in reply to Re^2: Loading multiple files with YAML::XS (named streams)
in thread Loading multiple files with YAML::XS

You might want to look at Config::Any.

From the docs: 

load_files() attempts to load configuration from the list of files pas
+sed in the files parameter, if the file exists.

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The module recognizes YAML files and will parse them with the appropriate YAML library (which means you have to have it installed).

HTH

The way forward always starts with a minimal test.

In Section Seekers of Perl Wisdom