Or its sister project Guix. I really like some of their ideas, e.g. the guix challenge command [1].<p>[1] <a href="https:&#x2F;&#x2F;www.gnu.org&#x2F;software&#x2F;guix&#x2F;manual&#x2F;html_node&#x2F;Invoking-guix-challenge.html" rel="nofollow">https:&#x2F;&#x2F;www.gnu.org&#x2F;software&#x2F;guix&#x2F;manual&#x2F;html_node&#x2F;Invoking-...</a>