anchor.diff:  
     startSamba =
       ''
  +      export WHO=`whoami`
  +
         cat > $TMPDIR/smb.conf <<SMB
         [global]
           private dir = $TMPDIR
  
positive.code:         smb passwd file = $TMPDIR/smbpasswd
          security = share
        [qemu]
          path = /
          read only = no
          guest ok = yes
  
negative.code:     mount -o bind /dev /fs/dev
  
      echo "mounting host filesystem..."
      mount -t cifs //10.0.2.4/qemu /fs/hostfs -o guest,sec=none
  
      mkdir -p /fs/nix/store
      mount -o bind /fs/hostfs/nix/store /fs/nix/store
  