This module appears to solve an itch that I have had in the past. The documentation example (constructing a dhcpd.conf file from little pieces) is a bit too terse though, for me to be sure. It is not clear to me how the mosaics are ordered.
What I do know is that these days, I solve these sorts of problems with either Template::Toolkit or Data::Locations. It would be helpful if the documentation explained how it works in relation to these other modules.
The module code itself is clear and easy to follow. The synopsis needs to be indented in order to have the code segment rendered literally (which in turn could benefit from the use of heredocs to make the example less noisy).