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