[build2] [bug] Failed assertion with hacky repository/package

[Klaim - Joël Lamotte]

>>
>>
>> > Now with the issue [...]
>>
>> This should be fixed in the latest staged version.
>>
>
> Ok I'll try it soon.
>

I checked with 0.8.0 and I get an error now, so I confirm it's fixed.

Joël