Dotenv

Small, proc-macro crate that bakes environment variables from a .env file into the compiled binary. The dotenv!() macro is used the same as the built-in env!() macro, and the dotenv_option!() macro is used the same as option_env!().

Usage

.env file

FOO=BAR

In rust:

const FOO = dotenv!("FOO");

dotenv!("FOO") will expand at compile time to a &'static str of whatever FOO is set to in the .env file (in this case "bar").