nix: manage waybar with home-manager

.config/systemd/user/waybar.service

@@ -1,17 +0,0 @@
-# ~/.config/systemd/user/waybar.service or /etc/systemd/user/waybar.service
-[Unit]
-Description=Highly customizable Wayland bar for Sway and Wlroots based compositors.
-Documentation=https://github.com/Alexays/Waybar/wiki/
-#PartOf=graphical-session.target
-PartOf=sway-session.target
-After=sway-session.target
-
-[Service]
-ExecStart=/usr/bin/waybar
-# Upstreamed in https://github.com/Alexays/Waybar/pull/1036
-ExecReload=kill -SIGUSR2 $MAINPID
-Restart=on-failure
-RestartSec=5s
-
-[Install]
-WantedBy=sway-session.target

.config/systemd/user/waybar.service.d/override.conf

@@ -1,2 +0,0 @@
-[Service]
-Environment=PATH=%h/bin:/usr/local/bin:/usr/bin

home-leo.nix

@@ -83,6 +83,7 @@ in {
     bemenu
     swayr
     kanshi
+    waybar
   ];
 
   imports = [
@@ -117,6 +118,24 @@ in {
       Install = {WantedBy = [config.services.kanshi.systemdTarget];};
     };
 
+    waybar = {
+      Unit = {
+        Description = "Highly customizable Wayland bar for Sway and Wlroots based compositors.";
+        Documentation = "https://github.com/Alexays/Waybar/wiki/";
+        PartOf = swayTgt;
+        After = swayTgt;
+      };
+
+      Service = {
+        ExecStart = "${pkgs.waybar}/bin/waybar";
+        ExecReload = "kill -SIGUSR2 $MAINPID";
+        Restart = "on-failure";
+        RestartSec = "3s";
+      };
+
+      Install = {WantedBy = [swayTgt];};
+    };
+
     autotiling = {
       Unit = {
         Description = "Script for sway and i3 to automatically switch the horizontal / vertical window split orientation";