Hackage build fails on a build-tool-depends dependency

[nikita-volkov]

More specifically I'm having issues using the "autoexporter" util.

The Hackage build fails with the following message:

could not execute: autoexporter

The dependency on "autoexporter" is established thus.

[gbaz]

That error comes from ghc -- the build brings autoexporter into scope, but for some reason ghc fails on executing it? Don't see why offhand