Fixes build failure on ghc-7.10.1 with void-0.6.
Package-Manager: portage-2.2.28
RDEPEND=">=dev-haskell/transformers-0.2:=[profile?] <dev-haskell/transformers-0.5:=[profile?]
>=dev-haskell/transformers-compat-0.3:=[profile?] <dev-haskell/transformers-compat-1:=[profile?]
- >=dev-haskell/void-0.6:=[profile?] <dev-haskell/void-1:=[profile?]
+ >=dev-haskell/void-0.7.1:=[profile?] <dev-haskell/void-1:=[profile?]
>=dev-lang/ghc-7.4.1:=
semigroups? ( >=dev-haskell/semigroups-0.15.2:=[profile?] <dev-haskell/semigroups-1:=[profile?] )
statevar? ( >=dev-haskell/statevar-1.1:=[profile?] <dev-haskell/statevar-1.2:=[profile?] )