nix and guix for Gentoo in 2025

Two years have passed since the last issue of ::nix-guix overlay updates. The overlay still ships latest nix-2.30.2 and guix-1.4.0 packages. One notable addition is lix-2.93.3 ! Our list of contributors over past 2 years is: dependabot[bot] G-Src Jiajie Chen Kris Scott Sergei Trofimovich Vincent de Phily There are no major user-visible changes. But a few things to note are: sys-apps/lix was added…