Resolving dependencies...
Starting     code-page-0.2.1
Starting     ghc-paths-0.1.0.12
Starting     syb-0.7.2.2
Starting     base-compat-0.13.0
Building     code-page-0.2.1
Building     syb-0.7.2.2
Building     base-compat-0.13.0
Building     ghc-paths-0.1.0.12
Completed    code-page-0.2.1
Completed    ghc-paths-0.1.0.12
Completed    syb-0.7.2.2
Completed    base-compat-0.13.0
Downloading  doctest-0.21.1
Downloaded   doctest-0.21.1
Starting     doctest-0.21.1
Building     doctest-0.21.1
Completed    doctest-0.21.1