/etc/portage/repos.conf

can be a file or directory of files that specifies site-specific repository configuration information. Configuration specified in can be overridden by the   environment variable, which has the same format as

Format

 * Comments begin with  (no inline comments)
 * Configuration of each repository is specified in a section starting with
 * Attributes are specified in  format

External resources

 * news-items 2015-02-04 portage-sync-changes