getting haskellmode-vim to work with a cabal project

Question

When I build a cabal project in vim, using

:set makeprg=cabal\ build
:make

haskellmode-vim doesn't seem to find the type information. Doing _t when the cursor is on foo gives me "foo type not known".

How can I get haskellmode-vim to obtain the type information from a cabal build?

Answer 1

Doing :GHCReload allows me to use _t and _T.