Cool module! Turns out it's just an interface to an existing PerlIO method, so it's very efficient. (In the unlikely case that your perl don't use PerlIO, slower tie is used as a fallback.)

Unfortunately, it doesn't build on Windows. From the error CPAN testers are getting, I'm guessing it's calling a function that's meant for internal use only. The developers of Perl have been able to restrict access to these functions on Window, but not on other systems (yet).

I'll see if I confirm this.