From a89b885ae9614d6c5abb045cbd90c4e2e89f90b7 Mon Sep 17 00:00:00 2001
From: laalsaas <laalsaas@systemli.org>
Date: Mon, 1 Jul 2024 00:14:48 +0200
Subject: [PATCH] sway: integrate with systemd

see: https://github.com/swaywm/sway/wiki/Systemd-integration
---
 nixos/modules/programs/wayland/sway.nix | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/nixos/modules/programs/wayland/sway.nix b/nixos/modules/programs/wayland/sway.nix
index 8d43a3329f41..27c32ce42dc5 100644
--- a/nixos/modules/programs/wayland/sway.nix
+++ b/nixos/modules/programs/wayland/sway.nix
@@ -123,12 +123,23 @@ in
             # Import the most important environment variables into the D-Bus and systemd
             # user environments (e.g. required for screen sharing and Pinentry prompts):
             exec dbus-update-activation-environment --systemd DISPLAY WAYLAND_DISPLAY SWAYSOCK XDG_CURRENT_DESKTOP
+            # enable systemd-integration
+            exec "systemctl --user import-environment {,WAYLAND_}DISPLAY SWAYSOCK; systemctl --user start sway-session.target"
+            exec swaymsg -t subscribe '["shutdown"]' && systemctl --user stop sway-session.target
           '';
         } // lib.optionalAttrs (cfg.package != null) {
           "sway/config".source = lib.mkOptionDefault "${cfg.package}/etc/sway/config";
         };
       };
 
+      systemd.user.targets.sway-session = {
+        description = "sway compositor session";
+        documentation = [ "man:systemd.special(7)" ];
+        bindsTo = [ "graphical-session.target" ];
+        wants = [ "graphical-session-pre.target" ];
+        after = [ "graphical-session-pre.target" ];
+      };
+
       # To make a Sway session available if a display manager like SDDM is enabled:
       services.displayManager.sessionPackages = lib.optional (cfg.package != null) cfg.package;