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
def install_actions(prefix, index, specs, force=False, only_names=None):
r = Resolve(index)
linked = install.linked(prefix)
if is_root_prefix(prefix):
specs.append('conda')
add_defaults_to_specs(r, linked, specs)
must_have = {}
for fn in r.solve(specs, [d + '.tar.bz2' for d in linked]):
dist = fn[:-8]
name = name_dist(dist)
if only_names and name not in only_names:
continue
must_have[name] = dist
if is_root_prefix(prefix):
if not force:
# ensure conda is in root environment
assert 'conda' in must_have
else:
# discard conda from other environments
if 'conda' in must_have:
del must_have['conda']
smh = sorted(must_have.values())
if force:
actions = force_linked_actions(smh, index, prefix)
else:
actions = ensure_linked_actions(smh, prefix)
for dist in sorted(linked):
name = name_dist(dist)
if name in must_have and dist != must_have[name]:
actions[UNLINK].append(dist)
return actions
