apiMappings does not seem to work with unidoc task

[taylorleese]

If I run sbt doc references are resolved correctly based on my apiMappings. If I run sbt unidoc then references are not resolved.

I have tried the following:

apiMappings in unidoc := apiMappings.value,
apiMappings in ScalaUnidoc := apiMappings.value,
apiMappings in unidoc := (apiMappings in (Compile, doc)).value,
apiMappings in ScalaUnidoc := (apiMappings in (Compile, doc)).value,
apiMappings in (ScalaUnidoc, unidoc) := (apiMappings in (Compile, doc)).value,
mySettings ++ inTask(unidoc)(Seq(
  apiMappings in ScalaUnidoc := (apiMappings in (Compile, doc)).value
))

[taylorleese]

This may be similar to #5.

[taylorleese]

Most of my attempts are based on what I found in the Akka project where I assume they are attempting to solve a similar problem, but I haven't been able to solve it yet. (see https://github.com/akka/akka/blob/master/project/Unidoc.scala#L19).