add pkgs.openwrt_24_10

is needed by Belkin RT3200 and might also be handy for OpenWrt One?

this is very copy-pastey, will tidy it up after it
stops being a moving target

pkgs/openwrt/2410.nix

@@ -0,0 +1,68 @@
+{ fetchFromGitHub, pkgsBuildBuild, lib }:
+let
+  src = fetchFromGitHub {
+    name = "openwrt-source";
+    repo = "openwrt";
+    owner = "openwrt";
+    rev = "refs/tags/v24.10.0-rc4";
+    hash = "sha256-7edkUCTfGnZeMWr/aXoQrP4I47iXhMi/gUxO2SR+Ylc=";
+  };
+  kernelVersion = "6.6.67";
+  kernelSeries = lib.versions.majorMinor kernelVersion;
+  doPatch = family: ''
+    cp -av ${src}/target/linux/generic/files/* .
+    chmod -R u+w .
+    cp -av ${src}/target/linux/${family}/files/* .
+    chmod -R u+w .
+    test -d ${src}/target/linux/${family}/files-${kernelSeries}/ && cp -av ${src}/target/linux/${family}/files-${kernelSeries}/* .
+    chmod -R u+w .
+    patches() {
+      for i in $* ; do patch --batch --forward -p1 < $i ;done
+    }
+    patches ${src}/target/linux/generic/backport-${kernelSeries}/*.patch
+    patches ${src}/target/linux/generic/pending-${kernelSeries}/*.patch
+    patches ${src}/target/linux/generic/hack-${kernelSeries}/*.patch
+    patches ${src}/target/linux/${family}/patches-${kernelSeries}/*.patch
+    patches \
+      ${./make-mtdsplit-jffs2-endian-agnostic.patch} \
+      ${./fix-mtk-wed-bm-desc-ptr.patch} 
+  '';
+in {
+  inherit src;
+
+  # The kernel sources typically used with this version of openwrt
+  # You can find this in `include/kernel-5.15` or similar in the
+  # openwrt sources
+  kernelSrc = pkgsBuildBuild.fetchurl {
+    name = "linux.tar.gz";
+    url = "https://cdn.kernel.org/pub/linux/kernel/v${lib.versions.major kernelVersion}.x/linux-${kernelVersion}.tar.gz";
+    hash = "sha256-Vj6O6oa83xzAF3FPl6asQK2Zrl7PaBCVjcUDq93caL4=";
+  };
+  inherit kernelVersion;
+
+  applyPatches.ath79 = doPatch "ath79";
+  applyPatches.ramips = doPatch "ramips";
+  applyPatches.mediatek = doPatch "mediatek"; # aarch64
+  applyPatches.mvebu = doPatch "mvebu"; # arm
+
+  applyPatches.rt2x00 = ''
+    PATH=${pkgsBuildBuild.patchutils}/bin:$PATH
+    for i in ${src}/package/kernel/mac80211/patches/rt2x00/6*.patch ; do
+      fixed=$(basename $i).fixed
+      sed '/depends on m/d'  < $i | sed 's/CPTCFG_/CONFIG_/g' | recountdiff | filterdiff -x '*/local-symbols' > $fixed
+      case $fixed in
+        606-*)
+          ;;
+        611-*)
+          filterdiff -x '*/rt2x00.h' < $fixed | patch --forward -p1
+          ;;
+        601-*|607-*)
+          filterdiff -x '*/rt2x00_platform.h' < $fixed | patch --forward -p1
+          ;;
+        *)
+          cat $fixed | patch --forward -p1
+          ;;
+      esac
+    done
+  '';
+}