finalize

type Command interface {
	Execute(string, io.Writer, io.Writer, string, ...string) error
	Output(dir string, program string, args ...string) (string, error)
}

type Finalizer struct {
	Stager         Stager
	Log            *libbuildpack.Logger
	Logfile        *os.File
	Manifest       Manifest
	Command        Command
	ManagePyFinder ManagePyFinder
	Requirements   Reqs
}

type ManagePyFinder interface {
	FindManagePy(dir string) (string, error)
}

type Manifest interface {
	RootDir() string
}

type Reqs interface {
	FindAnyPackage(buildDir string, searchedPackages ...string) (bool, error)
	FindStalePackages(oldRequirementsPath, newRequirementsPath string, excludedPackages ...string) ([]string, error)
}

type Stager interface {
	BuildDir() string
	DepDir() string
	DepsIdx() string
	WriteProfileD(string, string) error
}