"John D. Ramsdell"
Developers should be using older versions of GHC because they cannot be sure users will have an up-to-date GHC.
I wonder, how hard would it be to have, say Amazon images of various Linux distributions with ghc and cabal-install available? Currently, I have a discontious integration server that checks my stuff by pulling off hackage, but this is a bit limited, as well as a security risk. I'd consider running something off Amazon instead - perhaps it could even be automated, so that I could do 'cabal install whatever' in parallel on a slew of configurations? And, although I could probably pay for my own stuff, perhaps Amazon could contribute (som of) the CPU time? -k -- If I haven't seen further, it is by standing in the footprints of giants