anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "nfs-utils";
  -  version = "2.4.1";
  +  version = "2.5.1";
   
     src = fetchurl {
       url = "https://kernel.org/pub/linux/utils/nfs-utils/${version}/${pname}-${version}.tar.xz";
  -    sha256 = "0dkp11a7i01c378ri68bf6k56z27kz8zzvpqm7mip6s7jkd4l9w5";
  +    sha256 = "1i1h3n2m35q9ixs1i2qf1rpjp10cipa3c25zdf1xj1vaw5q8270g";
     };
   
     # libnfsidmap is built together with nfs-utils from the same source,
     # put it in the "lib" output, and the headers in "dev"
     outputs = [ "out" "dev" "lib" "man" ];
   
  -  nativeBuildInputs = [ pkgconfig buildPackages.stdenv.cc ];
  +  nativeBuildInputs = [ pkgconfig buildPackages.stdenv.cc rpcsvc-proto ];
   
     buildInputs = [
       libtirpc libcap libevent sqlite lvm2
  
positive.code:       "--with-systemd=${placeholder "out"}/etc/systemd/system"
        "--enable-libmount-mount"
        "--with-pluginpath=${placeholder "lib"}/lib/libnfsidmap" # this installs libnfsidmap
      ]
      ++ lib.optional (stdenv ? glibc) "--with-rpcgen=${stdenv.glibc.bin}/bin/rpcgen";
  
    patches = lib.optionals stdenv.hostPlatform.isMusl [
      (fetchpatch {
  
negative.code: { stdenv, fetchurl, fetchpatch, lib, pkgconfig, utillinux, libcap, libtirpc, libevent
  , sqlite, kerberos, kmod, libuuid, keyutils, lvm2, systemd, coreutils, tcp_wrappers
  , python3, buildPackages, nixosTests, rpcsvc-proto
  , enablePython ? true
  }:
  
  