How to install Jekyll on Mac 10.11.6

Question

Hello and thanks for your help in advance. I'm having trouble installing Jekyll because I receive the following error:

ERROR:  While executing gem ... (Errno::EINVAL)
Invalid argument

This is slightly different than the question already posted, here I've also followed all of those recommendations but nothing is working.

• Current xCode version: 8
• Current Ruby version: ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-darwin15]

Here is the backtrace of the install:

Lisas-MBP:gems LMS$ gem install jekyll --backtrace
ERROR:  While executing gem ... (Errno::EINVAL)
Invalid argument
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:672:in     `clock_gettime'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:672:in `request'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:531:in `block in   fetch_resource'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:1103:in `block (3   levels) in resolv'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:1101:in `each'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:1101:in `block (2   levels) in resolv'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:1100:in `each'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:1100:in `block in   resolv'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:1098:in `each'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:1098:in `resolv'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:522:in `fetch_resource'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:512:in `each_resource'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/resolv.rb:493:in `getresource'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/remote_fetcher.rb:99:in `api_endpoint'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/source.rb:47:in `api_uri'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/source.rb:86:in `dependency_resolver_set'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/resolver/best_set.rb:24:in `block in pick_sets'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/source_list.rb:98:in `each'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/source_list.rb:98:in `each_source'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/resolver/best_set.rb:23:in `pick_sets'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/resolver/best_set.rb:29:in `find_all'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/resolver/installer_set.rb:152:in `find_all'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/resolver/installer_set.rb:55:in `add_always_install'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/dependency_installer.rb:474:in `resolve_dependencies'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/commands/install_command.rb:239:in `install_gem'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/commands/install_command.rb:300:in `block in install_gems'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/commands/install_command.rb:296:in `each'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/commands/install_command.rb:296:in `install_gems'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/commands/install_command.rb:203:in `execute'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/command.rb:308:in `invoke_with_build_args'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/command_manager.rb:169:in `process_args'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/command_manager.rb:139:in `run'
/usr/local/Cellar/ruby/2.3.1_1/lib/ruby/2.3.0/rubygems/gem_runner.rb:55:in `run'
/usr/local/bin/gem:21:in `<main>'

Here is my gem env

Lisas-MBP:Code LMS$ gem env
RubyGems Environment:
- RUBYGEMS VERSION: 2.5.1
- RUBY VERSION: 2.3.1 (2016-04-26 patchlevel 112) [x86_64-darwin15]
- INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/2.3.0
- USER INSTALLATION DIRECTORY: /Users/LMS/.gem/ruby/2.3.0
- RUBY EXECUTABLE: /usr/local/opt/ruby/bin/ruby
- EXECUTABLE DIRECTORY: /usr/local/bin
- SPEC CACHE DIRECTORY: /Users/LMS/.gem/specs
- SYSTEM CONFIGURATION DIRECTORY: /usr/local/Cellar/ruby/2.3.1_1/etc
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-15
- GEM PATHS:
 - /usr/local/lib/ruby/gems/2.3.0
 - /Users/LMS/.gem/ruby/2.3.0
 - /usr/local/Cellar/ruby/2.3.1_1/lib/ruby/gems/2.3.0
- GEM CONFIGURATION:
 - :update_sources => true
 - :verbose => true
 - :backtrace => false
 - :bulk_threshold => 1000
- REMOTE SOURCES:
 - https://rubygems.org/
- SHELL PATH:
 - /Library/Frameworks/Python.framework/Versions/3.4/bin
 - /Library/Frameworks/Python.framework/Versions/3.4/bin
 - /Library/Frameworks/Python.framework/Versions/3.5/bin
 - /Library/Frameworks/Python.framework/Versions/3.5/bin
 - /opt/local/bin
 - /opt/local/sbin
 - /usr/local/bin
 - /usr/local/bin
 - /usr/bin
 - /bin
 - /usr/sbin
 - /sbin
 - /user/local/bin
 - /Users/LMS/.rvm/bin
 - /Applications/Postgres.app/Contents/Versions/9.4/bin

Answer 1

Thanks for all the responses. I ended up uninstalling ruby and re-installing it. Then I started getting other issues, but new issues are good! And this finally fixed it.

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

Now I'm running ruby 2.0. Hope this helps, let me know if anyone has any questions!

Answer 2

I'm able to successfully install jekyll on my Mac but I'm not using system Ruby. I'd highly recommend using RBEnv to manage your Ruby installation on OSX. You'll find it much easier to work with than trying to deal with the system version or the Brew version. With it you can swap out Ruby versions easily and gem management is simpler.