mail/mailman and check_perms/SPECIAL_PERMS

[Edgar Fuß <ef%math.uni-bonn.de@localhost>]

It looks to me that installing mail/mailman relies on mailman's check_perms 
script in order to set the special (mostly group mailman and g+s) 
owners/permission in the lib/mailman directory.

On our setup however, this fails because check_perms also wants to check 
var/db/mailman, which, being an NFS mount, it fails to descend into as root is 
NFS-mapped to nobody.

Is there any compelling reason to use mailman's check_perms script instead of 
pkgrsrc's builtin mechanisms (SEPCIAL_PERMS, if I remember correctly)? Am I 
missing something?