…since 6.8.1, has there been any other transfers of code away from
base into other boot-libraries? If not, then comparing it to the current version of
base could help to determine how things have (apparently) “gone awry”.
This information may not be able to help in salvaging
base, but it could help to avoid making (most of) the same mistakes, if it’s impossible to practically separate GHC and
base and the two have to be rebuilt.