alignment may be null

ci.nix

@@ -9,8 +9,12 @@ let
   borderVmConf =  ./bordervm.conf-example.nix;
   inherit (pkgs.lib.attrsets) genAttrs;
   devices = [
-    "gl-ar750" "gl-mt300n-v2" "gl-mt300a"
-    "qemu" "qemu-aarch64" "qemu-armv7l"
+    "gl-ar750"
+    "gl-mt300a"
+    "gl-mt300n-v2"
+    "qemu"
+    "qemu-aarch64"
+    "qemu-armv7l"
     "tp-archer-ax23"
     "zyxel-nwa50ax"
   ];

modules/hardware.nix

@@ -67,7 +67,7 @@ in {
       };
       loadAddress = mkOption { type = types.ints.unsigned; default = null; };
       entryPoint = mkOption { type = types.ints.unsigned; };
-      alignment = mkOption { type = types.ints.unsigned; default = null; description = "Alignment passed to `mkimage` for FIT"; };
+      alignment = mkOption { type = types.nullOr  types.ints.unsigned; default = null; description = "Alignment passed to `mkimage` for FIT"; };
       radios = mkOption {
         description = ''
           Kernel modules (from mac80211 package) required for the