Bump base to 4.16
GHC 9.0 will be released with base-4.15
, and the branch has been cut. So it's time we bump base
to 4.16
in HEAD.
This is needed to make progress in !3598, as it needs to tell apart the base
version in HEAD
and the latest released base
version using a CPP conditional. Currently it uses these lines:
#if MIN_VERSION_base(4,15,0)
#define HAS_TYPELITS_CHAR
#endif
But they will break as soon as GHC 9.0 is released.
Of course, the problem with bumping the base
version is that it also requires relaxing upper bounds in so many submodules. So let's do it separately from !3598