[Haskell-cafe] problem installing GHC on Ubuntu 16.10

Hi, Anyone knows why I am not able to install GHC 8 nor 7.10 on my Ubuntu 16.10 machine using the packages from GHC's page nor using stack setup? Here are the errors thrown by stack setup: * http://lpaste.net/180513 * http://lpaste.net/180514 Ubuntu 16.10 provides GHC 7.10 as package but I'd like to have GHC 8. thanks Guillaume