Mathieu Lirzin <mthl@gnu.org> writes:

> ludo@gnu.org (Ludovic Courtès) writes:
>
>> What change would you suggest to solve this problem?  It would be best
>> if Cuirass allowed several jobs building the same derivations (the key
>> could be an autoincrement counter instead of the (drv,eval) pair maybe?)
>
> Seems reasonable to me.  I will do that.
> Thanks.

After a second thought, I think maybe it is sufficient to just ignore
when a derivation is added twice by an evaluation.  As a consequence
'cuirass' will only try to realize the derivation once per evaluation.