Preserve steam directories.

nix/configuration/roles/steam/default.nix

@@ -31,6 +31,16 @@
           # dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
           localNetworkGameTransfers.openFirewall = true; # Open ports in the firewall for Steam Local Network Game Transfers
         };
+
+        environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
+          hideMounts = true;
+          users.talexander = {
+            directories = [
+              ".local/share/Steam"
+              ".steam"
+            ];
+          };
+        };
       })
     ]
   );