The Perl 5 module Readonly::XS is a companion module to the Readonly module. You do not use Readonly::XS directly. Instead, once it is installed, the Readonly module will detect this and will use it for creating read-only scalars. This results in a significant speed improvement. This does not speed up read-only arrays or hashes.
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.