outputDir().let { outputDir ->
            compileProgramTo(outputDir, program, sourceHash, programKind, programTarget)
            withClassLoaderFor(outputDir) {
                val executableProgram = loadClass("Program").getDeclaredConstructor().newInstance()
                action(executableProgram as ExecutableProgram)
            }
        }
    }

    private
    fun compileProgramTo(
        outputDir: File,