This reverts commit a3002104a84c60556b6616d100cb98019e48759d, which breaks certain system configurations like: $ guix system reconfigure config.scm guix system: error: the following groups appear more than once: lp
This reverts commit a3002104a84c60556b6616d100cb98019e48759d, which breaks certain system configurations like: $ guix system reconfigure config.scm guix system: error: the following groups appear more than once: lp