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