A few months ago I posted about how GNU Hurd CPAN-testers had over-taken VMS and were catching up with OS/2. Well, ...
> select count(*) c, os from cpanstats group by os order by c desc; 3071,'HP-UX' 607,'SCO' 350,'MirOS BSD' 323,'GNU Hurd' 230,'OS390/zOS' ... 87,'AIX' ... 18,'OS/2' ...