It seems that phabricator is not picking up haddock commits for builds. I rebased my D538 diff, with matching haddock submodule Subproject commit 54c5e7cd0b5844712301cacc826a6b112dbc1090 However, the build fails with an error in haddock which is explictly patched in the haddock repo. Up until last week this process worked fine, and was recently recommended on this mailing list. Has something changed now that it is a RC? Failing build: https://phabricator.haskell.org/harbormaster/build/2762/ Changed line in haddock branch https://github.com/haskell/haddock/commit/54c5e7cd0b5844712301cacc826a6b112d... Regards Alan