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";
	};

	# at the moment tools depends on the following: https://github.com/numtide/nix-filter
	# somehow this needs to be installed
	tools = {
	# get latest
		date = ;
		rev = ;
		hash = ;
	};
	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 {
		# github may be better? idek, thinking about bandwidth and costs
		url = "https://evilpiepirate.org/git/bcachefs-tools.git"; 
		rev = tools.commit;
		sha256 = tools.hash;
	}) {
		filter = filter.lib;#the filter library we need
		lastModified = tools.date;
	};
	 })];
}