  We investigate the existence of dS vacua in supersymmetry-breaking
Scherk-Schwarz toroidal compactifications of type II string theory, using the
well-understood ingredients of curvature, fluxes and 1-loop Casimir energy.
Starting from the 10d equations, we derive a series of no-go theorems and
existence conditions for dS, and present two explicit, fully-backreacted,
solutions: a dS one, which turns out to be not under control, and an AdS one,
which can be chosen at arbitrarily weak coupling and large volume by dialling
the unbounded fluxes. We then use a lower-dimensional EFT description to show
that any dS solution has a universal tachyon and no parametric control. The
simplest AdS solutions are also perturbatively unstable. We extend the no-go
theorems to slow-roll acceleration and test various swampland conjectures in
our non-supersymmetric string setup. The question of numerically controlled,
unstable dS is left open.
