Repology.org domain is on registrar hold and resolves to 127.0.0.1, though the underlying server remains operational. This causes API clients like Renovate's repology datasource to fail with connection errors.
A Renovate maintainer describes the Config Debugger tool, which helps users understand how their Renovate configuration is applied by showing intermediate results through the config pipeline. The tool addresses the complexity of Renovate's 486+ configuration options and their precedence rules, which often confuse users and lead to unexpected PR behavior.