Use autorandr instead of grobi

nixos/i3/autorandr.nix

@@ -0,0 +1,36 @@
+{ config, pkgs, ... }:
+{
+
+  programs.autorandr = {
+    enable = true;
+    hooks.postswitch = {
+      "change-dpi" = ''
+          case "$AUTORANDR_CURRENT_PROFILE" in
+            foureighty)
+              DPI=144
+              ;;
+            *)
+              echo "Unknown profle: $AUTORANDR_CURRENT_PROFILE"
+              exit 1
+          esac
+          echo "changing DPI to $DPI"
+          ${pkgs.xorg.xrandr}/bin/xrandr --dpi $DPI
+      '';
+      "restart-i3" = "sudo ${pkgs.i3}/bin/i3-msg restart";
+    };
+    profiles = {
+      "foureighty" = {
+        fingerprint = {
+          eDP-1 = "00ffffffffffff0006af362300000000001b0104a51f117802f4f5a4544d9c270f505400000001010101010101010101010101010101e65f00a0a0a040503020350035ae100000180000000f0000000000000000000000000020000000fe0041554f0a202020202020202020000000fe004231343051414e30322e33200a00b2";
+        };
+        config = {
+          eDP-1 = {
+            enable = true;
+            mode = "2560x1440";
+          };
+        };
+      };
+    };
+  };
+
+}

nixos/i3/home.nix

@@ -1,6 +1,7 @@
 { config, pkgs, ... }:
 {
   imports = [
+    ./autorandr.nix
     ./i3.nix
     ./i3-status.nix
     ./dunst.nix