CocoaPods升级1.1.1报错

ERROR:  While executing gem ... (Gem::DependencyError)

    Unable to resolve dependencies: cocoapods requires cocoapods-core (= 1.1.1), cocoapods-downloader (< 2.0, >= 1.1.2), cocoapods-trunk (< 2.0, >= 1.1.1), xcodeproj (< 2.0, >= 1.3.3)

 

解决方法：sudo gem update --system

 

ERROR:  While executing gem ... (Errno::EPERM)

   Operation not permitted - /usr/bin/xcodeproj

 

解决方法：sudo nvram boot-args="rootless=0"; sudo reboot

 

重启后再执行安装即可。

 

sudo gem install -n /usr/local/bin cocoapods