From what I've gleaned, CONFIG_FILE (and LMS_CFG and STUDIO_CFG environment variables) supercedes CONFIG_ROOT. There's no code anymore that reads the value of the CONFIG_ROOT django setting, and in turn the CONFIG_ROOT environment variable. Tangentially related to DENG-369
CMS (Content Management System) ------------------------------- This directory contains code relating to the course management portal for edX, also known as Studio.