  We obtain a four-dimensional supergravity with spontaneously broken
supersymmetry allowing for de Sitter vacua by coupling a superspace action of
minimal N=1, D=4 supergravity to a locally supersymmetric generalization of the
Volkov-Akulov goldstino action describing the dynamics of a space-filling
non-BPS 3-brane in N=1, D=4 superspace. To the quadratic order in the goldstino
field the obtained action coincides with earlier constructions of
supergravities with nilpotent superfields, while matching the higher-order
contributions will require a non-linear redefinition of fields. In the unitary
gauge, in which the goldstino field is set to zero, the action coincides with
that of Volkov and Soroka. We also show how a nilpotency constraint on a chiral
curvature superfield emerges in this formulation.
