While "tie" in perldoc allows tying to an arbitrary object, the class in question must support this in it's implementation of TIEHASH, TIEARRAY or whatever. This class provides a very tie constructor that simply returns the object it was given as it's first argument. This way side effects of calling $object->TIEHASH are avoided. This is used in Data::Visitor in order to tie a variable to an already existing object. This is also useful for cloning, when you want to clone the internal state object instead of going through the tie interface for that variable.
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.