Clearly the solution for this particular conflict is just to vary the case of the first letter, like we have with the Numbers vs. numbers packages. What could be cleaner? ;) On Sun, Nov 25, 2012 at 12:59 PM, Edward Z. Yang wrote:

Hello all,

I recently noticed that there is a subset of packages on Hackage which have had a non-monotonic release in their history. Non-monotonic releases occur for various reasons; for example, http://hackage.haskell.org/package/QuickCheck-1.2.0.1 was made in 2010 (2.1 was released in 2008), ostensibly as a minor bugfix release.

However, I found at least one case where a non-monotonic release was due to package clobbering:

http://hackage.haskell.org/package/Adaptive-0.1 http://hackage.haskell.org/package/Adaptive-0.22

It's easy to see that these are two different packages. 0.1 is the "later" release, but it is completely shadowed by the old 0.22 release.

I'm not sure if I have any concrete recommendations (since this problem is mostly subsumed by the "people shouldn't be able to upload arbitrary stuff to Hackage problem); but I thought this might be interesting information to someone.

Edward

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