Package version on Hackage can be overloaded with multiple revisions, nonetheless Hacakge web ui doesn’t have any sign how many revisions a package version has.
I discovered the issue after trying to understand why hslogger is not working for me on ghc901, mean while issues is closed and there is no any commit or release!
The Hackage web UI does show the revisions for a package. For instance,
lens-5.0.1 currently has 1 revision. From https://hackage.haskell.org/package/lens-5.0.1:
If you click on
Revision 1 here, you’re taken to Metadata revisions for lens-5.0.1 | Hackage, which is a list of all revisions.
There are some nice things about revisions, although I agree they are quite unintuitive and surprising. I sometimes wonder if the Haskell ecosystem would be better without them.