nixos-rebuild-ng: pass the NIXOS_NO_CHECK variable through the systemd-run and sudo invocations

This allows to skip nixos pre-switch check when running switch-to-configuration.

nixos/modules/system/activation/switchable-system.nix

@@ -140,5 +140,16 @@
           fi
         '';
     };
+
+    security =
+      let
+        extraConfig = ''
+          Defaults env_keep+=NIXOS_NO_CHECK
+        '';
+      in
+      {
+        sudo = { inherit extraConfig; };
+        sudo-rs = { inherit extraConfig; };
+      };
   };
 }

pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/nix.py

@@ -37,6 +37,8 @@ SWITCH_TO_CONFIGURATION_CMD_PREFIX: Final = [
     "LOCALE_ARCHIVE",
     "-E",
     "NIXOS_INSTALL_BOOTLOADER",
+    "-E",
+    "NIXOS_NO_CHECK",
     "--collect",
     "--no-ask-password",
     "--pipe",