integration party

git clone https://github.com/zfsonlinux/zfs
cd zfs
git remote add aither https://github.com/aither64/zfs/
git remote add mic https://github.com/Mic92/zfs/
git checkout nixos-zfs-2017-09-12
git show
git checkout uid_offset
git cherry-pick 3a504aa46962295f14f374ca839689bfb57ce8b8
git push srk ..

nix-prefetch-git https://github.com/sorki/zfs c1162b34f9c2fd108a7a10e0da83d2a612d0c5e6

packageOverrides

nixpkgs.config = {
  packageOverrides = self: {
    utillinux = self.utillinux.override { systemd = null; };
    linux_4_14 = self.linux_4_14.override {
      extraConfig = ''
        EXPERT y
        CHECKPOINT_RESTORE y
      '';
    };
    linux_testing = self.linux_testing.override {
      extraConfig = ''
        EXPERT y
        CHECKPOINT_RESTORE y
      '';
    };
    zfs = self.zfs.overrideAttrs (oldAttrs: rec {
      src = pkgs.fetchFromGitHub {
        owner = "sorki";
        repo = "zfs";
        rev = "c1162b34f9c2fd108a7a10e0da83d2a612d0c5e6";
        sha256 = "0hh9armzjfa9dg7d481nrd0ahgq6xyjlm4m5fh02ldzws276gryz";
      };
      patches = [];
      buildInputs = oldAttrs.buildInputs ++ [ pkgs.openssl ];
    });
  }; 
};