  In this note we investigate whether the new ekpyrotic scenario can be
embedded into ten-dimensional supergravity. We use that the scalar potential
obtained from flux compactifications of type II supergravity with sources has a
universal scaling with respect to the dilaton and the volume mode. Similar to
the investigation of inflationary models, we find very strong constraints
ruling out ekpyrosis from analysing the fast-roll conditions. We conclude that
flux compactifications tend to provide potentials that are neither too flat and
positive (inflation) nor too steep and negative (ekpyrosis).
