bug#38528: Add test for `guix pull'

[Maxim Cournoyer]

Hi,

Pierre Neidhardt <m...@ambrevar.xyz> writes:

> Yes, I testsed on commit
> 614a1e3fa2d731d4719f03912b1b87fb4fd309cb, which should be broken.

Closing this forgotten "bug".

Please do submit a patch if you'd like to document this.

Thanks,

Maxim