rbenv.el

Use rbenv to manage your Ruby versions within GNU Emacs.

Installation

• Native:

  1. Clone this repo.

  2. Add into init.el:

     (add-to-list 'load-path (expand-file-name "/path/to/rbenv.el/"))
     (require 'rbenv)
     (global-rbenv-mode)

• package.el:

  (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
  (package-initialize)
  
  (unless package-archive-contents
    (package-refresh-contents))
  
  (unless (package-installed-p 'rbenv)
    (package-install 'rbenv))
  
  (require 'rbenv)
  (global-rbenv-mode)

• use-package:

  (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
  
  (package-initialize)
  
  (unless package-archive-contents
    (package-refresh-contents))
  
  (use-package rbenv
    :ensure t
    :config (global-rbenv-mode))

Usage

• global-rbenv-mode — activate / deactivate rbenv.el (The current Ruby version is shown in the modeline).
• rbenv-use-global — activate your global Ruby interpreter.
• rbenv-use — allows you to choose what Ruby version you want to use.
• rbenv-use-corresponding — searches for .ruby-version and activates the corresponding Ruby interpreter.

Configuration

rbenv installation directory

By default rbenv.el assumes that you installed rbenv into ~/.rbenv. If you use a different installation location you can customize rbenv-installation-dir variable to search in the right place:

(customize-set-variable 'rbenv-installation-dir "/usr/local/rbenv")

IMPORTANT: Currently you need to set this variable before you load rbenv.el:

(use-package rbenv
  :ensure t
  :init
  (customize-set-variable 'rbenv-installation-dir "/usr/local/rbenv")
  :config (global-rbenv-mode))

The modeline

rbenv.el will show you the active Ruby in the modeline. If you don't like this feature you can disable it:

(customize-set-variable 'rbenv-show-active-ruby-in-modeline nil)

The default modeline representation is the Ruby version (colored red) in square brackets. You can change the format by customizing the variable rbenv-modeline-function:

;; this will remove the colors
(customize-set-variable 'rbenv-modeline-function 'rbenv--modeline-plain)

You can also define your own function to format the Ruby version as you like.

Press

If you want to read more about rbenv.el check out the following links:

• Use the right Ruby with emacs and rbenv by Yves Senn