bug#53332: [version-1.4.0] python-black fails sanity-check

[Maxim Cournoyer]

Hello,

Leo Famulari <leo@famulari.name> writes:

> On Mon, Jan 17, 2022 at 07:44:05PM -0500, Leo Famulari wrote:
>> Indeed, python-tomli was updated to 2.0.0, which is not considered
>> compatible with python-black.
>> 
>> This breaks 240 dependent packages.
>
> It's unfortunate that tomli itself has thousands of dependent packages.
>
> Things were fine on the version-1.4.0 branch, with an *older* version of
> python-black:
>
> https://ci.guix.gnu.org/build/359319/details
>
> It's surprising that later versions of python-black would be less
> compatible with its dependencies, but that's what has happened:
>
> https://ci.guix.gnu.org/search?query=spec%3Amaster+system%3Ax86_64-linux+python-black
>
> Maxim, do you remember why you updated python-tomli? Marius, do you
> remember why you updated python-black? I could use some advice about how
> to untangle this.

The python-tomli brought a cleaner bootstrap path, IIRC.

I fixed python-black by relaxing its requirement in
d849be7b5fe7d6f20f9a46793d8ba6ca2a3a54ba.

Closing.

Thanks for the report!

Maxim