我需要帮助进行冲泡设置。我尝试过重新安装brew和ruby，但我觉得我只是让事情变得更糟。
一些信息：OS X El Capitan V.10.11.5
$ ruby -v
ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-darwin15.5.0]
$ which -a ruby
/usr/local/bin/ruby
/usr/bin/ruby
当我尝试更新brew时：
$ brew update
<internal:gem_prelude>:1:in `require': cannot load such file -- rubygems.rb (LoadError)
from <internal:gem_prelude>:1:in `<compiled>'
Error: Git must be installed and in your PATH!
当我尝试安装 ruby 时：
$ rvm install ruby
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.11/x86_64/ruby-2.3.0.
Continuing with compilation. Please read 'rvm help mount' to get more information …