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Example Repo

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Adding Elixir to your project​

devbox add elixir, or add the following to your devbox.json 
    "packages": [
        "elixir@latest"
    ]
This will install the latest version of Elixir. You can find other installable versions of Elixir by running devbox search elixir. You can also search for Elixir on Nixhub

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Elixir Plugin Support​

Devbox will automatically use the following configuration when you install Elixir with devbox add.

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Environment Variables​

$MIX_HOME and $HEX_HOME configure Mix/Hex to install artifacts locally, while $ERL_AFLAGS enables shell history in iex: 
MIX_HOME={PROJECT_DIR}/.devbox/virtenv/elixir/mix
HEX_HOME={PROJECT_DIR}/.devbox/virtenv/elixir/hex
ERL_AFLAGS="-kernel shell_history enabled"

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Disabling the Elixir Plugin​

You can disable the Elixir plugin by running devbox add elixir --disable-plugin, or by setting the disable_plugin field in your devbox.json: 
{
  "packages": {
    "elixir": {
      "version": "latest",
      "disable_plugin": true
    }
  }
}
Note that disabling the plugin will cause Mix and Hex to cache artifacts globally in the user’s home directory (at ~/.mix/ and ~/.hex/). This might actually be preferable if you’re developing several Elixir projects and want to benefit from caching, but does defeat the isolation guarantees of Devbox. If the plugin is disabled, it’s recommended to manually set $ERL_AFLAGS to preserve iex shell history: 
    "env": {
      "ERL_AFLAGS": "-kernel shell_history enabled"
    }
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