Can't build shake-based nofib with GHC 9.1.0.20201210
Reproducer:
cabal new-run -- nofib-run --compiler=/Users/nineonine/Projects/ghc/_build/stage1/bin/ghc --output=test
this returns:
cabal: Failed to build primitive-0.7.1.0 (which is required by
unboxed-ref-0.4.0.0).