# PersistConfig

Persists the project configuration and puts the
configured application in module attribute :app
or in a module attribute of your choice.

When your project is used as a dependency, this
package will allow your configuration to persist.
For example, if you configured some path to read
an external file and want to ensure you can still
read the file even when your app is a dependency.

However you must include file `config/config.exs`
in the package definition of file `mix.exs`:

```elixir
def project() do
  [
    app: :your_app,
    ...
    package: package(),
    ...
  ]
end
...
defp package() do
  [
    files: ["lib", "mix.exs", "README*", "config/config.exs"],
    maintainers: ["***"],
    licenses: ["***"],
    links: %{...}
  ]
end
```

## Installation

Add the `:persist_config` dependency to your `mix.exs` file:

```elixir
def deps() do
  [
    {:persist_config, "~> 0.1"}
  ]
end
```

## Usage

```elixir
use PersistConfig
@path Application.get_env(@app, :path)
...
{:ok, contents} = File.read(@path)
...
```

```elixir
use PersistConfig, app: :my_app
@my_attr Application.get_env(@my_app, :my_attr)
```