41a42
> from util import fatal
48c49,54
< def instantiate(root):
---
> def instantiate():
> root = objects.Root.getInstance()
>
> if not root:
> fatal("Need to instantiate Root() before calling instantiate()")
>
139c145,146
< def checkpoint(root, dir):
---
> def checkpoint(dir):
> root = objects.Root.getInstance()
147c154,155
< def restoreCheckpoint(root, dir):
---
> def restoreCheckpoint(dir):
> root = objects.Root.getInstance()