install ghc 7.8
install ghc 7.8

mkscrg/persistent,jasonzoladz/persistent,rdnetto/persistent,gbwey/persistent,superduper/persistent,mkscrg/persistent,pseudonom/persistent,gbwey/persistent,andrewthad/persistent,jcristovao/persistent,greydot/persistent,junjihashimoto/persistent,junjihashimoto/persistent,yesodweb/persistent,jasonzoladz/persistent,mitchellwrosen/persistent,plow-technologies/persistent,greydot/persistent,bitemyapp/persistent,meteficha/persistent,greydot/persistent,meteficha/persistent,jcristovao/persistent,mitchellwrosen/persistent,mkscrg/persistent,paul-rouse/persistent,gbwey/persistent,nakaji-dayo/persistent,mitchellwrosen/persistent,andrewthad/persistent,jasonzoladz/persistent,andrewthad/persistent,superduper/persistent,creichert/persistent,superduper/persistent,naushadh/persistent,jcristovao/persistent,pseudonom/persistent,psibi/persistent,erikd/persistent,nakaji-dayo/persistent,rdnetto/persistent,nakaji-dayo/persistent,meteficha/persistent