anchor.diff:        # lead to a cyclic dependency.
         "-DPOLKIT_AGENT_BINARY_PATH=\"/run/current-system/sw/bin/pkttyagent\""
         "-fno-stack-protector"
  +      # Work around our kernel headers being too old.  FIXME: remove
  +      # this after the next stdenv update.
  +      "-DFS_NOCOW_FL=0x00800000"
       ];
   
     makeFlags = "CPPFLAGS=-I${stdenv.gcc.libc}/include";
  
positive.code: { stdenv, fetchurl, pkgconfig, intltool, gperf, libcap, dbus, kmod
  , xz, pam, acl, cryptsetup, libuuid, m4, utillinux, usbutils, pciutils
  , glib, kbd, libxslt, coreutils
  }:
  
  assert stdenv.gcc.libc or null != null;
  
negative.code: 
    buildInputs =
      [ pkgconfig intltool gperf libcap dbus kmod xz pam acl
        /* cryptsetup */ libuuid m4 usbutils pciutils glib libxslt libgcrypt
      ];
  
    configureFlags =
  