Bug 2069661 made findobject load a linter's payload module from the file next to its .yml rather than importing it by name. That assumes the definition and the module it names sit in the same directory, which does not hold for comm-central. Take a linter_paths lintarg, listing extra directories to search after the definition's own. A payload is still loaded from a known linter directory and not from sys.path. Differential Revision: https://phabricator.services.mozilla.com/D324197