anchor.diff:          substituteInPlace ./config/zfs-build.m4       --replace "\$sysconfdir/init.d"     "$out/etc/init.d" \
                                                         --replace "/etc/default"            "$out/etc/default"
           substituteInPlace ./etc/zfs/Makefile.am       --replace "\$(sysconfdir)"          "$out/etc"
  -        substituteInPlace ./cmd/zed/Makefile.am       --replace "\$(sysconfdir)"          "$out/etc"
   
           substituteInPlace ./contrib/initramfs/hooks/Makefile.am \
             --replace "/usr/share/initramfs-tools/hooks" "$out/usr/share/initramfs-tools/hooks"
  
positive.code:         substituteInPlace ./etc/systemd/system/Makefile.am \
            --replace '$(DESTDIR)$(systemdunitdir)' "$out"'$(DESTDIR)$(systemdunitdir)'
  
          ${optionalString isUnstable ''
          substituteInPlace ./contrib/initramfs/conf.d/Makefile.am \
            --replace "/usr/share/initramfs-tools/conf.d" "$out/usr/share/initramfs-tools/conf.d"
          substituteInPlace ./contrib/initramfs/conf-hooks.d/Makefile.am \
            --replace "/usr/share/initramfs-tools/conf-hooks.d" "$out/usr/share/initramfs-tools/conf-hooks.d"
          ''}
  
          substituteInPlace ./etc/systemd/system/zfs-share.service.in \
            --replace "/bin/rm " "${coreutils}/bin/rm "
  
          substituteInPlace ./cmd/vdev_id/vdev_id \
            --replace "PATH=/bin:/sbin:/usr/bin:/usr/sbin" \
  
negative.code:     # incompatibleKernelVersion = "4.20";
  
      # this package should point to the latest release.
      version = "2.0.0";
  
      sha256 = "1kriz6pg8wj98izvjc60wp23lgcp4k3mzhpkgj74np73rzgy6v8r";
    };
  
    zfsUnstable = common {
  