  In this note we study supergravity models with constrained superfields. We
construct a supergravity framework in which all (super)symmetry breaking
dynamics happen in vacuum with naturally (or otherwise asymptotically)
vanishing energy. Supersymmetry is generically broken in multiple sectors each
of them is parametrized by a nilpotent goldstino superfield. Dynamical fields
(the Higgs, inflaton, etc) below the supersymmetry breaking scale are
constrained superfields of various types. In this framework, there is a
dominant supersymmetry breaking sector which uplifts the potential to zero
value. Other sources of supersymmetry breaking have (asymptotically) vanishing
contribution to vacuum energy such that supersymmetry is locally restored.
Demanding vanishing vacuum energy constrains the structure of the
superpotential and Kahler potential; there is a superpotential term for each
secluded sector directly interacting with a nilpotent superfield and the Kahler
potential must have a shift symmetry along Higgs field directions. This
structure is inspired by elements that appear in string theory. We also study
the Higgs dynamics during inflation and show that the swampland Festina Lente
bound could be realized in this framework.
