Is anybody on 9.6.1 having problems profiling on a Mac? As I reported in https://gitlab.haskell.org/ghc/ghc/-/issues/23211 

ghc -prof -fprof-auto hello.hs

where the file hello.hs consists of the line: 

main = print "hello"

gets the error:

Could not find module ‘Prelude’
 Perhaps you haven't installed the "p_dyn" libraries for package ‘base-4.18.0.0’?

It seems to me like a regression of the closed bug https://gitlab.haskell.org/ghc/ghc/-/issues/20707. 

Thanks
George