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Publish an Activity RSS feed at /activity/feed.xml #280
Description
Activity
Feed rules (decided 2026-09-29). These are hard to change once people subscribe.
- One item per row of Compute the Activity rows at build time, with tests #276's view: the newest 50 rows.
- Item ID: the row ID from Compute the Activity rows at build time, with tests #276 (its grouping key: date, type, and series or release group), as a
tag:URI withisPermaLink="false". It must not change once published. - Titles start with the row's type word, e.g. "Release: QuantEcon.py v0.12.0";
bookrows read "Book update: …". - Dates: 12:00 UTC on the entry's date. Don't use
date_to_rfc822: the site runs on Sydney time, so it would shift every entry back a day. - Launch after the replay of the paused days, so replayed entries don't reach subscribers as a burst of new items.
- The PR description says "Related to News and Activity: announcements on News and a self-updating Activity feed #271", since this issue is deliberately unparented.
Unblocked (2026-10-01). The replayed days are published: #293 added the feed's first lecture entry (2026-09-29), so launching the feed won't announce the paused days as a burst of new items. The rail is live (#291), so the PR for this issue adds the rail's "Activity feed" link (
bi-rss) after "View all activity", as #291's notes say.One thing to settle when planning: the June to September backfill (QuantEcon/reports-activity#91) will later add older rows. Feed readers would show them as new, unread items. Either launch after the backfill, or accept that.
Follows the Activity RSS feed decision in #266. Related to #271, but not one of its work items.
Why. Decided in #266: a second feed for Activity. It gives one subscription covering every library release and lecture update, which GitHub's per-repository release feeds don't.
/feed.xmlstays News-only.Work.
pages/activity-feed.xml(layout: null,permalink: /activity/feed.xml,sitemap: false), built from Compute the Activity rows at build time, with tests #276's rows:/feed.xml;guidbuilt from date, type and project, since lecture URLs repeat;/activity/.<link rel="alternate" type="application/rss+xml">for both feeds in_layouts/default.html.Acceptance criteria
/activity/feed.xmlvalidates with the W3C feed validator./activity/./feed.xmlis unchanged.<head>.