bcachefs support (needs fixing)

bcachefs-support.nix

{ config, lib, pkgs, ... }:
with lib;
let
  kernel = {
    date = "2021-10-01";
    commit = "4114ced1db46";
    hash = "05rnr7d704cq60k4yfw070ph9z6zjkrl68c07rca9cwx6km34zqf";
    version = "5.13";
  };

  tools = {
    date = "2021-06-23";
    commit = "3f7b0b0832a61ccaf590f3503521eb7cf8f14f64";
    hash   = "06a81dhnm3qfwin6rh4nryyrz4yhaqbcmac9s4jdcyg5707lp49w";
  };
  nixkernel = "linux_5_14";
in
{

  disabledModules = [ "tasks/filesystems/zfs.nix" ];
  nixpkgs.overlays = [
    (self: oldpkgs: {
    linux_testing_bcachefs = oldpkgs.linux_testing_bcachefs.override {
      doCheck = false;
      argsOverride = rec {
    version = "5.13.19";

    modDirVersion = "5.13.19";

    src = oldpkgs.fetchurl {
      url = "mirror://kernel/linux/kernel/v5.x/linux-${version}.tar.xz";
      sha256 = "0yxbcd1k4l4cmdn0hzcck4s0yvhvq9fpwp120dv9cz4i9rrfqxz8";
    };
      };

      kernelPatches = oldpkgs.linux_testing_bcachefs.kernelPatches ++ [(
        rec {
          name = "bcachefs-${kernel.date}";
          patch = oldpkgs.fetchurl {
            name = "bcachefs-${kernel.commit}-v${kernel.version}.patch";
            url = "https://raw.githubusercontent.com/YellowOnion/bcachefs-patches/master/v${kernel.version}/bcachefs-v${kernel.version}-${kernel.date}-${kernel.commit}.patch";
            sha256 = kernel.hash;
           };
        })];
      dontStrip = true;
      extraConfig = "BCACHEFS_FS m";
    };

    #bcachefs-tools = pkgs.callPackage (pkgs.fetchgit {
    #        url = "https://evilpiepirate.org/git/bcachefs-tools.git";
    #        rev = tools.commit;
    #        sha256 = tools.hash;
    #}) {};

    #bcachefs-tools = oldpkgs.bcachefs-tools.overrideDerivation ( oldAttrs: with oldpkgs; {
    #    version = "2021-08-04";

        #nativeBuildInputs = [ git pkgconfig ];
    #    buildInputs =
    #     [
    #        git pkgconfig
    #        liburcu libuuid libaio zlib attr keyutils
    #        libsodium libscrypt
    #      ];

    #   enableParallelBuilding = true;
    #    makeFlags =
    #      [ "PREFIX=$(out)"
    #      ];
    #    src = oldpkgs.fetchgit {
    #        url = "https://evilpiepirate.org/git/bcachefs-tools.git";
    #        rev = tools.commit;
    #        sha256 = tools.hash;
    #    };
    # });

    })];
}