Is Hackage open-source-only? [closed]

Question

Most of the packages I have seen on Hackage are libaries released with open-source licenses and I think I have faint memory of a hackage upload with a missing license field triggering a bashing from hackage.haskell.org about not using an open-source license.

1. Is there a rule that says every package hosted on Hackage is required to be made available under an open-source license?

2. If you claim that there is such a rule, how does http://hackage.haskell.org/packages/archive/Cabal/1.14.0/doc/html/Distribution-License.html relate?

Answer 1

You may use any license you like. That's what the OtherLicense constructor of License is for. That said, Hackage is a source distribution hub, so keep that in mind if you don't want people looking at your source.