withoutboats / configure Goto Github PK

There is envy project, which looks just like configure and I fail to find what makes these two different. Could you, please, compare them?

First of all thanks for this crate, I like it!

The scoping of environment variable names by the name of the struct implementing Configure is nice in general, but sometimes I want to extract unscoped, global environment variables to use for configuration.

For example it would be convenient to be able to use the same DATABASE_URL env variable as the diesel cli. What already works is to add a #[configure(name = "")] annotation to the struct, but then all fields are unscoped.

A straightforward way to implement this would be a new annotation, maybe something like no_prefix:

#[derive(Deserialize, Debug, Configure)]
struct MyAppName {
    host: String, // would be MY_APP_NAME_HOST
    #[configure(no_prefix)]
    database_url: String, // just DATABASE_URL
}

I mainly have environment variables as a source in mind, but I can imagine this working in other contexts.

If I manage to free up some time I would be willing to document the existing way if there is one, or to implement the new option :)

How do I use configure in my project?

I take it that this is this crate: https://crates.io/crates/configure

Could you link the repository?

Thanks!

error[E0244]: wrong number of type arguments: expected 1, found 2
 --> src\config.rs:8:30
  |
8 | #[derive(Debug, Deserialize, Configure)]
  |                              ^^^^^^^^^ expected 1 type argument

any ideas?