depot/third_party/tvl/users/tazjin/homepage/feed.nix

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# Creates the Atom feed for my homepage.
{ depot, lib, pkgs, entry, pageEntries, ... }:
with depot.nix.yants;
let
inherit (builtins) map readFile sort;
inherit (lib) singleton;
inherit (pkgs) writeText;
inherit (depot.users.tazjin) atom-feed blog renderMarkdown;
postToEntry = defun [ blog.post atom-feed.entry ] (post: rec {
id = "https://tazj.in/blog/${post.key}";
title = post.title;
content = readFile (renderMarkdown post.content);
published = post.date;
updated = post.date; # TODO(tazjin): this should be distinct from published
links = singleton {
rel = "alternate";
href = id;
};
});
pageEntryToEntry = defun [ entry atom-feed.entry ] (e: {
id = "tazjin:${e.class}:${toString e.date}";
updated = e.date;
published = e.date;
title = e.title;
summary = e.description;
links = singleton {
rel = "alternate";
href = e.url;
};
});
allEntries = (map postToEntry blog.posts) ++ (map pageEntryToEntry pageEntries);
feed = {
id = "https://tazj.in/";
title = "tazjin's interblag";
subtitle = "my posts, projects and other interesting things";
# TODO(tazjin): Take the most recently updated entry time instead.
updated = builtins.currentTime;
rights = "© 2020 tazjin";
authors = [ "tazjin" ];
links = singleton {
rel = "self";
href = "https://tazjin/feed.atom";
};
entries = sort (a: b: a.published > b.published) allEntries;
};
in writeText "feed.atom" (atom-feed.renderFeed feed)