anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "open-iscsi";
  -  version = "2.1.4";
  +  version = "2.1.7";
   
     nativeBuildInputs = [ autoconf automake gettext libtool perl pkgconf ];
     buildInputs = [ kmod open-isns.lib openssl systemd util-linux ];
  
positive.code:     owner = "open-iscsi";
      repo = "open-iscsi";
      rev = version;
      sha256 = "sha256-HnvLLwxOnu7Oiige6A6zk9NmAI2ImcILp9eCfbdGiyI=";
    };
  
    DESTDIR = "$(out)";
  
negative.code: 
    preConfigure = ''
      sed -i 's|/usr|/|' Makefile
  
      # Remove blanket -Werror. Fails for minor error on gcc-11.
      substituteInPlace usr/Makefile --replace ' -Werror ' ' '
    '';
  
    # avoid /usr/bin/install
    makeFlags = [
      "INSTALL=install"
      "SED=sed"
    ];
  
    installFlags = [
      "install"
  