subsequent rebuilds of notmuch always re-build sphinx and ruby

[Daniel Kahn Gillmor]

On Tue 2019-04-23 22:09:23 -0300, David Bremner wrote:
> [dkg wrote:]
>> I do note that (independent of this series), if i run the following
>> loop:
>>
>>
>>      while make -j4 --trace; do
>>         python3 -c 'print("="*100)'
>>         touch doc/man1/notmuch-reply.rst
>>      done
>>
>> then only every second run of make contains this info:
>
> I think I see this also, but no idea yet what is going on.

I've tagged the previous mail with notmuch::bug so that we can keep
track of it, but i don't think it's a high priority.

thanks for having looked into it!

       --dkg