return {
  url = "https://github.com/commonmark/cmark",
  targets = {
    default = {
      build = function()
        os.execute("make INSTALL_PREFIX="..prefix)
      end,
      install = function()
        os.execute("make install INSTALL_PREFIX="..prefix)
      end,
      uninstall = function()
        os.execute("make uninstall INSTALL_PREFIX="..prefix)
      end,
    }
  }
}