Portablity isn&#x27;t even hard. Some maintainers just have a tendency to get huffy and say &quot;but I&#x27;ve always used Linux, so all Linuxisms are correct&quot; - I think this tendency derives from GNU&#x27;s entirely deliberate use of embrace-and-extend tactics with its ecosystem of GPLed code.<p>But that&#x27;s OK. We have a ports tree, we don&#x27;t need upstream.