Path

E.Path is the only path type effecton code touches: an immutable value that joins with /, compares, hashes and sorts, and exposes parent, parents, name, suffix, stem and parts. Unlike pathlib.Path it has no I/O methods, so a path can never reach the disk on its own; every read and write goes through E.FileSystem. Joining follows the standard library's rules: an absolute right-hand side replaces the left, and redundant separators collapse.

config
 = E.Path("/repo") / ".changeset" / "config.toml"
config.parent  # Path('/repo/.changeset')
config.suffix  # '.toml'

This repo's ruff config bans pathlib, os.path, shutil, tempfile and the os file functions outside the FileSystem and Process modules, so all code goes through E.FileSystem, E.Process and E.Path.