Control: severity 969648 serious Control: tags 969650 pending Control: tags 972033 pending
Python 3.9 related breakage has been declared RC, so if nobody objects, I intend to upload pandas 1.1 to unstable (possibly tonight, but it probably won't build before numpy and matplotlib are binNMUd for Python 3.9) despite the dask breakage.
As noted in #969648, it is likely that dask can be fixed, but this has not been tested in Debian. (Testing dask also currently fails for lack of a Python 3.9 numpy.)
