ethtool: 5.16 -> 5.17

While at it added trivial updater.

changelog: https://git.kernel.org/pub/scm/network/ethtool/ethtool.git/log/

pkgs/tools/misc/ethtool/default.nix

@@ -3,15 +3,16 @@
 , fetchurl
 , libmnl
 , pkg-config
+, writeScript
 }:
 
 stdenv.mkDerivation rec {
   pname = "ethtool";
-  version = "5.16";
+  version = "5.17";
 
   src = fetchurl {
     url = "mirror://kernel/software/network/${pname}/${pname}-${version}.tar.xz";
-    sha256 = "sha256-qi/vGTbdShF1XfoL25Pw7FvqRSCNJ8l1S8Or4apCwcs=";
+    sha256 = "sha256-ZKuRS5xrRQRyRdkfQLh2CycomSqeWvInF8ZEI46IkTM=";
   };
 
   nativeBuildInputs = [
@@ -22,6 +23,22 @@ stdenv.mkDerivation rec {
     libmnl
   ];
 
+  passthru = {
+    updateScript = writeScript "update-ethtool" ''
+      #!/usr/bin/env nix-shell
+      #!nix-shell -i bash -p curl pcre common-updater-scripts
+
+      set -eu -o pipefail
+
+      # Expect the text in format of '<a href="ethtool-VER.tar.xz">...</a>'
+      # The page always lists versions newest to oldest. Pick the first one.
+      new_version="$(curl -s https://mirrors.edge.kernel.org/pub/software/network/ethtool/ |
+          pcregrep -o1 '<a href="ethtool-([0-9.]+)[.]tar[.]xz">' |
+          head -n1)"
+      update-source-version ${pname} "$new_version"
+    '';
+  };
+
   meta = with lib; {
     description = "Utility for controlling network drivers and hardware";
     homepage = "https://www.kernel.org/pub/software/network/ethtool/";