Fork循环在OS X 10.7上使用RVM安装Ruby 1.9.3

Question

当尝试使用RVM在我的OS 10.7 MBP上安装Ruby 1.9.3时，我得到一个无限循环，因为它试图找到另一个Ruby来执行安装：

$ rvm system
$ rvm install 1.9.3
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.7/x86_64/ruby-1.9.3-p448.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.

Warning! Requested ruby installation which requires another ruby available - installing one first.

Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.7/x86_64/ruby-2.0.0-p247.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.

Warning! Requested ruby installation which requires another ruby available - installing one first.

Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.7/x86_64/ruby-2.0.0-p247.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.

Warning! Requested ruby installation which requires another ruby available - installing one first.

Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.7/x86_64/ruby-2.0.0-p247.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.

Warning! Requested ruby installation which requires another ruby available - installing one first.

Searching for binary rubies, this might take some time.
^C
To proceed rvm requires a ruby-1.9|ruby-2 compatible ruby is installed.
We attempted to install ruby automatically but it failed.
Please install it manually (or a compatible alternative) to proceed.


To proceed rvm requires a ruby-1.9|ruby-2 compatible ruby is installed.
We attempted to install ruby automatically but it failed.
Please install it manually (or a compatible alternative) to proceed.


To proceed rvm requires a ruby-1.9|ruby-2 compatible ruby is installed.
We attempted to install ruby automatically but it failed.
Please install it manually (or a compatible alternative) to proceed.


To proceed rvm requires a ruby-1.9|ruby-2 compatible ruby is installed.
We attempted to install ruby automatically but it failed.
Please install it manually (or a compatible alternative) to proceed.

当然，有一件红宝石礼物，否则我们不会走得那么远：

$ which ruby
/usr/bin/ruby
$ ruby -v
ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin11.0]

你知道可能是什么原因造成的吗，以及如何修复？

Answer 1

我最近在使用ruby-1.8.7的OSX10.8上遇到了类似的问题。升级rvm对我来说很有帮助。我已经做到了：

$ rvm get stable

然后：

$ rvm use system
$ rvm install 1.8.7-p374

Answer 2

试一试

$ rvm use system

告诉rvm使用预先安装的ruby。

然后

$ rvm install 1.9.3

此外，看看rvm安装脚本，它看起来只影响ruby1.9和ruby2.0。如果上述方法不起作用，请先尝试通过rvm安装ruby 1.8.7。