Constant OPENCODE_CONFIG_CONTENT 

pub const OPENCODE_CONFIG_CONTENT: &str = "OPENCODE_CONFIG_CONTENT";

The environment variable opencode reads a whole configuration from, merged over the file in its home, checked against 1.18.31: the program’s text holds process.env.OPENCODE_CONFIG_CONTENT and logs loaded custom config from OPENCODE_CONFIG_CONTENT when it is set.