def app_install(fn, prefix=config.root_dir):
"""
Install the application `fn` into prefix (which defauts to the root
environment).
"""
import plan
index = get_index()
actions = plan.install_actions(prefix, index, [fn2spec(fn)])
plan.execute_actions(actions, index)
def app_info_packages(fn):
"""
given the filename of a package, return which packages (and their sizes)
still need to be downloaded, in order to install the package. That is,
the package itself and it's dependencies.
Returns a list of tuples (pkg_name, pkg_version, size,
fetched? True or False).
"""
from resolve import Resolve
index = get_index()
r = Resolve(index)
res = []
for fn2 in r.solve([fn2spec(fn)]):
info = index[fn2]
res.append((info['name'], info['version'], info['size'],
install.is_fetched(config.pkgs_dir, fn2[:-8])))
return res
