Can t install gems on OS X El Capitan

Question

I am not able to install and run fakes3 gem on El Capitan Beta 5   I tried   sudo gem install fakes3 ERROR   While executing gem      Errno  EPERM      Operation not permitted -  usr bin fakes3   Then I tried doing it the cocoapods way  It worked for cocoapods but not for fakes3   mkdir -p  HOME Software ruby export GEM HOME  HOME Software ruby gem install cocoapods       1 gem installed gem install fakes3 ERROR   While executing gem      Gem  FilePermissionError      You don t have write permissions for the  Library Ruby Gems 2 0 0 directory

User · Accepted Answer

Disclaimer   theTinMan and other Ruby developers often point out not to use sudo when installing gems and point to things like RVM  That s absolutely true when doing Ruby development  Go ahead and use that   However  many of us just want some binary that happens to be distributed as a gem  e g  fakes3  cocoapods  xcpretty       I definitely don t want to bother with managing a separate ruby  Here are your quicker options   Option 1  Keep using sudo  Using sudo is probably fine if you want these tools to be installed globally    The problem is that these binaries are installed into  usr bin  which is off-limits since El Capitan  However  you can install them into  usr local bin instead  That s where Homebrew install its stuff  so it probably exists already   sudo gem install fakes3 -n usr local bin   Gems will be installed into  usr local bin and every user on your system can use them if it s in their PATH   Option 2  Install in your home directory  without sudo   The following will install gems in    gem and put binaries in   bin  which you should then add to your PATH    gem install fakes3 --user-install -n  bin   Make it the default  Either way  you can add these parameters to your    gemrc so you don t have to remember them   gem  -n usr local bin   i e  echo  gem  -n usr local bin   gt  gt     gemrc  or  gem  --user-install -n  bin   i e  echo  gem  --user-install -n  bin   gt  gt     gemrc   Tip  You can also throw in --no-document to skip generating Ruby developer documentation

User · Answer

sudo chown -R   whoami  admin  usr local   That will give permissions back  Homebrew installs ruby there

User · Answer

I ran across the same issue after installing El Capitan  I tried to install sass and compass into a symfony project  the following command returned the following error     sudo gem install compass  ERROR   Error installing compass      ERROR  Failed to build gem native extension    System Library Frameworks Ruby framework Versions 2 0 usr bin ruby extconf rb    checking for ffi h     System Library Frameworks Ruby framework Versions 2 0 usr lib ruby 2 0 0 mkmf rb 434 in  try do   The compiler failed to generate an executable file   RuntimeError   So I then tried to install sass with    sudo gem install sass  Got the same error message  after some googling I managed to install sass using the following command     sudo gem install -n  usr local bin sass  The above worked for me with installing sass but did not work for installing compass  I read that someone somewhere had opened an instance of xcode then closed it again  then successfully ran the same command after which worked for them  I attempted to open xcode but was prompted with a message saying that the version of xcode installed was not compatible with El Capitan  So I then updated xcode from the app store  re-ran the following command which this time ran successfully     sudo gem install -n  usr local bin compass  I was then able to run   compass init  I now have all my gems working and can proceed to build some lovely sass stuff

User · Answer

This is the solution that I have used   Note  this fix is for compass as I wrote it on another SO question  but I have used the same process to restore functionality to all terminal processes  obviously the gems you are installing are different  but the process is the same   I had the same issue  It is due to Apple implementing System Integrity Protection  SIP   You have to first disable that     Reboot in recovery mode   Reboot and hold Command   R until you see the apple logo   Once booted select Utilities   Terminal from top bar   type  csrutil disable  then type  reboot  Once rebooted  Open terminal back up and enter the commands   sudo gem uninstall bundler  sudo gem install bundler  sudo gem install compass  sudo gem install sass  sudo gem update --system  The the individual gems that failed need to be fixed  so for each do the following   On my machine this was the first dependency not working so I listed it   sudo gem pristine ffi --version 1 9 3  Proceed through the list of gems that need to be repaired  In all you are looking at about 10 minutes to fix it  but you will have terminal commands for compass working   Screenshot

User · Answer

sudo gem install -n  usr local bin cocoapods   Try this  It will definately work

User · Answer

You might have two options   If you ve installed ruby and rails  you can first try running the command  rvm fix-permissions    You can uninstall ruby completely  and reinstall in your   directory aka your home directory   If you re using homebrew the command is  brew uninstall ruby  For rails uninstall without homebrew the command is  rvm remove  This should reinstall the latest ruby by running command  curl -L https   get rvm io   bash -s stable --rails lt br gt   Mac has 2 6 3 factory installed  and it s required    if not run this command  rvm install  quot ruby-2 6 3 quot   and then  gem install rails  You ll get a few error messages at the end saying you have to add some other bundles    Just make sure you re in the home   directory when you re installing so the permissions won t be an issue  but just in case    I again ran  rvm fix-permissions  and  rvm debug  which told me I had to download yarn  I didn t save the output for it   Basically I did whatever the prompt told me to do if it had to do with my OS  -D

User · Answer

As it have been said  the issue comes from a security function of Mac OSX since  El Capitan    Using the default system Ruby  the install process happens in the  Library Ruby Gems 2 0 0 directory which is not available to the user and gives the error   You can have a look to your Ruby environments parameters with the command    gem env   There is an INSTALLATION DIRECTORY and a USER INSTALLATION DIRECTORY  To use the user installation directory instead of the default installation directory  you can use --user-install parameter instead as using sudo which is never a recommanded way of doing     gem install myGemName --user-install   There should not be any rights issue anymore in the process  The gems are then installed in the user directory       gem Ruby 2 0 0 bin  But to make the installed gems available  this directory should be available in your path  According to the Ruby   s faq  you can add the following line to your    bash profile or    bashrc  if which ruby  gt  dev null  amp  amp  which gem  gt  dev null  then     PATH    ruby -rubygems -e  puts Gem user dir   bin  PATH  fi   Then close and reload your terminal or reload your  bash profile or  bashrc       bash profile

User · Answer

I don t like to install stuff with sudo  once you start with sudo you can t stop    try giving permissions to the Gems directory   sudo chown -R   whoami   Library Ruby Gems 2 0 0

User · Answer

In my case  I had to re-install Ruby using Brew  That seems to have solved the problem as I can install gems again   brew install ruby   After this  you need to log out and log back in  either graphically or just restarting your terminal

User · Answer

That is because of the new security function of OS X  El Capitan   Try adding --user-install instead of using sudo     gem install     --user-install   For example  if you want to install fake3 just use     gem install fake3 --user-install

User · Answer

If the gem you are trying to install requires xml libraries  then try this   sudo gem install -n  usr local bin   lt gem name gt  -- --use-system-libraries --with-xml2-include  usr include libxml2 --with-xml2-lib  usr lib    Specifically  I ran into a problem while installing the nokogiri gem v 1 6 8 on OS X El Capitan  and this finally worked for me   sudo gem install -n  usr local bin  nokogiri -- --use-system-libraries --with-xml2-include  usr include libxml2 --with-xml2-lib  usr lib    To make sure you have libxml2 and libxslt installed  you can do   brew install libxml2 libxslt brew install libiconv   and then check to make sure you have xcode command line tools installed   xcode-select --install    should return this error   xcode-select  error  command line tools are already installed  use  Software Update  to install updates

User · Answer

Looks like when upgrading to OS X El Capitain  the  usr local directory is modified in multiple ways      user permissions are reset  this is also a problem for people using Homebrew  binaries and symlinks might have been deleted or altered    Edit  There s also a preliminary thing to do   upgrade Xcode     Solution for  1      sudo chown -R   whoami  admin  usr local   This will fix permissions on the  usr local directory which will then help both gem install and brew install link     commands working properly   Solution to  2    Ruby based issues  Make sure you have fixed the permissions of the  usr local directory  see  1 above   First try to reinstall your gem using    sudo gem install  lt gemname gt    Note that it will install the latest version of the specified gem   If you don t want to face backward-compatibility issues  I suggest that you first determine which version of which gem you want to get and then reinstall it with the -v version  See an exemple below to make sure that the system won t get a new version of capistrano     gem list   grep capistrano capistrano  3 4 0  3 2 1  2 14 2    sudo gem install capistrano -v 3 4 0   Brew based issues  Update brew and upgrade your formulas    brew update   brew upgrade   You might also need to re-link some of them manually    brew link  lt formula gt

User · Answer

I had to rm -rf   vendor then run bundle install again

User · Answer

You have to update Xcode to the newest one  v7 0 1  and everything will work as normal    If after you install the newest Xcode and still doesn t work try to install gem in this way    sudo gem install -n  usr local bin GEM NAME HERE   For example    sudo gem install -n  usr local bin fakes3 sudo gem install -n  usr local bin compass sudo gem install -n  usr local bin susy

User · Answer

Reinstalling RVM worked for me  but I had to reinstall all of my gems afterward   rvm implode  curl -sSL https   get rvm io   bash -s stable --ruby rvm reload

[ruby] Can't install gems on OS X "El Capitan"

Option 1: Keep using sudo

Option 2: Install in your home directory (without sudo)

Make it the default

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