As explained in debian/README.Debian, Debian distributes `cysignals' Cython
package in different flavours; two flavours exactly at the time of writing,
`bare' and `pari'. Unfortunately, at the time of packaging, only the `bare'
flavour can be supported in Debian because the involved PARI/GP material
required for the `pari' flavour is not supported in Debian. Nevertheless,
for development purposes, a Build-Profiles profile [1] has been implemented
for the `pari' flavour.

This approach allows us (the Debian Sage[Math] Team) to expose the cysignals
Debian package to the unstable and testing distributions and to step forward
in the packaging of Sage [2].

[1] https://wiki.debian.org/BuildProfileSpec
[2] https://wiki.debian.org/DebianScience/Sage

 -- Jerome Benoit <calculus@rezozer.net>  Mon, 03 Oct 2016 00:30:39 +0000
