[Haskell-beginners] cabal binary packages

[harry]

I need to build some software on a server, but it doesn't have enough spare
memory for compiling all the dependencies. I would like to create a binary
distribution of e.g. snap including all of its dependencies (other than
those which come with ghc), so that the server can just install them. I
found
http://www.haskell.org/cabal/users-guide/installing-packages.html#creating-a-binary-package,
but this seems to have two deficiencies - the destination prefix needs to be
know in advance (which might be OK if it can be a relative path), and it has
to be done individually for each package.