WiX extension for burn / bootstrapper

Question

I'm using WixStandardBootstrapperApplication to create a bootstrapper installer using WiX. In it I'm using FileSearch from the WixUtilExtension library (part of a standard WiX install). I'm not quite happy with the logic it's using though, and want to do things just a little differently, but I can't find an easy way to do that. I see my options as:

1. Create my own managed bootstrapper, this would mean also creating an entire UI experience, which feels like an awful lot of yak shaving.
2. Create my own library like WixUtilExtension to inject some of my own custom logic.

I favour option 2, given that I have no interest in replacing the overall process offered by WixStandardBootstrapperApplication, but I'm having a hard time finding how to create a burn-centric extension. I can find detail about creating extensions which then get mapped to custom actions (MSI only, not burn bootstrapper), or perform other pre-processing and compiler actions which aren't relevant to my needs here.

How do I go about creating a burn extension? Would I be better off just biting the bullet and creating my own managed bootstrapper, or is there some simple option I'm missing here?

Answer 1

The closest thing to what you want is the BAFunctions.dll that Neil initially wrote for his ExtendedBA. He was able to merge most of that into WiX 3.8. There's example code in Burn's Samples directory.