The branch of this ticket is used in the Continuous Integration workflow of fflas-ffpack (for givaro/fflas-ffpack/linbox) - see
linbox-team/fflas-ffpack#331 (comment)

Depends on #29865
Depends on #32959

CC: @ClementPernet

Component: refactoring

Author: Matthias Koeppe

Branch/Commit: u/mkoeppe/modularization_of_sagelib__break_out_separate_package_sagemath_linbox @ 997a7ec

Issue created by migration from https://trac.sagemath.org/ticket/31444