haskell-diagrams-gtk is marked for autoremoval from testing

[Debian testing autoremoval watch]

haskell-diagrams-gtk 1.3.0.2-3 is marked for autoremoval from testing on 2017-08-19

It (build-)depends on packages with these RC bugs:
867472: haskell-diagrams-cairo: haskell-diagrams-cairo FTBFS: Variable not in scope