I work on garbage, a project that touches the filesystem a lot. Because of this, I’d really like to control when and where these filesystem accesses happen.

The Rust standard library has a fs module, which I expect to exclusively contain filesystem access primitives. But actually a lot of the functionality also gets leaked into std::path::Path.

In my ideal world, Path only deals with the data in a path, not its interaction with the filesystem. So it should never be able to check whether or not a path exists, for example, or if a path is a symlink. Those should be delegated to something within fs.

In addition, many of these functions automatically resolve symlinks, without built-in ways of achieving the same functionality without resolving symlinks, so I ended up having to fill those in myself. For example, I really just expect canonicalize to be an in-memory manipulation of path components.

Honestly, I’ve got to give it to Python’s pathlib, which solves the problems I noted above. It splits the path API into Path and PurePath, the latter of which does not make any IO accesses. It also provides non-symlink-resolving and symlink-resolving variants of converting to absolute paths.