fix(niri): fractional scaling

This works in latest unstable niri

config/hosts/imxyy-nix/home.nix

@@ -86,11 +86,14 @@
         }
         {
           command = [
-            "sh"
-            "-c"
-            "sleep 3; ${lib.getExe pkgs.xsettingsd} -c ${pkgs.writeText "xsettingsd.conf" ''
-              Xft/DPI 122880
-            ''}"
+            (toString (
+              pkgs.writeShellScript "xsettingsd" ''
+                while :
+                do
+                  ${lib.getExe pkgs.xsettingsd} -c ${pkgs.writeText "xsettingsd.conf" "Xft/DPI 122880\n"}
+                done
+              ''
+            ))
           ];
         }
       ];

modules/desktop/wm/niri/config.nix

@@ -5,20 +5,6 @@
   ...
 }:
 {
-  my.home.systemd.user.services.xwayland-satellite = {
-    Unit = {
-      Description = "xwayland-satellite";
-      After = [ "niri.service" ];
-    };
-    Service = {
-      ExecStart = "${lib.getExe pkgs.xwayland-satellite-unstable}";
-      Restart = "on-failure";
-    };
-    Install.WantedBy = [
-      "niri.service"
-    ];
-  };
-
   my.home.programs.niri.settings = {
     input = {
       focus-follows-mouse = {
@@ -95,7 +81,6 @@
       XDG_CURRENT_DESKTOP = "niri";
       XDG_SESSION_DESKTOP = "niri";
       QT_AUTO_SCREEN_SCALE_FACTOR = "1";
-      DISPLAY = ":0";
     };
 
     spawn-at-startup = map (c: { command = c; }) [

modules/desktop/wm/niri/default.nix

@@ -70,6 +70,7 @@ in
         cliphist
         swaynotificationcenter
         nemo-with-extensions
+        xwayland-satellite-unstable
       ];
       programs.wofi.enable = true;
       xdg.configFile."wofi" = {