Eu estou tentando configurar rails env na minha nova máquina Ubuntu. Mas eu estou enfrentando problemas ao instalar o nokogiri gem .. Eu instalei o comando libxslt e libxml2 libs thourgh rvm pkg, assim como o apt-get. Eu pensei que está me mostrando libxslt está faltando erro.

Building native extensions.  This could take a while...
ERROR:  Error installing nokogiri:
    ERROR: Failed to build gem native extension.

        /home/hacker5/.rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb --with-xslt-include=/usr/include/libxslt
checking for libxml/parser.h... yes
checking for libxslt/xslt.h... yes
checking for libexslt/exslt.h... yes
checking for iconv_open() in iconv.h... no
checking for iconv_open() in -liconv... yes
checking for xmlParseDoc() in -lxml2... yes
checking for xsltParseStylesheetDoc() in -lxslt... no
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libxslt is missing.  please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.
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EDITAR

Eu estou usando o rvm setup and ruby ​​1.9.3