Hey richard,
I'm having a test failure on my mac with pty.t, just like this tester reported.
http://www.nntp.perl.org/group/perl.cpan.testers/316448
The behaviour and diagnostics are identical. If you could give it a look, that'd
be fantastic. I tracked down the 'permission denied' warning to a call to pty_allocate(),
but i wasn't able to find that call anywhere in the source, so i'm not sure where it's
coming from.
The rest of the module seems to be working fabulous, so kudos on getting it out!