Repository format/profiles/repo name

The file (obligatory) specifies the repository name. The name assigned there is used by the package manager to refer to the contents of the repository. In case a repo-name key is given in metadata/layout.conf that one takes precedence.

File format
The repo_name file is a plain, ASCII text file containing the repository name on its only line.

For configuration files or sections in /etc/portage/repos.conf it is recommended that   is the same as the name specified here.

layman repository list
It is required that repository names in files are the same as repository names on the layman repository list. In the future, an automated check will be added to enforce that as requested in.