This is Perl module Ukigumo::Common.

INSTALLATION

Ukigumo::Common installation is straightforward. If your CPAN shell is set up,
you should just be able to do

% cpan Ukigumo::Common

Download it, unpack it, then build it as per the usual:

% perl Makefile.PL
% make && make test

Then install it:

% make install

DOCUMENTATION

Ukigumo::Common documentation is available as in POD. So you can do:

% perldoc Ukigumo::Common