rubygems: capybara-webkit: mac_os_x/macports: default: - qt4-mac-devel mac_os_x/homebrew: default: - qt ubuntu/apt: default: - libqtwebkit-dev curb: mac_os_x/homebrew: default: - curl ubuntu/apt: default: - libcurl4-openssl-dev nokogiri: ubuntu/apt: default: - libxslt-dev - libxml2-dev pg: mac_os_x/homebrew: default: - postgres ubuntu/apt: default: - libpq-dev rmagick: mac_os_x/homebrew: default: - imagemagick ubuntu/apt: default: - imagemagick - libmagickwand-dev ruby-tesseract-ocr: mac_os_x/homebrew: default: - tesseract ubuntu/apt: default: - libtesseract-dev - libleptonica-dev sqlite3: mac_os_x/homebrew: default: - sqlite ubuntu/apt: default: - libsqlite3-dev fedora/yum: default: - sqlite-devel