Dependencies missing when building ghc.

[Daniel Trstenjak]

> I am with my new Ubuntu Trusty box. I have installed ghc by apt-get. Then I
> wanted to build ghc from git to upgrade to 7.8.3.

If you only want to install a newer ghc version on ubuntu or even
multiple ghc versions at once, then I can only recommend the excellent
PPA of Herbert Valerio Riedel:

   https://launchpad.net/~hvr/+archive/ubuntu/ghc


Greetings,
Daniel