MixGleam

An Elixir archive that teaches Mix how to work with Gleam code and dependencies!

Installation

Install the Gleam compiler onto your machine. Installation instructions can be found here.

Install or update the MixGleam archive from Hex:

$ mix archive.install hex mix_gleam

To install or update from source:

$ mix archive.uninstall mix_gleam # if this archive was previously installed
$ git clone https://github.com/gleam-lang/mix_gleam.git
$ cd mix_gleam
$ MIX_ENV=prod mix do archive.build, archive.install

Configure your Mix project to use the MixGleam archive to work with Gleam's compiler and Gleam dependencies:

# in mix.exs
# ...
  @app :my_gleam_app

  def project do
    [
      app: @app,
      # ...
      archives: [mix_gleam: "~> 0.6"],
      compilers: [:gleam | Mix.compilers()],
      aliases: [
        # Or add this to your aliases function
        "deps.get": ["deps.get", "gleam.deps.get"]
      ],
      erlc_paths: [
        "build/dev/erlang/#{@app}/_gleam_artefacts",
        # For Gleam < v0.25.0
        "build/dev/erlang/#{@app}/build"
      ],
      erlc_include_path: "build/dev/erlang/#{@app}/include",
      # For Elixir >= v1.15.0
      prune_code_paths: false,
      # ...
    ]
  end
# ...

To see an entire example mix.exs file you can adapt to your existing Mix project:

$ mix gleam.new --retro

If you want to write Gleam code in your project, it's a good idea to add gleam_stdlib and gleeunit to your project's dependencies:

# in mix.exs
# ...
  defp deps do
    [
      # ...
      {:gleam_stdlib, "~> 0.34 or ~> 1.0"},
      {:gleeunit, "~> 1.0", only: [:dev, :test], runtime: false},
      # ...
    ]
  end
# ...

Make a src directory for your Gleam code to live in:

$ mkdir src

And add the build directory to your .gitignore file so Gleam's build artefacts are not included in your project.

To run Gleam tests from the test/ directory with :gleeunit, you can run:

$ mix gleam.test

Example

Check the test project for an example that contains both Elixir and Gleam code. See the Elixir and Gleam test files to find examples on calling Gleam code from Elixir, and vice-versa.