| COMPASS_PATH | Path to the compass script. If not specified it is assumed that compass is available in the PATH. |
| COMPASS_CONFIGS | Path to config.rb files. If not specified, the whole project directory is scanned. |
| COMPASS_REQUESTCHECK_DEBUG_ONLY | Check the configs with each request only in debug mode. Default: True |
| COMPASS_DEBUG_ONLY | Disable the extension completely if not in debug mode. |
| COMPASS_SKIP_MTIME_CHECK | Don’t check the mtimes of the source and target folder of each compass project but instead just execute compass. Default: False |