Module fs 

Filesystem primitives the lifecycle services share.

Hashing, guarded destination checks, and parent-creating writes — the mechanics only. Which destinations exist and what to do about a refusal is the installer’s and upgrader’s business.

Enums

DestinationRefusal

Why a destination cannot be touched.

Functions

check_destination

Check that touching destination under target stays inside the target.

sha256_file

Hash a file’s bytes.

write_file

Write a file, creating its parent directories.