When trying to build Sage on a very bare fedora install (e.g. a Docker container) the packages listed in the build instructions at:

https://doc.sagemath.org/html/en/installation/source.html#linux-prerequisite-installation

are insufficient. At the very least it also needs findutils and which, and currently it also requires python2, though that should be fixed as part of #26953. The need for which comes, at the very least, from MPIR's configure script, which uses which at least on Linux.

With #29053, the necessary distribution packages for an installation are cataloged in build/pkgs/fedora.txt, build/pkgs/SPKG/distros/fedora.txt and similar for other distributions.

In this ticket, we add to bootstrap some code to keep the yum (and apt-get for debian) command-lines in the installation manual up to date. #29053 prepared this by isolating these command lines in separate .txt files in src/doc.

CC: @dimpase @embray @jhpalmieri

Component: documentation

Author: Matthias Koeppe

Branch: 688c68e

Reviewer: John Palmieri, Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/26964