Datamapper and Ruby On Rails

Aaaaaargh. Some time ago I wrote about problems with merb. That was obvious that if  not merb than it would be ROR. I installed new merb, some more things, run script/server… great, everything was OK.

I changed a little the application for using datamapper. Great… run the script and ooops now:

$ script/server
=> Booting Mongrel (use 'script/server webrick' to force WEBrick)
=> Rails 2.1.1 application starting on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
** Starting Mongrel listening at 0.0.0.0:3000
** Starting Rails with development environment...
Exiting
/usr/local/lib/site_ruby/1.8/rubygems.rb:578:in `report_activate_error':
        RubyGem version error: dm-core(0.9.5 not = 0.9.4) (Gem::LoadError)
    from /usr/local/lib/site_ruby/1.8/rubygems.rb:134:in `activate'
    from /usr/local/lib/site_ruby/1.8/rubygems.rb:49:in `gem'
    from /usr/lib/ruby/gems/1.8/gems/datamapper-0.9.5/lib/data_mapper.rb:6
    from /usr/lib/ruby/gems/1.8/gems/datamapper-0.9.5/lib/data_mapper.rb:5:in `each'
    from /usr/lib/ruby/gems/1.8/gems/datamapper-0.9.5/lib/data_mapper.rb:5
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:32:in
        `gem_original_require'
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:32:in `require'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/
        dependencies.rb:510:in `require'
     ... 29 levels...
    from /usr/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/commands/server.rb:39
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in
        `gem_original_require'
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
    from script/server:3

What now?

Well… I think that I’ll get back to Django although I don’t like Python.

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