Macos – You don’t have write permissions for the /Library/Ruby/Gems/2.3.0 directory

bundlemacosrubygems

When I use command gem install bundler in MacOS 10.13.x, the error is:

You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.

$ gem install bundler
Fetching: bundler-1.16.2.gem (100%)
ERROR:  While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.

Best Answer

This is basically a duplicate of this question, where I already posted a detailed answer that solves the problem. Instead of maintaining two separate answers, I thought it would be better to just link to my answer here since the same solution applies: https://stackoverflow.com/a/54873916/928191

Related Solutions

Ruby-on-rails – bundle install fails with SSL certificate verification error

Update

Now that I've karma wh..err mined enough from this answer everyone should know that this should have been fixed.

re: via Ownatik again bundle install fails with SSL certificate verification error

gem update --system

My answer is still correct and left below for reference if that ends up not working for you.

Honestly the best temporary solution is to

[...] use the non-ssl version of rubygems in your gemfile as a temporary workaround.

via user Ownatik

what they mean is at the top of the Gemfile in your rails application directory change

source 'https://rubygems.org'

source 'http://rubygems.org'

note that the second version is http instead of https

Ruby-on-rails – You don’t have write permissions into the /var/lib/gems/1.9.1 directory

According the question I see a few steps in order to allow writing to /var/lib/gems:

Create gems (if not any) group, and add yourself to the group:
```
$ groupadd -f gems
$ usermod -aG gems $(whoami)
```
When reenter to the session:
```
$ sudo -u $(whoami) bash
```
Allow write for a gems group to /var/lib/gems/, and set the setgid bits:
```
$ chown :gems /var/lib/gems/
$ chmod g+sw /var/lib/gems/
```
Try installing gems into /var/lib/gems/.

NOTE: I strongly advice you to control rubies and gems via rbenv/rvm keeping them in a local home folder. Please refer to the answer to know how to properly setup your project.

Best Answer

Related Solutions

Ruby-on-rails – bundle install fails with SSL certificate verification error

Ruby-on-rails – You don’t have write permissions into the /var/lib/gems/1.9.1 directory

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