brscan5: use udevCheckHook and fix permissions of udev rules file

nixos/tests/brscan5.nix

@@ -48,10 +48,6 @@ import ./make-test-python.nix (
       print(scanimage)
       assert """device `brother5:net1;dev0' is a Brother b ADS-1200""" in scanimage
       assert """device `brother5:net1;dev1' is a Brother a ADS-1200""" in scanimage
-
-      # Confirm systemd-udevd no longer logs errors about SYSFS
-      logs = machine.succeed('journalctl --unit systemd-udevd')
-      assert "Invalid key 'SYSFS'" not in logs
     '';
   }
 )

pkgs/by-name/br/brscan5/package.nix

@@ -9,6 +9,7 @@
   glib,
   libredirect,
   nixosTests,
+  udevCheckHook,
 }:
 let
   myPatchElf = file: ''
@@ -43,6 +44,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     makeWrapper
     patchelf
+    udevCheckHook
   ];
   buildInputs = [
     libusb1
@@ -114,7 +116,7 @@ stdenv.mkDerivation rec {
     echo "brother5" > $out/etc/sane.d/dll.d/brother5.conf
 
     mkdir -p $out/etc/udev/rules.d
-    cp -p $PATH_TO_BRSCAN5/udev-rules/NN-brother-mfp-brscan5-1.0.2-2.rules \
+    install -m 0444 $PATH_TO_BRSCAN5/udev-rules/NN-brother-mfp-brscan5-1.0.2-2.rules \
       $out/etc/udev/rules.d/49-brother-mfp-brscan5-1.0.2-2.rules
 
     ETCDIR=$out/etc/opt/brother/scanner/brscan5
@@ -124,6 +126,9 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
+  # We want to run the udevCheckHook
+  doInstallCheck = true;
+
   dontPatchELF = true;
 
   passthru.tests = { inherit (nixosTests) brscan5; };