Add a missing import on older GHC
Add a missing import on older GHC

ndmitchell/hoogle,wolftune/hoogle,BartAdv/hoogle,ndmitchell/hoogle,wolftune/hoogle,BartAdv/hoogle,wolftune/hoogle,BartAdv/hoogle,ndmitchell/hoogle,BartAdv/hoogle,wolftune/hoogle