Ok, works now. I has to did a sad thing. For unknow reasons, this doesn't 
work at all :
> update-alternatives --install /usr/bin/ruby ruby /usr/bin/ruby1.8 1
> update-alternatives --remove ruby /usr/bin/ruby

So what I did is :
> rm /etc/alternatives/ruby
> ln -s /usr/bin/ruby1.8 /etc/alternatives/ruby

Now it works :-) Using gems with the appropriate Ruby version is better :-)

Thanks again

Le lundi 13 août 2012 11:56:04 UTC+2, Deimos Fr a écrit :
>
> I did as well. But I'm still blocked to the rubygem compilation :
>
> > update-alternatives --install /usr/bin/gem gem /usr/bin/gem1.8 1 
> > ruby setup.rb                                                    
> /usr/lib/ruby/1.9.1/rubygems.rb:206:in `try_activate': undefined method 
> `find_by_path' for Gem::Specification:Class (NoMethodError)
>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:59:in `rescue in 
> require'
>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:35:in `require'
>     from 
> /tmp/install_rubygems.wX4fqo5x78/rubygems-1.3.7/lib/rubygems/config_file.rb:50:in
>  
> `<class:ConfigFile>'
>     from 
> /tmp/install_rubygems.wX4fqo5x78/rubygems-1.3.7/lib/rubygems/config_file.rb:28:in
>  
> `<top (required)>'
>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
>     from 
> /tmp/install_rubygems.wX4fqo5x78/rubygems-1.3.7/lib/rubygems/gem_runner.rb:8:in
>  
> `<top (required)>'
>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
>     from setup.rb:25:in `<main>'
>
> And of course, I've installed all required packages.
>
> Le lundi 13 août 2012 11:44:05 UTC+2, Juan Sierra Pons a écrit :
>>
>> 2012/8/13 Deimos Fr <[email protected]>: 
>> > Hi, 
>> > 
>> > Thanks for the answer, but still searching as I've got this error now : 
>> > 
>> >> ruby setup.rb 
>> >> /usr/lib/ruby/1.9.1/rubygems.rb:206:in `try_activate': undefined 
>> method 
>> >> `find_by_path' for Gem::Specification:Class (NoMethodError) 
>> >>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:59:in `rescue 
>> in 
>> >> require' 
>> >>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:35:in 
>> `require' 
>> >>     from 
>> >> 
>> /tmp/install_rubygems.wX4fqo5x78/rubygems-1.3.7/lib/rubygems/config_file.rb:50:in
>>  
>>
>> >> `<class:ConfigFile>' 
>> >>     from 
>> >> 
>> /tmp/install_rubygems.wX4fqo5x78/rubygems-1.3.7/lib/rubygems/config_file.rb:28:in
>>  
>>
>> >> `<top (required)>' 
>> >>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in 
>> `require' 
>> >>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in 
>> `require' 
>> >>     from 
>> >> 
>> /tmp/install_rubygems.wX4fqo5x78/rubygems-1.3.7/lib/rubygems/gem_runner.rb:8:in
>>  
>>
>> >> `<top (required)>' 
>> >>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in 
>> `require' 
>> >>     from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in 
>> `require' 
>> >>     from setup.rb:25:in `<main>' 
>> > 
>> > 
>> > 
>> > Le mercredi 8 août 2012 18:53:30 UTC+2, Juan Sierra Pons a écrit : 
>> >> 
>> >> Hi 
>> >> 
>> >> Yesterday I had the same problem. I solved it using this link: 
>> >> 
>> >> 
>> >> 
>> http://docs.puppetlabs.com/dashboard/manual/1.2/bootstrapping.html#installing-dependencies
>>  
>> >> 
>> >> Install the RubyGems package system with the script provided. 
>> >> 
>> >> Hope it helps. 
>> >> 
>> >> Best regards 
>> >> 
>> >> On Aug 8, 2012 5:59 PM, "Deimos Fr" <[email protected]> wrote: 
>> >>> 
>> >>> Hi, 
>> >>> 
>> >>> I've got an issue on installing Puppet Dashboard on Debian wheezy. 
>> When I 
>> >>> launch the db:migrate, I've got an error : 
>> >>>> 
>> >>>> > rake RAILS_ENV=production db:migrate --trace 
>> >>>> NOTE: Gem.source_index is deprecated, use Specification. It will be 
>> >>>> removed on or after 2011-11-01. 
>> >>>> Gem.source_index called from 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/railties/lib/rails/gem_dependency.rb:21.
>>  
>>
>> >>>> NOTE: Gem::SourceIndex#initialize is deprecated with no replacement. 
>> It 
>> >>>> will be removed on or after 2011-11-01. 
>> >>>> Gem::SourceIndex#initialize called from 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/railties/lib/rails/vendor_gem_source_index.rb:100.
>>  
>>
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> 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 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/source_index.rb:91. 
>> >>>> rake aborted! 
>> >>>> cannot load such file -- ftools 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/activesupport/lib/active_support/dependencies.rb:182:in
>>  
>>
>> >>>> `block in require' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/activesupport/lib/active_support/dependencies.rb:547:in
>>  
>>
>> >>>> `new_constants_in' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/activesupport/lib/active_support/dependencies.rb:182:in
>>  
>>
>> >>>> `require' 
>> >>>> /usr/share/puppet-dashboard/lib/tasks/plugins.rake:2:in `<top 
>> >>>> (required)>' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/activesupport/lib/active_support/dependencies.rb:171:in
>>  
>>
>> >>>> `load' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/activesupport/lib/active_support/dependencies.rb:171:in
>>  
>>
>> >>>> `block in load_with_new_constant_marking' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/activesupport/lib/active_support/dependencies.rb:547:in
>>  
>>
>> >>>> `new_constants_in' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/activesupport/lib/active_support/dependencies.rb:171:in
>>  
>>
>> >>>> `load_with_new_constant_marking' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/railties/lib/tasks/rails.rb:14:in 
>> >>>> `block in <top (required)>' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/railties/lib/tasks/rails.rb:14:in 
>> >>>> `each' 
>> >>>> 
>> >>>> 
>> /usr/share/puppet-dashboard/vendor/rails/railties/lib/tasks/rails.rb:14:in 
>> >>>> `<top (required)>' 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
>> >>>> /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
>> >>>> /usr/share/puppet-dashboard/Rakefile:11:in `<top (required)>' 
>> >>>> /usr/lib/ruby/vendor_ruby/rake/rake_module.rb:25:in `load' 
>> >>>> /usr/lib/ruby/vendor_ruby/rake/rake_module.rb:25:in `load_rakefile' 
>> >>>> /usr/lib/ruby/vendor_ruby/rake/application.rb:501:in 
>> `raw_load_rakefile' 
>> >>>> /usr/lib/ruby/vendor_ruby/rake/application.rb:82:in `block in 
>> >>>> load_rakefile' 
>> >>>> /usr/lib/ruby/vendor_ruby/rake/application.rb:133:in 
>> >>>> `standard_exception_handling' 
>> >>>> /usr/lib/ruby/vendor_ruby/rake/application.rb:81:in `load_rakefile' 
>> >>>> /usr/lib/ruby/vendor_ruby/rake/application.rb:65:in `block in run' 
>> >>>> /usr/lib/ruby/vendor_ruby/rake/application.rb:133:in 
>> >>>> `standard_exception_handling' 
>> >>>> /usr/lib/ruby/vendor_ruby/rake/application.rb:63:in `run' 
>> >>>> /usr/bin/rake:27:in `<main>' 
>> >>> 
>> >>> 
>> >>> It looks like a ruby version problem. On version 1.8 ftools exists, 
>> but 
>> >>> not on 1.9.1 (the standard on Debian wheezy). Does someone has an 
>> idea ? 
>> >>> I've searched on the web, but didn't find something relevant. 
>> >>> 
>> >>> Thanks in advance 
>> >>> 
>> >>> -- 
>> >>> You received this message because you are subscribed to the Google 
>> Groups 
>> >>> "Puppet Users" group. 
>> >>> To view this discussion on the web visit 
>> >>> https://groups.google.com/d/msg/puppet-users/-/UjclRqRVMCcJ. 
>> >>> To post to this group, send email to [email protected]. 
>> >>> To unsubscribe from this group, send email to 
>> >>> [email protected]. 
>> >>> 
>> >>> For more options, visit this group at 
>> >>> http://groups.google.com/group/puppet-users?hl=en. 
>> > 
>> > -- 
>> > You received this message because you are subscribed to the Google 
>> Groups 
>> > "Puppet Users" group. 
>> > To view this discussion on the web visit 
>> > https://groups.google.com/d/msg/puppet-users/-/S0dIFMCurekJ. 
>> > 
>> > To post to this group, send email to [email protected]. 
>> > To unsubscribe from this group, send email to 
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>>
>> Hi 
>>
>> Did you update the alternatives? as stated in point number 3 [1] 
>>
>>  update-alternatives --install /usr/bin/gem gem /usr/bin/gem1.8 1 
>>
>> It seems you are still using the 1.9.1 ruby version instead of the 
>> 1.8.1 recently installed 
>>
>> [1] 
>> http://docs.puppetlabs.com/dashboard/manual/1.2/bootstrapping.html#installing-dependencies
>>  
>>
>> Best regards 
>>
>> --------------------------------------------------------------------------------------
>>  
>>
>> Juan Sierra Pons                                 [email protected] 
>> Linux User Registered: #257202       http://www.elsotanillo.net 
>> GPG key = 0xA110F4FE 
>> Key Fingerprint = DF53 7415 0936 244E 9B00  6E66 E934 3406 A110 F4FE 
>> --------------------------------------------------------------------------------------
>>  
>>
>>
>

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