WiX 4 - bafunctions - header files?

[mtissington]

I'm upgrading from Wix 3.x and using Visual Studio 2022.
I have a project called bafunctions and uses IBootstrapperBAFunction

This was defined in the wixtoolset for 3.x and I could reference the various header files etc.

In Wix 4 how do I do this?
Where are the header files?

[BMurri]

NuGet package WixToolset.BalUtil.

Also, some changes were made (base type name changes, etc.)

You may want to search for <ProjectReference Include="WixToolset.BalUtil" in the wix sources for examples.

[mtissington]

Thanks - I found the following example

What package is required for Custom Actions?

[BMurri]

native (c++) CAs: WixToolset.WcaUtil (which itself depends on WixToolset.DUtil)
managed (c#) CAs: WixToolset.Dtf.CustomAction (which itself depends on WixToolset.Dtf.WindowsInstaller)