[Solved] Ruby: undefined method `path' for Gem:Module (NoMethodError)

hughitt1 · 2011-02-15 20:45:21

Hi all,

I've been having trouble getting using the gem tool included with the version of ruby from the extra repository. Whenever I try to run gem I run into an error:

$ gem
/usr/lib/ruby/site_ruby/1.9.1/rubygems/source_index.rb:62:in `installed_spec_directories': undefined method `path' for Gem:Module (NoMethodError)
    from /usr/lib/ruby/site_ruby/1.9.1/rubygems/source_index.rb:52:in `from_installed_gems'
    from /usr/lib/ruby/site_ruby/1.9.1/rubygems.rb:914:in `source_index'
    from /usr/lib/ruby/site_ruby/1.9.1/rubygems/gem_path_searcher.rb:83:in `init_gemspecs'
    from /usr/lib/ruby/site_ruby/1.9.1/rubygems/gem_path_searcher.rb:13:in `initialize'
    from /usr/lib/ruby/site_ruby/1.9.1/rubygems.rb:873:in `new'
    from /usr/lib/ruby/site_ruby/1.9.1/rubygems.rb:873:in `searcher'
    from /usr/lib/ruby/site_ruby/1.9.1/rubygems.rb:495:in `find_files'
    from /usr/lib/ruby/site_ruby/1.9.1/rubygems.rb:1034:in `load_plugins'
    from /usr/lib/ruby/site_ruby/1.9.1/rubygems/gem_runner.rb:84:in `<top (required)>'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from /usr/bin/gem:9:in `<main>'

A similar issue was reported in an earlier thread (https://bbs.archlinux.org/viewtopic.php?id=104198), but the solutions suggested there have not been able to help me.

Any ideas?

Thanks,
Keith

Last edited by hughitt1 (2011-02-17 15:50:24)

hughitt1 · 2011-02-17 14:43:53

Still no luck. I noticed that even though ruby 1.9.2 is installed (ruby 1.9.2p136 (2010-12-25 revision 30365)), it seems like all of the files and directories are stored as "1.9.1", e.g.:

pacman -Ql ruby

ruby /usr/
ruby /usr/bin/
ruby /usr/bin/erb
ruby /usr/bin/gem
ruby /usr/bin/irb
ruby /usr/bin/rake
ruby /usr/bin/rdoc
ruby /usr/bin/ri
ruby /usr/bin/ruby
ruby /usr/bin/testrb
ruby /usr/include/
ruby /usr/include/ruby-1.9.1/
ruby /usr/include/ruby-1.9.1/i686-linux/
ruby /usr/include/ruby-1.9.1/i686-linux/ruby/
ruby /usr/include/ruby-1.9.1/i686-linux/ruby/config.h
ruby /usr/include/ruby-1.9.1/ruby.h
ruby /usr/include/ruby-1.9.1/ruby/
...

Next thing to try may be to manually install gem.

awkwood · 2011-02-17 15:24:28

The library paths will remain as 1.9.1 as it indicates the compatibility level (see the 1.9.2 Release Notes).

Please try the following:

Rename /usr/lib/ruby/site_ruby/ to site_ruby.bak/
Run the following commands:

    gem install rubygems-update
    update_rubygems

You should be upgraded to Rubygems 1.5.2 which doesn't have these issues.
If you get an error during the update please try the following instead:

    ruby --disable-gems -S update_rubygems

hughitt1 · 2011-02-17 15:49:30

Hi Awkwood,

That did the trick. Thanks! I actually ended up uninstalling ruby completely (including manually removing /usr/lib/ruby), and afterwards I had a working but outdated version of Rubygems. I then ran "gem update --system" and got:

Updating RubyGems
Updating rubygems-update
Successfully installed rubygems-update-1.5.2
Updating RubyGems to 1.5.2
Installing RubyGems 1.5.2
RubyGems 1.5.2 installed

=== 1.5.2 / 2011-02-10

NOTE:  RubyGems 1.5.0 and 1.5.1 have a broken <tt>gem update --system</tt>.

To upgrade you'll need to use the manual upgrade recipe.  Using sudo/su as
appropriate:

  $ gem install rubygems-update
  $ update_rubygems

Bug Fixes:

* Fixed <tt>gem update --system</tt>.  RubyGems can now update itself again.

Which is exactly as you suggested. I think what must have happened before is that I ran gem update but then completely missed this part.

Thanks for your help!

Best,
Keith

Arch Linux

#1 2011-02-15 20:45:21

[Solved] Ruby: undefined method `path' for Gem:Module (NoMethodError)

#2 2011-02-17 14:43:53

Re: [Solved] Ruby: undefined method `path' for Gem:Module (NoMethodError)

#3 2011-02-17 15:24:28

Re: [Solved] Ruby: undefined method `path' for Gem:Module (NoMethodError)

#4 2011-02-17 15:49:30

Re: [Solved] Ruby: undefined method `path' for Gem:Module (NoMethodError)

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