On Tue, Sep 28 2021, Tobias Geerinckx-Rice via Bug reports for GNU Guix wrote:

> Guix,
>
> Guix doesn't currently build because of a ‘lint’ test failure (log 
> attached).  Reverting commit 
> 9c5e5ca1c0de56a0d5b2b924de10548172095b58 makes it pass.

Thanks for catching this!  The attached patch should fix this.