hierarchy-0.3.1: dependencies

Dependencies for hierarchy-0.3.1

library	base (>=4.7 && <4.9) exceptions (>=0.8 && <0.9) free (>=4.12 && <4.13) mmorph (>=1.0 && <1.1) monad-control (>=1.0 && <1.1) mtl (>=2.1 && <2.3) pipes (>=4.1 && <4.2) semigroups (>=0.16 && <0.19) transformers (>=0.3 && <0.5) transformers-base (>=0.3 && <0.5) transformers-compat (>=0.3 && <0.5)