Specifying backends via config

[sobolevn]

Right now it is only possible to specify a backend via keyword argument.
I think, that it would be a nice feature to implement basic mix config for this task.

Something like:

use Mix.Config

config :hammer, Hammer,
   backend: Hammer.Backend.ETS

[JuneKelly]

I think this would be a good line of investigation, maybe for a version2, api-breaking release.

If the backend could be configured that way, then use Hammer would be un-necessary, I think. It could just be a normal module of functions.

Can we do it without making hammer an OTP application? For some reason I thought mix configs only worked for OTP applications, but I'm happy to be wrong on that. I think I looked into something like this earlier, but I got stuck on the issue of dynamic application dependencies, but I was probably wrong in my assesment.

[sobolevn]

Can we do it without making hammer an OTP application?

I am quite sure that it is possible. Here's an example: https://github.com/samueljseay/recaptcha

[JuneKelly]

Done in v2.0.0