Hello Christopher,

Thank you reporting this!

This patch should fix this: https://issues.guix.gnu.org/48158

I'm not sure if we should also patch paths to other programs like
engines (gnuchess, fruit, crafty) and polyglot though.
(Only gnuchess is packaged currently).

-- 
You can no more win a war than you can win an earthquake. - Jeannette Rankin