Autolib/Output/Type.hs:116:14: error: [GHC-87543] Ambiguous occurrence ‘Empty’.

ghc-9.12:

Autolib/Output/Type.hs:116:14: error: [GHC-87543]
    Ambiguous occurrence ‘Empty’.
    It could refer to
       either ‘Data.Text.Empty’,
              imported from ‘Data.Text’ at Autolib/Output/Type.hs:14:1-16,
           or ‘Autolib.Output.Type.Empty’,
              defined at Autolib/Output/Type.hs:49:15.
    |
116 |     mempty = Empty
    |              ^^^^^