On Wed, Apr 9, 2014 at 2:15 PM, Michael Snoyman
However, all of these problems are solved completely by version freezing. I think we need to be honest about the PVP: it does a good job of ensuring builds succeed most of the time, but it does not solve all problems. Should should be encouraging users to be using more reliable solutions. I'm worried that people are falsely relying on the PVP as a panacea for build problems.
I think you're placing too much faith in version freezing. There should still be a good story about upgrading the dependencies of a 'frozen' package. If this will result in lots of build failures because of missing upper bounds (don't follow the PVP since we have freezing) then this will be costly. So I think even in the presence of freezing (which we don't have yet) I think the PVP is still important. Also, I don't think we're going to freeze libraries on hackage, so just installing a package to play with it will also still involve an unfrozen build. Erik