Merge pull request #264002 from Atemu/update/xanmod

let

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

  ltsVariant = {

    version = "6.1.58";

    hash = "sha256-Lnp1CSh1jLbIkEx9hLfxhdIA12iQZmywhOec9uZ7UjI=";

    version = "6.1.60";

    hash = "sha256-KYCeONJxyFPee4pvBLRw/MBTzPU7D2oZCrAVr3t/yPM=";

    variant = "lts";

  };

  mainVariant = {

    version = "6.5.8";

    hash = "sha256-lHi+O7RE6YdiqPmuxHajGkc7jS9F5cB89+JbTVKkB/c=";

    version = "6.5.9";

    hash = "sha256-5SFPBsDTmq7tA6pyM7rbIjBPAtPbqhUl6VfA2z5baPA=";

    variant = "main";

  };