方法一:
C:\Users\len>gem install sass
ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError)
Errno::ETIMEDOUT: A connection attempt failed because the connected party di
d not properly respond after a period of time, or established connection failed
because connected host has failed to respond. - connect(2) for "rubygems.global.
ssl.fastly.net" port 443 (https://api.rubygems.org/quick/Marshal.4.8/sass-3.4.13
.gemspec.rz)

原因是ruby 的gem被和谐了,现在淘宝的ruby工程师架设了rubygems的国内镜像。使用方法如下:

$ gem sources --remove https://rubygems.org/
$ gem sources -a https://ruby.taobao.org/
$ gem sources -l
*** CURRENT SOURCES ***

https://ruby.taobao.org

然后在运行gem命令就可以了!

C:\Users\len>gem install sass
Fetching: sass-3.4.13.gem (100%)
Successfully installed sass-3.4.13
Parsing documentation for sass-3.4.13
Installing ri documentation for sass-3.4.13
Done installing documentation for sass after 5 seconds
1 gem installed

文章内容来自:http://www.haorooms.com/post/gem_not_use


方法二:
http://blog.csdn.net/shakdy/article/details/53139701

其实不要替换淘宝镜像源进行安装,查看是否存在镜像地址

C:\Users\xxxx>gem sources -l 
* CURRENT SOURCES *

http://rubygems.org

如果不存在上面这个镜像地址,输入命令

C:\Users\xxxx>gem sources –add http://rubygems.org

注意http://rubygems.org/地址正确拼写,http没有s

然后输入安装Compass命令

C:\Users\xxxx>gem install compass

C:\Users\xxxx>Compass -v 
Compass 1.0.3 (Polaris) 
Copyright (c) 2008-2016 Chris Eppstein 
Released under the MIT License. 
Compass is charityware. 
Please make a tax deductable donation for a worthy cause: http://umdf.org/compass

C:\Users\xxxx>Sass -v 
Sass 3.4.22 (Selective Steve)

安装完成,偶也

最后由 Leo 编辑于2018年01月13日 22:46