Question

I have MacPorts installed Ruby on Rails which I am have been updating and reworking since yesterday as I want to get back into studying this language.

Specs

ruby -v
ruby 1.8.7 (2012-02-08 patchlevel 358) [i686-darwin10]
rails -v
Rails 3.0.3
gem -v
1.8.5

The Journey

So far it has been quite the journey to get Ruby, Rails and Gems to work on my Mac. On following a tutorial I decided to install/ update Rails API docs and I ran into these errors:

Password:
NOTE: Gem::SourceIndex.from_installed_gems is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::SourceIndex.from_installed_gems called from /opt/local/lib/ruby/site_ruby/1.8/rubygems/commands/rdoc_command.rb:58.
NOTE: Gem::SourceIndex.installed_spec_directories is deprecated, use Specification.dirs. It will be removed on or after 2011-11-01.
Gem::SourceIndex.installed_spec_directories called from /opt/local/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:47.
NOTE: Gem::SourceIndex.from_gems_in is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::SourceIndex.from_gems_in called from /opt/local/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:47.
NOTE: Gem::SourceIndex#initialize is deprecated with no replacement. It will be removed on or after 2011-11-01.
Gem::SourceIndex#initialize called from /opt/local/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:67.
NOTE: Gem::SourceIndex#spec_dirs= is deprecated, use Specification.dirs=. It will be removed on or after 2011-11-01.
Gem::SourceIndex#spec_dirs= called from /opt/local/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:94.
NOTE: Gem::SourceIndex#refresh! is deprecated with no replacement. It will be removed on or after 2011-11-01.
Gem::SourceIndex#refresh! called from /opt/local/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:95.
NOTE: Gem::SourceIndex#load_gems_in is deprecated with no replacement. It will be removed on or after 2011-11-01.
Gem::SourceIndex#load_gems_in called from /opt/local/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:320.
NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
Gem::SourceIndex#add_spec called from /opt/local/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
Gem::SourceIndex#each called from /opt/local/lib/ruby/site_ruby/1.8/rubygems/commands/rdoc_command.rb:58.
Installing ri documentation for activesupport-3.2.3...

unrecognized option `--encoding'

For help on options, try 'rdoc --help'

ERROR:  While generating documentation for activesupport-3.2.3
... MESSAGE:   exit
... RDOC args: --ri --op /opt/local/lib/ruby/gems/1.8/doc/activesupport-3.2.3/ri --encoding UTF-8 lib --title activesupport-3.2.3 Documentation --quiet

when I did gem server the server was started up. So I probably installed docs a year ago and totally forgot about it.

What can I do to get rid of all these errors? Or can I safely ignore them and keep on going?

Answer 1

You can safely ignore those errors.

For now you can install gems by specifying gem install rails --no-ri --no-rdoc to install Rails without those errors.

And in the future, you could add:

gem: --no-ri --no-rdoc

to your ~/.gemrc file, to globally ignore documentation for future gem installs.

Also, if you’re just getting started I would recommend using a ruby version manager such as rvm or rbenv. It makes life so much easier when managing different ruby versions and gemsets.