[Haskell-beginners] Build setup with dynamic linkining

[harry]

I've removed the static libraries from a machine to save space, and
configured cabal to build both libraries and executables dynamically. This
works for everything except packages with Custom build-type (e.g. Happy),
when cabal-install will try to build setup against the non-existent static
libraries.

Is there any way to force cabal to build dist/setup dynamically?