[13:00:50] <xafer> I'd say it should only upgrade to a release version greater than your prerelease, if you want a newer prerelease I guess you need "pip install -U --pre Foo" ?
[13:03:20] <agronholm> xafer: yeah that's what I did to make it work
[13:03:35] <agronholm> it just didn't hit me why it wouldn't upgrade from 1.0.0.pre5 to 1.0.0.pre6
[13:07:49] <pf_moore> agronholm: I think this was raised once before. I'd call it an arguable design decision rather than an outright bug.
[13:08:00] <pf_moore> It's just as possible that you don't want to auto-upgrade prerelease versions because prereleases are more prone to bugs.
[13:08:15] <pf_moore> Explicit is better than implicit, I guess...