GHC HEAD's error messages are no longer colorized
This is a regression that I've bisected to commit b3df9e78 (Remove PprStyle param of logging actions
). It's difficult to give more information than that, since GitLab won't display the colors, but try compiling a ill typed program like the one below before and after that commit:
module Foo where
f :: Int
f = "abc"
You'll notice the absence of colors after that commit. cc @hsyl20