export NIX_CONFIG="experimental-features = nix-command flakes"

echo "=== nix --version ==="
nix --version
echo

echo "=== nix flake show ==="
nix flake show .
echo

echo "=== nix eval (raw toplevel) ==="
nix eval --raw .#nixosConfigurations.nixos-local-wireguard-server.config.system.build.toplevel || true
echo

echo "=== nix build --dry-run ==="
nix build --dry-run .#nixosConfigurations.nixos-local-wireguard-server.config.system.build.toplevel || true