Add libxml2 to steam-run
diff --git a/src/system.nix b/src/system.nix
index 6f972b4..f909729 100644
--- a/src/system.nix
+++ b/src/system.nix
@@ -381,6 +381,7 @@
        steam = super.steam.override {
          extraPkgs = pkgs: with pkgs; [
            cups
+           libxml2
          ];
        };
 #      polkit = super.polkit.overrideAttrs (oldAttrs: {