xdeltaUnstable uses the same source as xdelta and is a leaf package. Considering that xdelta hasn't received any update upstream in 9 years, we probably don't need the extra `xdeltaUnstable` attr.
xdeltaUnstable uses the same source as xdelta and is a leaf package. Considering that xdelta hasn't received any update upstream in 9 years, we probably don't need the extra `xdeltaUnstable` attr.