rules

type Generator interface {
	// Generate generates build rules for build targets in a Go package in a
	// repository.
	//
	// "rel" is a relative slash-separated path from the repostiry root
	// directory to the Go package directory. It is empty if the package
	// directory is the repository root itself.
	// "pkg" is a description about the package.
	Generate(rel string, pkg *build.Package) ([]*bzl.Rule, error)
}