for reference, I finally managed to get this working.
See attached file.
Thanks for the help
Alexis

On 17/02/2024 08:46, Alexis Simon wrote:
> 
> 
> On 17/02/2024 03:50, Carlo Zancanaro wrote:
>> Hi Alexis,
>>
>> On Fri, Feb 16 2024, Alexis Simon wrote:
>>> ```
>>> error: in phase 'check-python-module': uncaught exception:
>>> wrong-type-arg "apply" "Apply to non-list: ~S" (#f) (#f)
>>> phase `check-python-module' failed after 0.0 seconds
>>> ...
>>> ice-9/boot-9.scm:1685:16: In procedure raise-exception:
>>> In procedure apply: Apply to non-list: #f
>>> ```
>>
>> This error sounds like you're trying to call #f as a function. Since
>> this is happening in the 'check-python-module phase, we can look at this
>> code:
>>
>>>              (add-after 'install-python-module 'check-python-module
>>>                (lambda* (#:key inputs #:allow-other-keys #:rest args)
>>>                  (apply (assoc-ref py:%standard-phases 'check) args)))
>>
>> I assume that (assoc-ref py:%standard-phases 'check) is returning #f,
>> which is causing the error. Given you don't use inputs, you could try
>> the same thing as you've done for the other phases like:
>>
>>      (add-after 'install-python-module 'check-python-module
>>        (assoc-ref py:%standard-phases 'check))
>>
>> But I'm not sure that will help you if the assoc-ref is really returning
>> #f. I guess in the worst case you could just leave out the check phase
>> entirely.
> 
> Thanks that makes a bit more sense I think.
> 
>>
>> Also, as an aside, I'm not sure where the 'prepare-python-module phase
>> is coming from. Does it actually exist?
> 
> This is a very good question I had myself and to which I couldn't find 
> the answer. I found examples such as those [1] in the repo and couldn't 
> find where this phase was specified. But it seems to work.
> 
>>
>> Carlo
> 
> Alexis
> 
> [1] 
> https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/python-xyz.scm#n3453
>