[pointyhat]

It did happen: http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/cvs/

[there]

opencvs (which you linked to) is not installed by default, we still install the gnu cvs version (in gnu/usr.bin/cvs).

opencvs is run on some openbsd anoncvs mirrors, but is not used on our main cvs server nor used by many developers.