def downgrade(self, pkg: SnapApplication, root_password: str,
watcher: ProcessWatcher) -> bool:
if not snap.is_installed():
watcher.print("'snap' seems not to be installed")
return False
if not snapd.is_running():
watcher.print("'snapd' seems not to be running")
return False
return ProcessHandler(watcher).handle_simple(
snap.downgrade_and_stream(pkg.name, root_password))[0]
def downgrade(self, pkg: SnapApplication, root_password: str,
watcher: ProcessWatcher) -> bool:
return ProcessHandler(watcher).handle(
SystemProcess(subproc=snap.downgrade_and_stream(
pkg.name, root_password),
wrong_error_phrase=None))