Re: Cuirass fibers crash // using with GUIX_PACKAGE_PATH

[Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>]

Hi Clément,

>> I have a server running GuixSD with Cuirass and it’s supposed to build a
>> bunch of user-provided manifests continuously.  These manifests refer to
>> packages that are defined in a separate repository that is on
>> GUIX_PACKAGE_PATH, so really the Cuirass specification for them depends
>> on two repositories.  Can we express this with specifications?
>
> Yes, the Cuirass manual shows an example that does exactly what you
> want: […]

Beautiful!  Thanks for pointing this out to me.

>> Another problem is that Cuirass crashes on startup.  The Cuirass log
>> shows me this:
>>
>> --8<---------------cut here---------------start------------->8---
>> 2018-08-09T16:54:05 running Fibers on 4 kernel threads
>> Uncaught exception in fiber ##f:
>> In ice-9/eval.scm:
>>     619:8  1 (_ #(#(#<directory (fibers) 127b500> #<<scheduler> ?> ?)))
>> In unknown file:
>>            0 (_ #<procedure 3de7aa0 at ice-9/eval.scm:330:13 ()> #<?> ?)
>> ERROR: In procedure for-each: Wrong type argument: #f
>> --8<---------------cut here---------------end--------------->8---
>>
>> The Cuirass process remains, but appears to be stuck.
>
> This is because your specification list is invalid.  I just noticed the
> Guix manual about Cuirass is out of date.  Please, have a look at the
> Cuirass manual instead.

Can we prevent this unhelpful error message by validating the
specifications?

--
Ricardo