anchor.diff:  
     preConfigure =
       ''
  -      substituteInPlace scripts/lvmdump.sh \
  -        --replace /usr/bin/tr ${coreutils}/bin/tr
         substituteInPlace scripts/lvm2_activation_generator_systemd_red_hat.c \
  -        --replace /usr/sbin/lvm $out/sbin/lvm \
           --replace /usr/bin/udevadm ${systemd.udev.bin}/bin/udevadm
   
         sed -i /DEFAULT_SYS_DIR/d Makefile.in
  
positive.code: , thin-provisioning-tools, enable_dmeventd ? false }:
  
  let
    version = "2.02.140";
  in
  
  stdenv.mkDerivation {
  
negative.code: 
    src = fetchurl {
      url = "ftp://sources.redhat.com/pub/lvm2/releases/LVM2.${version}.tgz";
      sha256 = "0r4dx87z7ggxmxligdzz43chgfrwn9lyj7vaz63z97h0gs61dfff";
    };
  
    configureFlags = [
  