pub fn runtime_cache_path() -> Option<PathBuf>Expand description
The runtime cache segment, cache/0: one container holding every
regenerable artifact the running application produces for its own later
launches, indexed by producer and key. Resolves under the writable-state
dir, since a shipped install’s content root may be read-only.
Deletable at any time; whatever is missing is recomputed. The running application writes this file and no other, so a concurrent build writing a segment of its own never shares a file with it.