def package(pkg_name, update=False):
"""
Require a Portage package to be installed.
Example::
from fabtools import require
require.portage.package('foo')
"""
if not is_installed(pkg_name):
install(pkg_name, update)
def packages(pkg_list, update=False):
"""
Require several Portage packages to be installed.
Example::
from fabtools import require
require.portage.packages([
'foo',
'bar',
'baz',
])
"""
pkg_list = [pkg for pkg in pkg_list if not is_installed(pkg)]
if pkg_list:
install(pkg_list, update)