Get LocalBuildInfo in pre-test hook

[pikajude]

I've asked in #haskell and nobody seems to know the answer to this. What's the right way to get the current LocalBuildInfo in the preTest hook?

[23Skidoo]

/cc @dcoutts

[ezyang]

There doesn't seem to be a state-sponsored way. But you can connive to get it yourself using getBuildConfig. You'll need to have your overridden UserHooks ready, as well as the dist location from testDistPref. If it breaks, you get to keep all the pieces.