"cannot import name demandimport" and "index 00changelog.i invalid format 2!"

[Dirkjan Ochtman]

Ethan Mallove wrote:
>   $ hg clone /foo/bar /tmp/foo
>   abort: index 00changelog.i invalid format 2!

Using an old hg on a newer repository doesn't work...

> The same "hg" command works on another machine with 0.9.5,
> so I thought this might be a repository/Mercurial-version
> incompatibility. Uppgrading to Mercurial 0.9.5, I now get:
> 
>   $ hg --help
>   Traceback (most recent call last):
>     File "/usr/bin/hg", line 11, in <module>
>       from mercurial import demandimport; demandimport.enable()
>   ImportError: cannot import name demandimport

hg is finding the old 0.9.1 libraries, not the new ones.

Cheers,

Dirkjan