mix.el

Emacs Minor Mode for Mix, a build tool that ships with Elixir.

Demo

Select MIX_ENV and add custom params (MIX_ENV=dev mix help hex.config)

C-u C-u C-u C-c d e

Select a project and run a command (mix clean inside of subproject)

C-c d d e

Installation

MELPA

Set up the MELPA or MELPA Stable repository if you haven't already and install with M-x package-install RET mix RET.

Or you can use use-package:

(use-package mix
  :config
  (add-hook 'elixir-mode-hook 'mix-minor-mode))

From file

Add mix.el to your load path:

(add-to-list 'load-path "path/to/mix.el")

Setup

Add a hook to the mode that you're using with Elixir, for example, elixir-mode:

(add-hook 'elixir-mode-hook 'mix-minor-mode)

Set compilation-scroll-output to non-nil to scroll the mix buffer window as output appears. The value ‘first-error’ stops scrolling at the first error, and leaves point on its location in the mix buffer. For example:

(setq compilation-scroll-output t)

Usage

C-c d e - mix-execute-task - List all available tasks and execute one of them. It starts in the root of the umbrella app. As a bonus, you'll get a documentation string because mix.el parses shell output of mix help directly. Starts in the umbrella root directory.

C-c d d e - mix-execute-task in an umbrella subproject - The same as mix-execute-task but allows you choose a subproject to execute a task in.

C-c d t - mix-test - Run all test in the app. It starts in the umbrella root directory.

C-c d d t - mix-test in an umbrella subproject - The same as mix-test but allows you to choose a subproject to run tests in.

C-c d o - mix-test-current-buffer - Run all tests in the current buffer. It starts in the umbrella root directory.

C-c d d o - mix-test-current-buffer in an umbrella subproject - The same as mix-test-current-buffer but runs tests directly from subproject directory.

C-c d f - mix-test-current-test - Run the current test where pointer is located. It starts in the umbrella root directory.

C-c d d f - mix-test-current-test in an umbrella subproject - The same as mix-test-current-test but runs a test directly from subproject directory.

C-c d l - mix-last-command - Execute the last mix command.

These are all commands that I use most frequently. You can execute any mix tasks (credo, dialyzer etc) available in the project using mix-execute-task. If you have suggestions for additional commands to add keybindings to, please create an issue.

To change prefix (default C-c d) use:

 (define-key mix-minor-mode-map (kbd ...) 'mix-minor-mode-command-map)

Prefixes to modify commands before execution

Add these prefixes before commands described in the previous section.

C-u - Choose MIX_ENV env variable.

C-u C-u - Add extra params for mix task.

C-u C-u C-u - Choose MIX_ENV and add extra params.

For example, to create a migration in a subproject you should press:

C-u C-u C-c d d e:

1. C-u C-u - to be prompted for migration name
2. C-c d d e - to select a mix project and ecto.gen.migration task