Only depend on Free Software packages which exist in the "main"
section of Debian "stable" distribution. That is Debian 9.x
("stretch") as of this writing, but "oldstable" (8.x, "jessie")
-remains supported for v1 repositories.
+remains supported for v1 inboxes.
In general, we favor mature and well-tested old things rather than
the shiny new.
See design_www.txt and design_notes.txt in the Documentation/
directory for design decisions made during development.
+See Documentation/technical/ in the source tree for more details
+on specific topics, in particular data_structures.txt
+
Perl notes
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