#32942 fixed bootstrapping on Windows by having the core Spack
code explicitly add the Clingo package bin/ directory as a
DLL path.
Since then, #33400 has been merged, which ensures that the Python
module installed by the Spack `clingo` package can find the DLLs
in bin/.
Note that this only works for Spack instances which have been
bootstrapped after #33400: for installations bootstrapped before
then, you will need to run `spack clean -b` (this would only
be needed for Spack instances running on Windows).