On Tue, 2009-05-12 at 18:21 -0300, Felipe Lessa wrote:
On Tue, May 12, 2009 at 10:05:55AM -0400, Isaac Dupree wrote:
I think this raises an interesting question: the newly updated (for example,)opengl package might strive to work with the existing release Haskell Platform, rather than require newer versions of other HP libraries also. Of course, cabal-install will deal with the latter too, it just leads to a few more dependency problems (& stability/testedness problems?).
I guess HP will depend on exact minor versions of the libraries. Does that mean that the new shiny OpenGL package can't depend on the old HP because it would indirectly depend on an older version of itself?
Are we encouraged to depend on HP at all, or should we always target the packages themselves and leave HP on Hackage just for completeness?
Nothing should depend on a meta-package like the haskell-platform package. The Linux distro community have plenty of experience with this and this is their policy. It overly constrains everything. In any case, the platform meta-package exports nothing so you'd have to specify dependencies on the things you use anyway. It'd be redundant except to constrain the versions of dependencies, which is exactly why people should not do it (we might make hackage enforce this if it becomes a problem). Duncan