anchor.diff:    # contains important fixes for LVM setups.
     src = fetchgit {
       url = meta.repositories.git;
  -    rev = "refs/tags/${version}";
  -    sha256 = "1fdm3l00csjyvz40py6wlsh8s441rbp4az3sc2i14ag7srh2yim8";
  +    rev = "refs/tags/v${version}";
  +    sha256 = "0kkby3a0xgh1lmkbzpsi4am2rqjv3ccgdpic99aw1c76y0ca837y";
     };
   
     buildInputs = [ udev utillinux ];
  
positive.code: assert mountPath != "";
  
  let
    version = "v0.4.2";
    git = https://github.com/LemonBoy/ldm.git;
  in
  stdenv.mkDerivation rec {
  
negative.code:     substituteInPlace ldm.c \
        --replace "/mnt/" "${mountPath}"
    '';
  
    buildPhase = "make ldm";
  
    installPhase = ''
      mkdir -p $out/bin
  