Hi, I'd like to provide tests for my Cabal project, and would like to do so by having >another< Cabal project in a tests/ directory that is built and run by "Cabal test". I've got this far towards getting it working: """" main :: IO () main = defaultMainWithHooks (simpleUserHooks { runTests = buildAndRunTests }) buildAndRunTests :: Args -> Bool -> PackageDescription -> LocalBuildInfo -> IO () buildAndRunTests _ _ _ local_build_info = do test_package_description <- fmap flattenPackageDescription $ readPackageDescription normal "./tests/test-package.cabal" let [executable] = executables test_package_description build test_package_description local_build_info defaultBuildFlags [] system $ modulePath executable """ This kind of works, but the local_build_info is obviously wrong as it is for the package being compiled rather than the one I >want< to compile. What I'm really hoping Cabal provides or is able to provide is a way to configure the tests package using the old LBI such that the same tools (e.g. compiler, hc-pkg etc) that were used for this package are used for the tests one while leaving everything else at it's default value. I could then use the resulting LBI to build the tests as I desire. Any pointers or suggestions for alternative ways I should be going about this are gratefully recieved! Max