value¶
The value definition-attribute assigns content directly. It bypasses source, parser, and selector, so use it for a literal value or a whole-value env: reference.
value: "env:NAME" looks up NAME in the process environment first, then in an earlier definition. The reference must occupy the entire value; it does not concatenate multiple variables. Definitions are evaluated in order, so place the value-producing definition before its consumer. See source for the complete env: rules.