Fix detection of cabal-install ver (ghcjs setup)
Fix detection of cabal-install ver (ghcjs setup)

deech/stack,MichielDerhaeg/stack,juhp/stack,anton-dessiatov/stack,AndreasPK/stack,MichielDerhaeg/stack,sjakobi/stack,AndrewRademacher/stack,narrative/stack,mrkkrp/stack,AndreasPK/stack,Fuuzetsu/stack,anton-dessiatov/stack,Fuuzetsu/stack,Heather/stack,Blaisorblade/stack,phadej/stack,Blaisorblade/stack,martin-kolinek/stack,deech/stack,mrkkrp/stack,juhp/stack,Heather/stack,AndrewRademacher/stack,sjakobi/stack,martin-kolinek/stack,phadej/stack,narrative/stack