rors.
On Unix, the implementation is done by a
<a href="/pkg/syscall/#Errno"><code>syscall.Errno</code></a> type
that satisfies <code>error</code> and replaces the old <code>os.Errno</code>.
</p>

<p>
The changes affecting <code>os.EINVAL</code> and relatives are
described <a href="#os">elsewhere</a>.

<p>
<em>Updating</em>:
Running <code>go</code> <code>fix</code> will update almost all code affected by the change.
Regardless, most code should use the <code>os</code> package
rather than <code>syscall</code