with {_, %__MODULE__{} = pack} <- {:loaded, load_pack(name)},
{_, {filename, files}} when not is_nil(filename) <-
{:exists, Map.pop(pack.files, shortcode)},
with {_, %__MODULE__{} = pack} <- {:loaded, load_pack(name)},
{_, {filename, files}} when not is_nil(filename) <-
{:exists, Map.pop(pack.files, shortcode)},