flake/home/applications/steam/default.nix

{
  pkgs,
  inputs,
  ...
}: {
  home.packages = [
    (pkgs.steam.override {
      extraProfile = "export STEAM_EXTRA_COMPAT_TOOLS_PATHS='${inputs.nix-gaming.packages.${pkgs.stdenv.hostPlatform.system}.proton-ge}'";
    })
  ];
}