Bugs item #29067, was opened at 2011-03-07 08:04
You can respond by visiting:
http://rubyforge.org/tracker/?func=detail&atid=575&aid=29067&group_id=126
Category: `gem install` command
Group: v1.6.x
Status: Open
Resolution: Rejected
Priority: 3
Submitted By: Elias Baixas (eliasbaixas)
Assigned to: Ryan Davis (zenspider)
Summary: calling .dup on nil while installing a gem
Initial Comment:
sudo gem env:
RubyGems Environment:
- RUBYGEMS VERSION: 1.6.1
- RUBY VERSION: 1.8.7 (2010-12-23 patchlevel 330) [i686-darwin9]
- INSTALLATION DIRECTORY: /opt/local/lib/ruby/gems/1.8
- RUBY EXECUTABLE: /opt/local/bin/ruby
- EXECUTABLE DIRECTORY: /opt/local/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86-darwin-9
- GEM PATHS:
- /opt/local/lib/ruby/gems/1.8
- /Users/elias/.gem/ruby/1.8
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- :sources => ["http://gems.rubyforge.org";, "http://gems.github.com";,
"http://gemcutter.org/";]
- REMOTE SOURCES:
- http://gems.rubyforge.org
- http://gems.github.com
- http://gemcutter.org/
sudo gem install --debug yfactorial-utility_scopes
ERROR: While executing gem ... (TypeError)
can't dup NilClass
/opt/local/lib/ruby/site_ruby/1.8/rubygems/specification.rb:442:in `dup'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/specification.rb:442:in
`initialize_copy'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/specification.rb:439:in
`each'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/specification.rb:439:in
`initialize_copy'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/specification.rb:832:in `dup'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/specification.rb:832:in
`to_ruby_for_cache'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/installer.rb:234:in
`write_spec'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/installer.rb:175:in `install'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:299:in
`install'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `each'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in
`install'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:120:in
`execute'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in
`each'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in
`execute'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:133:in
`process_args'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:103:in
`run'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:63:in `run'
/opt/local/bin/gem:21
----
from the sources
(/opt/local/lib/ruby/site_ruby/1.8/rubygems/specification.rb:442) I can see
this:
440: self.class.array_attributes.each do |name|
441: name = :"@#{name}"
442: next unless other_ivars.include? name
442: instance_variable_set name, other_spec.instance_variable_get(name).dup
443: end
so the trick would be to add an "if other_spec.instance_variable_get(name)" at
line 442 (but then the 'name' variable would be unset, instad of nil, well, I'm
not sure :P )
Elias
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Comment By: Aníbal Rojas (anibalrojas)
Date: 2011-03-10 17:28
Message:
I had the same issue running Ruby Gems 1.6.1 (under RVM). Downgrading to 1.5.2
fixed it. Here are the details of the exception:
$ gem install rubyist-aasm -v2.1.1 --no-rdoc --no-ri --backtrace
ERROR: While executing gem ... (TypeError)
can't dup NilClass
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/specification.rb:442:in
`dup'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/specification.rb:442:in
`initialize_copy'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/specification.rb:439:in
`each'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/specification.rb:439:in
`initialize_copy'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/specification.rb:832:in
`dup'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/specification.rb:832:in
`to_ruby_for_cache'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/installer.rb:234:in
`write_spec'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/installer.rb:175:in
`install'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:299:in
`install'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in
`each'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in
`install'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:120:in
`execute'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in
`each'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in
`execute'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in
`invoke'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:133:in
`process_args'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:103:in
`run'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:63:in
`run'
/home/anibal/.rvm/rubies/ruby-1.8.7-p334/bin/gem:25
----------------------------------------------------------------------
Comment By: Elias Baixas (eliasbaixas)
Date: 2011-03-07 18:47
Message:
it should be on http://gems.github.com
----------------------------------------------------------------------
Comment By: Ryan Davis (zenspider)
Date: 2011-03-07 18:43
Message:
I can't reproduce this:
gem install -i xxx --backtrace yfactorial-utility_scopes
ERROR: Could not find a valid gem 'yfactorial-utility_scopes' (>= 0) in any
repository
ERROR: Possible alternatives: utility_scopes
----------------------------------------------------------------------
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