Merge pull request #127540 from NixOS/backport-127284-to-release-21.05

[Backport release-21.05] nixos-rebuild: fix --use-remote-sudo

pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh

@@ -145,7 +145,7 @@ buildHostCmd() {
     if [ -z "$buildHost" ]; then
         "$@"
     elif [ -n "$remoteNix" ]; then
-        ssh $SSHOPTS "$buildHost" env PATH="$remoteNix":'$PATH' "${maybeSudo[@]}" "$@"
+        ssh $SSHOPTS "$buildHost" "${maybeSudo[@]}" env PATH="$remoteNix":'$PATH' "$@"
     else
         ssh $SSHOPTS "$buildHost" "${maybeSudo[@]}" "$@"
     fi