In logback-spring.xml I know it's possible to access environment properties (in my case the active profile) with but I'm looking for the groovy equivalent.
There's no equivalent for logback.groovy. As things stand, if you want to access the environment or the active profiles in your logging configuration you'll need to use logback-spring.xml.
If you'd like to see equivalent support in logback.groovy, please open an enhancement request.