supply

type Cache interface {
	Metadata() *cache.Metadata
	Restore() error
	Save() error
}

type Command interface {
	Execute(string, io.Writer, io.Writer, string, ...string) error
	Output(string, string, ...string) (string, error)
	Run(*exec.Cmd) error
}

type IndentedWriter struct {
	// contains filtered or unexported fields
}

type Installer interface {
	InstallDependency(libbuildpack.Dependency, string) error
	InstallOnlyVersion(string, string) error
}

type LinuxTempDir struct {
	Log *libbuildpack.Logger
}

type Manifest interface {
	AllDependencyVersions(string) []string
	DefaultVersion(string) (libbuildpack.Dependency, error)
}

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

type Supplier struct {
	Stager    Stager
	Manifest  Manifest
	Installer Installer
	Log       *libbuildpack.Logger
	Versions  Versions
	Cache     Cache
	Command   Command
	TempDir   TempDir
	// contains filtered or unexported fields
}

type TempDir interface {
	CopyDirToTemp(string) (string, error)
}

type Versions interface {
	SetBundlerVersion(string)
	GetBundlerVersion() string
	CheckBundler2Compatibility() (bool, error)
	Engine() (string, error)
	Version() (string, error)
	JrubyVersion() (string, error)
	RubyEngineVersion() (string, error)
	HasGemVersion(gem string, constraints ...string) (bool, error)
	VersionConstraint(version string, constraints ...string) (bool, error)
	HasWindowsGemfileLock() (bool, error)
	Gemfile() string
}