First release in a very long time.
I first wrote this around 2006 but it stopped working at some point. I think I've got it working correctly now and updated it to use modern Objective-C syntax.
Unzip FinkInfoFile.mdimporter.zip then move to ~/Library/Spotlight or /Library/Spotlight and run mdimport /sw/fink (or wherever you keep your fink tree).
See README.txt for more usage info.
The importer should work on 10.7 or later, but the included project can only be built with Xcode 5 on 10.9. It may build with Xcode 5 on 10.8, but I haven't tried.