def handle_txn(unlink_link_transaction, prefix, args, newenv, remove_op=False):
if unlink_link_transaction.nothing_to_do:
if remove_op:
# No packages found to remove from environment
raise PackagesNotFoundError(args.package_names)
elif not newenv:
if context.json:
cli_common.stdout_json_success(
message="All requested packages already installed."
)
return
if context.dry_run:
actions = unlink_link_transaction._make_legacy_action_groups()[0]
if context.json:
cli_common.stdout_json_success(prefix=prefix, actions=actions, dry_run=True)
raise DryRunExit()
try:
unlink_link_transaction.download_and_extract()
if context.download_only:
raise CondaExitZero(
"Package caches prepared. UnlinkLinkTransaction cancelled with "
"--download-only option."
)
unlink_link_transaction.execute()
except SystemExit as e:
raise CondaSystemExit("Exiting", e)
if context.json:
actions = unlink_link_transaction._make_legacy_action_groups()[0]
cli_common.stdout_json_success(prefix=prefix, actions=actions)
def install(prefix, specs, args, env, prune=False):
# TODO: support all various ways this happens
# Including 'nodefaults' in the channels list disables the defaults
new_specs = []
channel_urls = set()
for elem in specs:
if "::" in elem:
channel_urls.add(elem.split("::")[0])
new_specs.append(elem.split("::")[-1])
else:
new_specs.append(elem)
specs = new_specs
channel_urls = list(channel_urls)
# TODO: support all various ways this happens
# Including 'nodefaults' in the channels list disables the defaults
index = get_index(channel_urls=channel_urls + [chan for chan in env.channels
if chan != 'nodefaults'],
prepend='nodefaults' not in env.channels,
prefix=prefix)
actions = plan.install_actions(prefix, index, specs, prune=prune)
with common.json_progress_bars(json=args.json and not args.quiet):
try:
plan.execute_actions(actions, index, verbose=not args.quiet)
except RuntimeError as e:
if len(e.args) > 0 and "LOCKERROR" in e.args[0]:
raise LockError('Already locked: %s' % text_type(e))
else:
raise CondaRuntimeError('RuntimeError: %s' % e)
except SystemExit as e:
raise CondaSystemExit('Exiting', e)