aeson patch doesn't include revision
https://hackage.haskell.org/package/aeson-1.5.6.0/revisions/, thus forcing solver to pick something weird
Edited by Oleg Grenrus
Due to a large amount of spam we do not allow new users to create repositories, they are "external" users. If you are a new user and want to create a repository, for example for forking GHC, open a new issue on ghc/ghc using the "get-verified" issue template
https://hackage.haskell.org/package/aeson-1.5.6.0/revisions/, thus forcing solver to pick something weird