Where should cabal install to by default?

[Isaac Dupree]

Jeffrey Yasskin wrote:
> FWIW, Python recently went through this exercise and produced
> http://python.org/dev/peps/pep-0370/, which does use the $HOME/.local
> directory. I don't know how much that should affect Cabal's choice,
> but it's a bit of prior art if you're interested.

It seems $HOME/.local/bin is shared between all programs, 
unlike e.g. $HOME/.local/lib/python2.6/ ? Of course this is 
how /usr/local works already.  But I wonder if we should put 
the actual binaries somewhere else, and just put symlinks in 
that "bin" directory.  What if the pythoners accidentally 
call some program "happy" and it conflicts with the binary 
derived from haskell's Hackage?  (Of course that would be a 
problem for other reasons, but it's worse if it requires 
overwriting unknown binaries with binaries rather than 
symlinks vs. symlinks.)

-Isaac