Agda fails to install

[Dominic Steinitz]

I'm guessing if I install happy then haskell-src will install and the
agda will install but I'm not clear why this doesn't happen
automatically. Hmm even installing happy doesn't seem to improve
things.  Aha su-ing and then installing happy with the --global flag did
the trick. But now I have the same problem with alex :-) Ok now
everything builds.

I thought cabal was supposed to relieve me of this sort of dependency
chasing?

Dominic.

> cabal: Error: some packages failed to install:
> Agda-2.2.6 depends on haskell-src-1.0.1.3 which failed to install.
> haskell-src-1.0.1.3 failed during the building phase. The exception was:
> ExitFailure 1