Wed Apr 12 10:37:50 EDT 2017

Switch to stack?

It's been a couple of years.  Maybe time to switch default setup to
current state of the art?

Before I was using ghci, cabal-install from Debian packages, then used
"cabal install cabal-install" to upgrade cabal.

Regarding ghci, is it possible to have tab completion in emacs?

Had trouble installing llvm-generic-pure, not sure why.
Removed the sandbox, then reinstalled it following "cabal help sandbox".