validate with error with module path fails

[vic1707]

I don't know if the issue name is right or understandable sorry.

I found out that

#[nutype(validate(with = fs::exists, error = io::Error))]
struct File(PathBuf);

causes an error at the io::.
I think the macro should support that.

Current workaround

use std::io::Error as IoError; 🤷

[greyblake]

Good catch! Thanks for reporting! I will fix that.

Though, I'd like to point, that the example above is not gonna work anyway because the function passed to with = should return Result<(), Error>.
In case of fs::exists it returns Result<bool, Error>.

[vic1707]

Yup I got that too, I made a separate function to check if it exists and is a file 🙃
When opening the issue I reverted to that state and forgot to check if it compiled since I was interested by the macro parsing 🤣
That's my bad

[greyblake]

Fixed in #187