When you use qi::Application or qi::ApplicationsSession in your application, it automatically interprets some arguments and environment variables.
--qi-log-color
¶Enable or disable log coloring. Possible values are: auto, always, never.
--qi-log-filters
and QI_LOG_FILTERS
¶Enable log filtering, see Category filtering for syntax.
--qi-sdk-prefix
and QI_SDK_PREFIX
¶Prefix where to search for modules and libraries, see Handling Paths Guide for more details.