[Haskell-cafe] how to determine the dependency versions before packaging and submitting to hackage

i plan to submit a package to hackage. i run it on my machine with a cabal file which has for all dependencies "any" (except for base, where it says >=4.0 -- see previous discussion on haskell-cafe). i am not certain, if my code runs agains any version, but i fear it is too restrictive to say >= "current version", which could exclude too much? testing against all previous versions of the packages seems complicated and very time consuming. what is the advice in this case? thank you andrew