As usual, it is recommended to rebuild or reinstall all the
dependent ports and the lang/ghc port itself in one of the following
ways:
# portmaster -w -r ghc
or
# portupgrade -fr lang/ghc
In case of pkg(8), it is probably safer to remove all the GHC-dependent
packages along with GHC and reinstall everything from scratch. For
example:
# pkg query "%ro" ghc > ghc-pkgs.txt
# pkg delete -y lang/ghc
In ghc-pkgs.txt, check and remove all the packages that have been moved
on the update, then use this command:
# pkg install -y `cat ghc-pkgs.txt`
Approved by: tcberner (mentor)
Differential Revision: https://reviews.freebsd.org/D16038
98ae1eaf36