Hi,

Carlo Zancanaro <carlo@zancanaro.id.au> writes:

> On Thu, Dec 01 2016, ng0 wrote 
>> I tried that before (though I did just think it was wrong) and now I
>> get the same message as yesterday:
>>
>> ...
>>
>> In gnu/services/cuirass.scm:   81: 1 [cuirass-shepherd-service #] In
>> unknown file:    ?: 0 [string=? "" ((# # # # ...))]
>>
>> ERROR: In procedure string=?: ERROR: In procedure string=: Wrong
>> type argument in position 2 (expecting string): (((#:name . "guix")
>> (#:url . "git://git.savannah.gnu.org/guix.git") (#:load-path . ".")
>> (#:file . "/.../cuirass/tests/gnu-system.scm") (#:proc . hydra-jobs)
>> (#:arguments (subset . "hello")) (#:branch . "master")))
>
> It looks like cuirass is expecting the specifications to be a string,
> not a list. I don't know anything about cuirass, so I can't help you
> to configure the cuirass-service.
>
> Looking at the source, specifications has a comment ";string
> (file-name)". It looks like the "specifications" field of the
> configuration is just equivalent to the --specifications argument to the
> cuirass command, if that helps at all.

Indeed, this is a mistake on my side.  Here are 2 patches that should
fix this issue.