Instll steam and the zfs_clone_send / zfs_clone_recv scripts.

nix/configuration/configuration.nix

@@ -10,6 +10,7 @@
 {
   imports = [
     ./roles/reset
+    ./util/unfree_polyfill
     ./roles/iso
     ./hosts/odo
     "${
@@ -43,6 +44,7 @@
     ./roles/kubernetes
     ./roles/rust
     ./roles/media
+    ./roles/steam
   ];
 
   nix.settings.experimental-features = [