if (OperatingSystem.current().isWindows) {
                commandLine = listOf("cmd.exe", "/d", "/c") + commandLine
            }
        }
        return execOutput.result.zip(execOutput.standardOutput.asText) { result, outputText ->
            if (result.exitValue == 0) outputText.trim()
            else "<unknown>" // It's a source distribution, we don't know.
        }
    }