Ian Lynagh just posted a link to the hackager program:
http://hackage.haskell.org/trac/ghc/wiki/HackageTesting
That seems to be pretty much what I was looking for.
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Niklas Hambüchen mail at nh2.me writes:
Reading the other thread (Adding Applicative/Functor instances to all
Monads in GHC) I was wondering if there was infrastructure for testing
what effect making the often-discussed Functor/Monad change would have:
How many packages on hackage would break
Has anyone surveyed the in-print textbooks, tutorials, or tried to
assess how much Haskell (H98, H2010, Glasgow Haskell?) is used in
teaching?
Having the wrong hierarchy is a minor annoyance to us members of the
cognoscenti, but a change outside a revision of the language standard
could leave a
There is a chicken and the egg problem with this argument.
Historically Haskell' has only considered changes that have been actually
implemented.
I would encourage the language standard to follow suit, but we survived a
similar autocratic minor change to Num with very little ecosystem
