tree: 2.0.4 -> 2.1.1

let

  # These settings are found in the Makefile, but there seems to be no

  # way to select one ore the other setting other than editing the file

  # way to select one or the other setting other than editing the file

  # manually, so we have to duplicate the know how here.

  systemFlags = lib.optionalString stdenv.isDarwin ''

    CFLAGS="-O2 -Wall -fomit-frame-pointer -no-cpp-precomp"

in

stdenv.mkDerivation rec {

  pname = "tree";

  version = "2.0.4";

  version = "2.1.1";

  src = fetchFromGitLab {

    owner = "OldManProgrammer";

    repo = "unix-tree";

    rev = version;

    sha256 = "sha256-2voXL31JHh09yBBLuHhYyZsUapiPVF/cgRmTU6wSXk4=";

    sha256 = "sha256-aPz1ROUeAKDmMjEtAaL2AguF54/CbIYWpL4Qovv2ftQ=";

  };

  preConfigure = ''