Hello Alexander, Monday, August 23, 2010, 7:28:26 AM, you wrote:
If that happens, is the PVP even needed anymore? If Hackage automatically checks when packages break, couldn't it automatically determine upper bounds? Then we wouldn't need the conservative upper-bound settings.
PVP is about ensuring compatibility with future, not-yet-exist versions of library. say, i upload my program that uses SomeLib 1.0 API, and by PVP i request SomeLib 1.* if we don't rely on PVP, i should request SomeLib 1.0 and then, once SomeLib 1.1, 1.2 and so on are released, my cabal file should be updated automatically to mention that my program is compatible with new SomeLib versions another concern is that automatic check cannot ensure unchanged API, it can check only types. If you change API to accept UTF-8 encoded strings instead of Latin1-encoded ones, signatures will remain the same -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com