  We show that for a minimal, second countable, locally compact Hausdorff
\'etale groupoid whose unit space is homeomorphic to the Cantor set, if the
groupoid has comparison then the commutator subgroup of its full group is
simple. This generalizes a result of Bezuglyi and Medynets for Cantor minimal
systems and complements Matui's results for topological full groups.
