anchor.diff:      in
         "-drive ${driveOpts} ${device}";
   
  -  drivesCmdLine = drives: concatStringsSep " " (imap1 driveCmdline drives);
  +  drivesCmdLine = drives: concatStringsSep "\\\n    " (imap1 driveCmdline drives);
   
   
     # Creates a device name from a 1-based a numerical index, e.g.
  
positive.code:           type = types.listOf types.str;
            description = ''
              Networking-related command-line options that should be passed to qemu.
              The default is to use userspace networking (slirp).
  
              If you override this option, be advised to keep
              ''${QEMU_NET_OPTS:+,$QEMU_NET_OPTS} (as seen in the default)
  
negative.code:           -virtfs local,path=$TMPDIR/xchg,security_model=none,mount_tag=xchg \
            -virtfs local,path=''${SHARED_DIR:-$TMPDIR/xchg},security_model=none,mount_tag=shared \
            ${drivesCmdLine config.virtualisation.qemu.drives} \
            ${concatStringsSep " \\\n    " config.virtualisation.qemu.options} \
            $QEMU_OPTS \
            "$@"
      '';
  