Switched from way-displays to kanshi, seems to work much better.

home-manager/dots/river.nix

@@ -15,7 +15,7 @@
         LOCKSCREEN="swaylock"
         
         # Autostart
-        riverctl spawn "way-displays -c $HOME/.config/way-displays/cfg.yaml"
+        riverctl spawn "kanshi"
         riverctl spawn "wallpaper.sh -r"
         riverctl spawn "wl-paste --type text --watch cliphist store"
         riverctl spawn "wl-paste --type image --watch cliphist store"

home-manager/dots/way-displays.nix

@@ -1,89 +0,0 @@
-{ pkgs, config, ... }:
-{
-  xdg.configFile = {
-    "way-displays/cfg.yml" = {
-      enable = true;
-      text = ''
-        # Default cfg.yaml for way-displays.
-        # Copy this to ~/.config/way-displays/cfg.yaml and edit it to your liking.
-        #
-        # See https://github.com/alex-courtis/way-displays/blob/master/doc/CONFIGURATION.md
-        
-        
-        # Arrange displays in a ROW (default, left to right) or a COLUMN (top to bottom)
-        ARRANGE: ROW
-        
-        # Align ROWs at the TOP (default), MIDDLE or BOTTOM
-        # Align COLUMNs at the LEFT (default), MIDDLE or RIGHT
-        ALIGN: TOP
-        
-        
-        # The default ORDER is simply the order in which the displays are discovered.
-        # Define your own.
-        ORDER:
-          - 'DP-1'
-          - 'DP-2'
-        
-        
-        # Enable scaling, overrides AUTO_SCALE and SCALE
-        SCALING: TRUE
-        
-        # The default is to scale each display by DPI.
-        # This may be disabled and scale 1 will be used, unless a SCALE has been specified.
-        AUTO_SCALE: TRUE
-        
-        
-        # Auto scale may be overridden for each display.
-        SCALE:
-          #- NAME_DESC: 'monitor description'
-          #  SCALE: 1.75
-        
-        # Override the preferred mode.
-        # WARNING: this may result in an unusable display. See https://github.com/alex-courtis/way-displays#known-issues-with-workarounds
-        # for a possible workaround.
-        MODE:
-            # Resolution and refresh
-            #- NAME_DESC: HDMI-A-1
-            #  WIDTH: 1920
-            #  HEIGHT: 1080
-            #  HZ: 60
-        
-            # Resolution with highest refresh
-            #- NAME_DESC: 'monitor description'
-            #  WIDTH: 2560
-            #  HEIGHT: 1440
-        
-            # Highest available
-            - NAME_DESC: DP-1
-              MAX: TRUE
-            - NAME_DESC: DP-2
-              MAX: TRUE
-        
-        # Rotate or translate the display.
-        # 90, 180, 270, FLIPPED, FLIPPED-90, FLIPPED-180, FLIPPED-270
-        TRANSFORM:
-          # - NAME_DESC: 'monitor description'
-          #   TRANSFORM: 270
-        
-        # VRR / adaptive sync is enabled by default. Disable it per display.
-        VRR_OFF:
-          # - DP-2
-          # - '!.*my monitor.*'
-        
-        
-        # Laptop displays usually start with eDP e.g. eDP-1. This may be overridden if
-        # your laptop is different.
-        #LAPTOP_DISPLAY_PREFIX: 'eDP'
-        
-        
-        # One of: ERROR, WARNING, INFO (default), DEBUG
-        LOG_THRESHOLD: INFO
-        
-        
-        # Disable the specified displays.
-        DISABLED:
-          #- "eDP-1"
-      '';
-    };
-  };
-}

home-manager/wayland.nix

@@ -15,4 +15,23 @@
   # themes can be found here: https://github.com/tinted-theming/base16-schemes
   colorScheme = inputs.nix-colors.colorSchemes.dracula;
   gtkNix.enable = true;
+  services.kanshi = {
+    enable = true;
+    profiles = {
+      default = {
+        outputs = [
+          {
+            criteria = "DP-1";
+            position = "0,0";
+            mode = "2560x1440@164.99Hz";
+          }
+          {
+            criteria = "DP-2";
+            position = "2560,0";
+            mode = "2560x1440@164.99Hz";
+          }
+        ];
+      };
+    };
+  };
 }

nixos/wayland.nix

@@ -32,13 +32,13 @@
         grim
         foot
         imv
+        kanshi
         mako
         slurp
         swappy
         swaylock
         swww
         tessen
-        way-displays
         wf-recorder
         wl-clipboard
         wtype