tests/Data/Text/Zipper/Generic/WordsSpec.hs:15:1: error:
Ambiguous interface for ‘Data.Text.Zipper.Generic.Words’:
it was found in multiple packages:
text-zipper-0.10 hledger-iadd-1.1.4
Yes, text-zipper now includes this module. I will remove it from hledger-iadd later today -- in the meantime compile it without tests or use an older text-zipper.
Citing from http://hydra.nixos.org/build/47699412/nixlog/1/raw: