Fix amethyst config

.config/nix/home/amethyst.nix

@@ -5,9 +5,14 @@
     window-margin-size: 10
     mouse-swaps-windows: true
     mouse-resizes-windows: true
-    floating: [
+    floating-is-blacklist: true
-      com.apple.iphonesimulator
+    float-small-windows: true
-      com.apple.systempreferences
+    floating:
-    ]
+      - com.apple.iphonesimulator
+      - com.apple.systempreferences
+    layouts:
+      - tall
+      - fullscreen
+      - floating
   '';
 }