BREAKING CHANGE: ghcide was archived a while back and now primarily
exists as a library used in the development of haskell-language-server.
It is not recommended for end-users, only for development. To this end I
think including it in the module is more misleading than helpful, and
the people that really want to use it can easily set it up themselves.
Ref: https://github.com/haskell/ghcide/pull/939
Calling this pivotal macro "def-package!" has frequently been a source
of confusion. It is a thin wrapper around use-package, and it should be
obvious that it is so. For this reason, and to match the naming
convention used with other convenience macros/wrappers, it is now
use-package!.
Also changes def-package-hook! -> use-package-hook!
The old macros are now marked obsolete and will be removed when straight
integration is merged.
