Attempt to fix travis build with cabal-install
Attempt to fix travis build with cabal-install

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