The pacman configuration says nothing about debug symbol packages. Someone who
wants `glibc-debug` so that gdb or Valgrind has symbols to work with has to
discover on their own that Arch publishes `-debug` repositories, find a mirror
that serves them, and work out that the versions only line up while the system
tracks Arch current.
Appending the three repository sections to `pacman-edge.conf`, commented out,
will put them within reach without turning them on. The comment records that the
packages match the edge channel only, and that debuginfod already covers most
debugging on edge, so enabling them is often unnecessary. Only the edge template
gets them, because on stable and rc the upstream debug packages are newer than
the pinned packages they would need to match.
ref: https://github.com/basecamp/omarchy/discussions/6185
