Hadrian should not build a stage0 haddock, especially in the quick flavour.

Summary

Currently hadrian in the quick flavour builds haddock at stage0:

/--------------------------------------------------------------------------\
| Successfully built program 'haddock' (Stage0).                           |
| Executable: _boot_native/stage0/bin/haddock.exe                          |
| Program synopsis: A documentation-generation tool for Haskell libraries. |
\--------------------------------------------------------------------------/

But later builds it again at stage1.

Expected behavior

I wouldn't expected haddock to be built at all using the quick flavour. But even less so twice.

Environment

• GHC version used: master