hosts/snowhawk/hardware-configuration.nix

@@ -50,20 +50,17 @@
 
 
   systemd.user.services.screenlayout = {
-    script = lib.getExe
-      (pkgs.writeXrandrScriptBin "default-monitors" {
-        DP-0 = {
-          primary = true;
-          mode = "1920x1080";
-          pos = "1920x0";
-          rotate = "normal";
-        };
-        HDMI-0 = {
-          mode = "1920x1080";
-          pos = "0x0";
-          rotate = "normal";
-        };
-      });
+    script = ''
+      ${pkgs.xorg.xrandr}/bin/xrandr \
+            --output DP-0 --primary --mode 1920x1080 --pos 1920x0 --rotate normal \
+            --output HDMI-0 --mode 1920x1080 --pos 0x0 --rotate normal \
+            --output DP-1 --off \
+            --output DP-2 --off \
+            --output DP-3 --off \
+            --output DP-4 --off \
+            --output DP-5 --off \
+            --output HDMI-1 --off
+    '';
     wantedBy = [ "graphical-session.target" ];
     partOf = [ "graphical-session.target" ];
   };

pkgs/default.nix

@@ -3,6 +3,6 @@ let
   callDefaultPackage = path: prev.callPackage path { };
 in
 {
-  wrapWine = callDefaultPackage ./wrapWine;
-  writeXrandrScriptBin = callDefaultPackage ./writeXrandrScriptBin;
+  wrapWine = callDefaultPackage ./wrapWine.nix;
+  writeXrandrScriptBin = callDefaultPackage ./writeXrandrScriptBin.nix;
 }

pkgs/writeXrandrScriptBin.nix

@@ -1,7 +1,7 @@
-{ lib, writeShellScriptBin, xrandr }:
+{ lib, writeShellScriptBin }:
 let
   inherit (builtins) getAttr hasAttr isAttrs concatStringsSep;
-  inherit (lib) assertMsg lists escapeShellArgs getExe;
+  inherit (lib) assertMsg lists escapeShellArgs;
   inherit (lib.attrsets) mapAttrsToList;
   inherit (lib.cli) toGNUCommandLine;
 in
@@ -14,7 +14,7 @@ let
 
   getArgList = output: config:
     (escapeShellArgs (lists.flatten [
-      (toGNUCommandLine { } { inherit output; })
+      (toGNUCommandLine { } { "--output" = output; })
       (lists.optional (isPrimary config) "--primary")
       (toGNUCommandLine { } config)
     ]));
@@ -22,6 +22,6 @@ let
   args = mapAttrsToList getArgList config;
 in
 writeShellScriptBin name ''
-  ${getExe xrandr} \
+  xrandr \
     ${concatStringsSep " \\\n  " args}
 ''