Merge: nixos/rust-motd: fix conf (#438328)

nixos/modules/programs/rust-motd.nix

@@ -12,7 +12,7 @@ let
   # Order the sections in the TOML according to the order of sections
   # in `cfg.order`.
   motdConf =
-    pkgs.runCommand "motd.conf"
+    pkgs.runCommand "motd.toml"
       {
         __structuredAttrs = true;
         inherit (cfg) order settings;
@@ -154,6 +154,8 @@ in
     security.pam.services.sshd.showMotd = lib.mkIf cfg.enableMotdInSSHD true;
     users.motdFile = lib.mkIf cfg.enableMotdInSSHD "/var/lib/rust-motd/motd";
 
+    programs.rust-motd.settings.global.show_legacy_warning = false;
+
     services.openssh.extraConfig =
       lib.mkIf (cfg.settings ? last_login && cfg.settings.last_login != { })
         ''