Function build_store_path_from_fingerprint_parts 

fn build_store_path_from_fingerprint_parts<'n>(
    ty: impl Display,
    inner_digest: &Sha256,
    name: &'n str,
) -> Result<StorePathRef<'n>, ParseStorePathError>

This builds a store path from fingerprint parts.

This is called from build_text_path, build_output_path and build_ca_path to assemble the final path.

Using the inputs, it creates a fingerprint, hashes and compresses it, then uses the passed name to create a store path.

If that name doesn’t match store path name requirements, the error is passed along.