Better hidpi handling

nixos/common.nix

@@ -76,8 +76,9 @@ in
             clickMethod = "clickfinger";
           };
 
-          displayManager.slim = {
+          displayManager.sddm = {
             enable = true;
+            enableHidpi = true;
           };
         };
       };

nixos/home.nix

@@ -27,7 +27,6 @@ in
     ];
     home.sessionVariables = {
       TERMINAL="alacritty";
-      GDK_SCALE="2";
       QT_AUTO_SCREEN_SCALE_FACTOR="1";
     };
 

nixos/programs/alacritty.nix

@@ -17,7 +17,7 @@
 
       font = {
         family = "DejaVu Sans Mono for Powerline";
-        size = 12.0;
+        size = 8.0;
       };
 
       draw_bold_text_with_bright_colors = true;
@@ -50,7 +50,7 @@
           white=   "0xfdf6e3";
         };
 
-        background_opacity= 1.0;
+        background_opacity = 0.9;
         dynamic_title= true;
       };
       cursor= {

nixos/user-xsession.nix

@@ -14,6 +14,7 @@ in
         package = pkgs.i3-gaps;
         config = {
           startup = [
+            { command = "exec autorandr -c"; always = true; notification = false; }
             { command = "exec i3-sensible-terminal"; always = false; notification = false; }
             { command = "exec $HOME/dev/dotfiles/lock.sh"; always = false; notification = false; }
           ];
@@ -61,6 +62,10 @@ in
 
     programs.autorandr = {
       enable = true;
+      hooks.postswitch = {
+        "notify-i3" = "''${pkgs.i3}/bin/i3-msg restart";
+      };
+
       profiles = {
         "foureighty-alone" = {
           fingerprint = {
@@ -70,10 +75,8 @@ in
             eDP1 = {
               enable = true;
               primary = true;
-              position = "0x0";
               mode = "2560x1440";
-              rate = "60.00";
-              scale = { x=1.25; y=1.25; };
+              dpi = 192;
             };
           };
         };