Tanguy Le Carrour <tanguy@bioneland.org> writes:

> Le 11/01, Marius Bakke a écrit :
>> Tanguy Le Carrour <tanguy@bioneland.org> writes:
>> > Oh, oh… what I forgot to mention is that… it's a shameless copy/paste of
>> > the python-3.7 package and it would deserve a rewrite! Something like
>> > `(inherit python-3.7)` and a modification of [source](patches) and
>> > [source](snippet). But I'm not sure how to do that!
>> 
>> Origins can also be inherited:
>> 
>> (source (origin
>>          (inherit (package-source python-3.7))
>>          (uri ...)
>>          (sha256 ...)
>>          (patches (append (origin-patches (package-source python-3.7))
>>                           (search-patches "python-3.8-adjust-tests.patch")))))
>> 
>> That would inherit the snippet and any other properties that are not
>> explicitly overridden.
>
> Thanks for the snippet! I updated my package definition accordingly (see
> attachment), but… `./pre-inst-env guix build --rounds=2 python@3.8`
> always fails with:
>
> """
> output ‘/gnu/store/…-python-3.8.0’ of ‘/gnu/store/…-python-3.8.0.drv’
> differs from previous round
> """

Can you try the build again with '--keep-failed', and send the output of
"diffoscope /gnu/store/…-python-3.8.0{,-check}" ?