome
+      noto-fonts
+      noto-fonts-cjk
+      noto-fonts-emoji
+      source-han-sans
+      source-han-sans-japanese
+      source-han-serif-japanese
+    ];
+
+    security.polkit.enable = true;
+  
+    services = {
+      atd.enable = true; # Required by sunset.sh
+      dbus.enable = true;
+      gnome.gnome-keyring.enable = true;
+
+      pipewire = {
+        enable = true;
+        alsa.enable = true;
+        pulse.enable = true;
+      };
+
+      power-profiles-daemon.enable = true;
+
+      xserver.displayManager.session = [{
+        manage = "window";
+        name = "Sway";
+        start = ''
+          ${pkgs.sway}/bin/sway --unsupported-gpu &
+          waitPID=$!
+        '';
+      }];    
+    };
+    
+    xdg.portal = {
+      enable = true;
+      wlr.enable = true;
+      extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
+    };
+  
+    programs.sway = {
+      enable = true;
+      wrapperFeatures.gtk = true;
+    };
+
+    sisyphus.users.wantedGroups = [
+      config.users.groups.video.name # Brightnessctl
+    ];
+  };
+}