envvar 0.1.1

This tiny crate provides the `var()` function which is the same as `std::env::var()` but the `NotPresent` variant of `VarError` provides the name of the missing environment variable
Documentation

This tiny crate provides the var() function which is the same as std::env::var but the NotPresent variant of VarError provides the name of the missing environment variable:

pub enum VarError {
    NotPresent(String),
    NotUnicode(OsString),
}