Inhibit idle when running a Steam game

programs/desktop/sway/default.nix

@@ -80,7 +80,7 @@
         border = 1;
         titlebar = false;
         commands =
-          map (criteria: {
+          (map (criteria: {
               inherit criteria;
               command = "floating enable";
             }) [
@@ -93,6 +93,12 @@
               {class = "[Mm]atplotlib";}
               {class = ".*\.py";}
               {class = "Idl";}
+            ])
+          ++ [
+            {
+              criteria.class = "steam_app*";
+              command = "inhibit_idle focus";
+            }
           ];
       };
       floating.border = 1;