Failing test suite (incomplete?)

[danwdart]

Hello, found this - it's probably why Nix marks it as broken?

Preprocessing test suite 'tests' for cf-0.4.2..
Building test suite 'tests' for cf-0.4.2..
[1 of 1] Compiling Main             ( tests/Tests.hs, dist/build/tests/tests-tmp/Main.o, dist/build/tests/tests-tmp/Main.dyn_o )

tests/Tests.hs:6:1: error:
    Could not find module ‘Math.ContinuedFraction.Effective’
    Perhaps you meant
      Math.ContinuedFraction.Interval (from cf-0.4.2)
      Math.ContinuedFraction.Simple (from cf-0.4.2)
    Use -v (or `:set -v` in ghci) to see a list of the files searched for.
  |
6 | import Math.ContinuedFraction.Effective
  | 

Perhaps it's incomplete or something?

Thanks