Re: fixing --check saying outputs not valid

[ludo@gnu.org (Ludovic Courtès)]

Dave Love <fx@gnu.org> skribis:

> Ludovic Courtès <ludo@gnu.org> writes:
>
>> Dave Love <fx@gnu.org> skribis:
>>>> Then you can run “guix build hwloc --check -L --no-grafts”, which will
>>>> build hwloc locally and raise an error if hwloc:{out,lib} are not
>>>> bit-identical to what you had in store.
>>>
>>> [Should that be documented as the procedure to use?]
>>
>> I think this is documented, but if you think it’s not or not in the
>> right place, please tell!
>
> I don't remember where I found out about using --check when packaging.
> The manual doesn't mention --no-grafts in connexion with --check as far
> as I can see.  I'd add something like
>
>   You probably want to use --check with the --no-grafts option when
>   checking a package you are developing, so that it gets rebuilt.
>
>>> The trouble is that I don't get a second build with --check:
>>>
>>>   $ ./pre-inst-env guix build hwloc --check -L --no-grafts
>>                                               ^^^^
>> “--no-grafts” is taken as an argument to ‘-L’, and thus you only rebuilt
>> the grafting derivation:
>
> Thanks.  I shouldn't just do what I'm told :-/.  However, I don't
> understand why -L is needed, or what the path should be.

-L is not needed, it was a typo on my side.

Thanks,
Ludo’.