# Envy
A simple Elixir library to load environment variables from `.env` and
environment specific env files like `.env.dev`, `.env.test`, etc.
## Installation
Add envy to your dependencies in `mix.exs`.
```elixir
def deps do
[{:envy, "~> 1.1.0"}]
end
```
## Usage
To load env files you have two options, you can use the autoloader or give the
library paths to specific files to load itself.
Using `auto_load` you can add the following to your application in `lib/my_application.ex`:
```elixir
defmodule MyApplication do
use Application
def start(_type, _args) do
unless Mix.env == :prod do
Envy.auto_load
end
# Existing code
end
end
```
This will look for `.env` and the mix env specific file. For example if your
applications `Mix.env` is `dev` then envy will attempt to load `.env.dev`
You can also specify which files to load manually using `Envy.load` which
accepts a list of files to attempt to load.
```elixir
Envy.load([".env"])
```
To export `FOO` as `bar` you can add the following line to your env file.
```
foo=bar
```
Comments can be added with a `#`.
```
foo=bar # comments
```
If you need to use `#` in your values you can use double quotes.
```
tag="#bar" #comments
```
## Using Envy in config
If you need environment variables set by envy in `config/` files you can load
your env files with `Envy.auto_load` or `Envy.load` then call
`Envy.reload_config` to re-evaluate the config files with the correct
environment variables set.