Document the big picture view of VCS and package loaders

---

Migrated from D5397 (view on Phabricator)

Build is green

Patch application report for D5397 (id=19316)

Rebasing onto 27e55115...

Current branch diff-target is up to date.

Changes applied before test

commit 2f4077a88ee4d2768d718ef54ad5aae1123f7f4e
Author: Valentin Lorentz <vlorentz@softwareheritage.org>
Date:   Thu Apr 1 11:42:17 2021 +0200

    Document the big picture view of VCS and package loaders

See https://jenkins.softwareheritage.org/job/DLDBASE/job/tests-on-diff/455/ for more details.

one small comment, otherwise, lgtm

Merge request was accepted

approved this merge request

+are

Merge request was merged

closed

Build is green

Patch application report for D5397 (id=19322)

Rebasing onto 27e55115...

Current branch diff-target is up to date.

Changes applied before test

commit ec5a76c6d90e693a25aa15fd66ae78f155e7a51c
Author: Valentin Lorentz <vlorentz@softwareheritage.org>
Date:   Thu Apr 1 11:42:17 2021 +0200

    Document the big picture view of VCS and package loaders

See https://jenkins.softwareheritage.org/job/DLDBASE/job/tests-on-diff/456/ for more details.