add wlr-randr, set output scale to 2

configuration.nix

@@ -41,6 +41,14 @@ in {
   ];
 
   config = {
+    nixpkgs.overlays = [
+      (final: prev: {
+        wlr-randr = prev.wlr-randr.overrideAttrs(o: {
+          depsBuildBuild = [ final.pkgsBuildBuild.pkg-config ];
+        });
+      })
+    ];
+
     mobile = {
       adbd.enable = true;
       boot.stage-1.firmware = [
@@ -143,6 +151,7 @@ SUBSYSTEM=="wwan", ENV{DEVNAME}=="/dev/wwan0qmi0", ENV{DEVTYPE}=="wwan_port", \
   RUN+="${pkgs.libqmi}/bin/qmicli -pd $env{DEVNAME} --loc-set-engine-lock=none"
 
     '';
+
     systemd.services.ModemManager = {
       wantedBy = [ "multi-user.target" ];
       serviceConfig =
@@ -173,6 +182,7 @@ SUBSYSTEM=="wwan", ENV{DEVNAME}=="/dev/wwan0qmi0", ENV{DEVTYPE}=="wwan_port", \
 
     services.cage =
       let wlinit = pkgs.writeScript "wlinit" ''
+        ${pkgs.wlr-randr}/bin/wlr-randr --output DSI-1 --scale 2
         exec ${saturn}/bin/saturn
       '';
       in {
@@ -185,6 +195,7 @@ SUBSYSTEM=="wwan", ENV{DEVNAME}=="/dev/wwan0qmi0", ENV{DEVTYPE}=="wwan_port", \
       drm-framebuffer
       saturn
       satellite
+      wlr-randr
     ];
 
     users.users.dan = {