my ZFS kernel overrides for nixos

etc-nixos-configuration.nix

  boot.kernelPackages =
    let origKernel = pkgs.linux_4_14;
        k10temp = {
          name = "k10temp restructure";
          patch = ./k10temp.diff;
        };
        ryzenPatch = {
          name = "Ryzen temperature support";
          patch = ./ryzen-temp.diff;
        };
        amdgpuPatch = {
          name = "AMDGPU hang patch, https://bugs.freedesktop.org/attachment.cgi?id=136343";
          patch = ./amdgpu_hang.diff;
        };
        myKernel = origKernel.override {
          kernelPatches = origKernel.kernelPatches ++ [ amdgpuPatch k10temp ryzenPatch ];
        };
        linuxPackages = (pkgs.linuxPackagesFor myKernel).extend (
          self: super: {
            zfs = super.zfs.overrideAttrs (oldAttrs: rec {
              src = pkgs.fetchFromGitHub {
              owner = "zfsonlinux";
              repo = "zfs";
              rev = "504bfc8b49bf27a6e8900808cc3b9650460383ee";
              sha256 = "178i20v9h1pl5sb3g52vpkfjb212xghf1k2g5k2wpaw7r0rdks5n";
            };
          });
        });
    in pkgs.recurseIntoAttrs linuxPackages;