Ruby Forum Rails-ES > problema instalacion debian

saludos

estoy tratando de instalar ruby on rails en el debian 4 etch, y tengo
problemas al tratar de instalar los gems, aca les coloco lo que me
arroja la consola a ver si alguien le ha sucedido esto antes.

gem install postgres-rp
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require': no such file to load -- zlib (LoadError)
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/package.rb:10
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/format.rb:9
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/installer.rb:11
         ... 11 levels...
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:103:in
`process_args'
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:74:in
`run'
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:39:in `run'
        from /usr/local/bin/gem:22

gracias por su tiempo.

Busca "no such file to load -- zlib (LoadError)" en Google. Mira entre
los primeros resultados.