[Pkg-haskell-maintainers] Bug#639015: dh_haskell_shlibdeps adds not needed libffi5 and libgmp10 dependencies

[Matthias Klose]

Package: haskell-devscripts
Version: 0.8.8
Severity: important

$ apt-cache rdepends libffi5 | grep ghc|wc -l
283
$ apt-cache rdepends libgmp10 | grep ghc|wc -l
283

it looks like these dependencies are introduced by the script, and are only
needed for the haskell runtime. so these dependencies should be filtered out, at
least for packages like haskell-url.