python3-cysignals-bare - 1.8.1+ds-2 main

Since Cython optimizes for speed, Cython normally does not check
for interrupts. The cysignals package provides mechanisms to handle
interrupts (and other signals and errors) in Cython code.
.
This package installs the library for Python 3; this very library
was not built against the PARI/GP library.