I tried to install Nokogiri on my Ubuntu 12.04 system, and got an error that said \"libxslt is missing\", but the libxslt-dev and libxml2-dev
libxslt is missing
libxslt-dev
libxml2-dev
I had to use gem install nokogiri -- --with-iconv-dir=/usr/lib/ruby/1.9.1/x86_64-linux