robe setup for Linuxbrew

env.el

;;; Code:

(defun my/shell-command-to-string (command)
  "Return output of COMMAND without newline."
  (substring (shell-command-to-string command) 0 -1))

(setenv "HOMEBREW_PREFIX" (my/shell-command-to-string "brew --prefix"))
(setenv "HOMEBREW_BREW_FILE" (concat (getenv "HOMEBREW_PREFIX") "/bin/brew"))
(setenv "HOMEBREW_CELLAR" (my/shell-command-to-string "brew --cellar"))
(setenv "HOMEBREW_CACHE" (my/shell-command-to-string "brew --cache"))
(setenv "HOMEBREW_REPOSITORY" (my/shell-command-to-string "brew --repo"))
(setenv "HOMEBREW_LIBRARY" (concat (getenv "HOMEBREW_REPOSITORY") "/Library"))

;; then require('package') in pry buffer

;;; env.el ends here

Gemfile

lib = File.expand_path('../Library/Homebrew', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)

source 'https://rubygems.org'

ruby '2.4.0'
#ruby-gemset=linuxbrew

gem 'method_source'
gem 'pry'
gem 'pry-doc'