Matthew Pickering authored Jun 22, 2022 and Marge Bot committed Jul 05, 2022

Adding filepath as a dependency of template-haskell means that it can't
be reinstalled if any build-plan depends on template-haskell.

This is a temporary solution for the 9.4 release.

A longer term solution is to split-up the template-haskell package into
the wired-in part and a non-wired-in part which can be reinstalled. This
was deemed quite risky on the 9.4 release timescale.

Fixes #21738