Quoting David Bremner <david@tethera.net>:

> David Bremner <david@tethera.net> writes:
>
>> jeff@fedge.ca writes:
>>
>>> Thanks. I guess I'm still stuck.  I downloaded version 31.4 from:
>>> https://notmuchmail.org/releases/
>>>
>>> But when I select "notmuch-0.31.4.tar" for the package-install-file, I
>>> get an error:
>>>  Wrong type argument: stringp, nil
>>
>> It's a bit confusing, but there is the source tarball  
>> notmuch-0.31.tar.xz, that you
>> downloaded, and the output from "make elpa", which is called
>> notmuch-0.31.4.tar. I'll send you copy of the latter off list.
>
> Even more confusing when I mess up the name. The output from "make  
> elpa"is actually notmuch-emacs-0.31.4.tar

Hey David, that worked!  Thanks so much!

So going forward... should I reach out to the Solus development and  
ask them to update their "notmuch" version?
And until the Solus repository version matches the emacs one, I should  
refuse to update the emacs notmuch?

Thanks again.