install_gem_setup_path!: Require rubygems for Linuxbrew (#418)
install_gem_setup_path!: Require rubygems for Linuxbrew (#418)

Fix Error: uninitialized constant Homebrew::Gem

maxim-belkin/brew,hanxue/linuxbrew,Linuxbrew/brew,Linuxbrew/brew,Linuxbrew/brew,Linuxbrew/brew,maxim-belkin/brew,hanxue/linuxbrew,hanxue/linuxbrew,maxim-belkin/brew