Note initial addition of p5-Proc-Background version 1.08 as
devel/p5-Proc-Background into The NetBSD Packages Collection.

The Perl 5 module Proc::Background provides a generic interface for
placing processes in the background on both Unix and Win32 platforms.
Background processes can be started, killed, waited upon, checked
for existence and their exit values can be retrieved.

(seb)