pub const SCOUT_COMPILER_ENGINE: &str = "SCOUT_COMPILER_ENGINE";Expand description
The engine locator environment variable: the path to the engine
executable compiler-facts run spawns. Read only from this module, with
no default and no download – a missing engine exits non-zero with one
line and leaves any already-admitted artifact untouched. Named
distinctly from the unrelated, unshipped SCOUT_SEMANTIC_TOOL locator a
different design note proposes for a different, still-unbuilt cache, so
the two invocation paths can never be confused once both exist.