Data instance for Data.Version

[Administrator]

> Hi,
>
> Can we derive Data for Data.Version.Version? It would benefit Cabal.
>
> Thanks,
> David

On a related note, what about also moving some (maybe all) of the nice
Distribution.Version related functions from the Cabal package to
Data.Version? I am sure other libraries would also be interested in
using this functionality without having to include Cabal as a whole.
One example is the Ghc runtime itself: this could be one small step in
removing dependencies from Ghc to Cabal.