Hi In the hint [1] package I need to run ghc --print-libdir at configure time and save its result. The catch is that I need to run exactly the same ghc binary that will build the package (i.e. not necessarily the one in the path). Because of this requirement I can't use a "configure" script as advised in the docs [2], can I? What I did, instead, is to write a posthook that takes the information in the LocalBuildInfo and runs the ghc configured there. The downside is that this it is not portable across Cabal versions (incidentally, if I add the requirement cabal-version: >= 1.2 && < 1.3, hackage refuses to upload the package...) So my question is, what would be the proper way to handle this? Thanks Daniel [1] http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hint-0.2 [2] http://www.haskell.org/cabal/release/latest/doc/users-guide/ x30.html#system-dependent