Add the docspec:base rule to Hadrian
Motivated by !4780 (closed), here is the inclusion of the cabal-docspec
tool as a Hadrian rule for the base
library.
Closes #17928 (closed)
@phadej I am having some trouble with phase2. Considering the following command line, generated by the Hadrian rule:
Edited by Hécate Kleidukos