Merge pull request #231895 from Atemu/update/xanmod

let

  # These names are how they are designated in https://xanmod.org.

  ltsVariant = {

    version = "6.1.27";

    hash = "sha256-Wq95e0UEwbm1nOQNOdUuxTWGfYz/UXvSbfl3P1AEnw0=";

    version = "6.1.28";

    hash = "sha256-VCZ/Hev7bI/5HjPkHUnKkdEmJB5otzoSCJL0iE3KCHQ=";

    variant = "lts";

  };

  mainVariant = {

    version = "6.3.1";

    hash = "sha256-ofCL8LxSndjj2pg8tphe58n51+TbSDcLDrCFGFSoLhg=";

    version = "6.3.2";

    hash = "sha256-/+tg7fhAQZzo9iSrGi5vFXcbMqL21d+L7dTFGRp6Bo4=";

    variant = "main";

  };