Demonstration of my issues with export-hook

build.sbt

resolvers ++= Seq(
  Resolver.sonatypeRepo("releases"),
  Resolver.sonatypeRepo("snapshots")
)

scalaVersion := "2.11.7"

libraryDependencies ++= Seq(
  "org.typelevel" %% "export-hook" % "1.0.2",
  compilerPlugin("org.scalamacros" % "paradise" % "2.1.0-M5" cross CrossVersion.full)
)

Encoder.scala

import export._

trait Encoder[T] {
  // Type class defns ...
}

object Encoder extends EncoderLowPriority {
  // Instances which should be higher priority than derived
  // or subclass instances should be defined here ...
}

// Derived, subclass and other instances of Encoder are automatically included here ...
@imports[Encoder]
trait EncoderLowPriority {
  // Instances which should be lower priority than imported
  // instances should be defined here ...
}