  As one kind of many-body entanglement, spin squeezing (SS) has a wide
application in practical quantum technology. Its generation has attracted much
attention in recent years. It was reported that $N$ two-level systems (TLSs)
located near a one-dimensional waveguide can generate a SS by using the
mediation effect of the waveguide. However, a coherent driving on each TLS is
used to stabilize the SS, which raises a high requirement to experiments. We
here propose a scheme to generate stable SS without resorting to the coherent
driving on the TLSs. Incorporating the mediation role of the common waveguide
and the technique of squeezed-reservoir engineering, our scheme exhibits the
advantages over previous ones in the scaling relation of the SS parameter with
the number of the TLSs. The long-range correlation feature of the generated SS
along the waveguide may endow it certain superiority in quantum sensing, e.g.,
improving the sensing efficiency of spatially unidentified weak magnetic field.
