-- | Set the image used for the header splash. Pass 'Nothing' to use the default header image.
--
-- > headerImage $ Just "$NSISDIR/Contrib/Graphics/Header/win.bmp"
headerImage :: Maybe (Exp FilePath) -> Action ()
headerImage Nothing = emit $ HeaderImage Nothing
headerImage :: Maybe (Exp FilePath) -> Action ()
headerImage Nothing = emit $ HeaderImage Nothing
headerImage Nothing = emit $ HeaderImage Nothing