Does `canonicalize` [1] not work in place of `realpath`? You have a couple of helper functions, like `s` and `str` which you might consider using `to_str` and

Does `canonicalize` [1] not work in place of `realpath`? You have a couple of helper functions, like `s` and `str` which you might consider using `to_str` and `to_string` in their place, as it's more idiomatic to use them directly rather than save characters. And obviously you can replace `getenv` with `env::var`. 1: https://doc.rust-lang.org/std/path/struct.Path.html#method.canonicalize https://doc.rust-lang.org/std/path/struct.Path.html#method.c...