# `mix loadconfig`
[🔗](https://github.com/elixir-lang/elixir/blob/v1.20.5/lib/mix/lib/mix/tasks/loadconfig.ex#L5)

Loads and persists the given configuration.

    $ mix loadconfig path/to/config.exs

Any configuration file loaded with `loadconfig` is treated
as a compile-time configuration. This means all application
keys are merged into their respective applications, however
the values themselves are not deep merged.

`config/config.exs` is **always loaded automatically**
by the Mix CLI when it boots. `config/runtime.exs` is loaded
automatically by `mix app.config` before starting the current
application. Therefore there is no need to load those config
files directly.

This task is automatically re-enabled, so it can be called
multiple times to load different configs.

---

*Consult [api-reference.md](api-reference.md) for complete listing*