Clicking an event shows everything it holds -- which is a lot more than v1 ever showed, because v1's wire format flattened attendees and categories to comma-separated strings and dropped the rest of the RFC on the way out. Here the whole VEvent arrives intact, so the panel shows all of it, and only the parts that are there: a panel of empty rows is a panel nobody reads. That meant saying RFC 5545 out loud. FREQ=MONTHLY;BYDAY=1MO and TRIGGER;RELATED=END:-PT1H are exact and unreadable, so there is a module that turns them into English -- and it says only what it can say. A rule with a part it does not understand comes back as the rule itself rather than as a confident sentence with the deciding half missing; paraphrasing BYSETPOS into silence would misdescribe when somebody's meeting actually happens, which is the same move as v1's title-matching deduplicator. Right-clicking an event or a day opens a menu, positioned by arithmetic on sizes the stylesheet guarantees rather than by rendering it and measuring -- measuring means a frame in the wrong place and imperative DOM surgery inside a declarative framework, which is how v1's print preview reached 617 lines. The tokens it reads are registered with @property so their computed values come back as lengths; an ordinary custom property reads as the string "13rem", which is not a number. The menus offer what exists: open the details, go to that day, that week, that month. Editing, duplicating and deleting arrive with the milestones that build them. An item that greys itself out is a promise the interface cannot keep, and v1 shipped a recurrence form full of fields that reached no API. What is open lives in one place, offered through context rather than passed down: the thing that opens a menu is a chip several components deep, and the ones in between have no business carrying a callback they never call.
Runway
Passive infrastructure for life's coordination.
A CalDAV web client in Rust — Leptos/WASM frontend, Axum backend, speaking to any RFC-compliant CalDAV server (developed against Baikal).
This is a ground-up rewrite. Its predecessor lives in ../calendar; the reasons it was replaced,
and the feature-by-feature decisions that shaped this one, are recorded in
docs/legacy-audit.md — that document is the spec.
Layout
| Crate | Role |
|---|---|
runway-core |
RFC 5545 model, iCalendar round-trip, recurrence expansion. Pure, no I/O. |
runway-caldav |
CalDAV client: discovery, time-ranged queries, ETag-aware CRUD. |
runway-server |
Axum backend: CalDAV proxy, sessions, preferences, ICS feeds. |
runway-web |
Leptos CSR frontend. |
runway-cli |
Smoke tool for exercising a real CalDAV server from the terminal. |
runway-core is feature-gated (model / ical / recurrence) so the frontend gets the shared
types without pulling the parser and RRULE engine into the WASM bundle.
Development
The toolchain is pinned in rust-toolchain.toml and installs automatically on first use.
cargo check --workspace
cargo test --workspace
cargo clippy --workspace -- -D warnings
The CalDAV integration tests need a server and are skipped without one. This starts a throwaway Baikal in a container, installs it, runs them against it, and tears it down:
crates/runway-caldav/tests/baikal/run.sh
Running the backend needs an encryption key for stored CalDAV credentials. It must stay the same across restarts — a key invented at startup would silently make every saved credential unreadable — so the server refuses to start without one rather than generating a throwaway:
export RUNWAY_SECRET_KEY=$(cargo run -q -p runway-server -- genkey)
export RUNWAY_DATABASE_URL=sqlite:runway.db # default
export RUNWAY_BIND=0.0.0.0:3000 # default
export RUNWAY_INSECURE_COOKIES=1 # local HTTP only
cargo run -p runway-server
Frontend
npm install # Tailwind v4 and the browser tooling
cd crates/runway-web && trunk serve
Trunk serves on :8080 and proxies /api to the backend on :3000, so the
session cookie is same-origin in development exactly as in production — nothing
has to be weakened to make local work.
The whole stack, for looking at — a throwaway Baikal seeded with a week of events, the backend, and the frontend:
npx playwright install chromium # once
e2e/dev.sh up # → http://127.0.0.1:8080, testuser/testpassword
HOST=0.0.0.0 e2e/dev.sh up # ...and reachable from another machine
e2e/dev.sh shoot # screenshots + anything the console said
e2e/dev.sh down
Only the frontend binds to HOST; the backend stays on the loopback, because
Trunk proxies /api to it from the server side. HOST=0.0.0.0 is for looking
at the app from another machine on a network you trust — the dev stack runs with
RUNWAY_INSECURE_COOKIES=1 and a throwaway calendar server.
Driving a real browser is the loop v1 never had, and the reason its week grid
could only be checked by building, deploying and squinting. shoot.mjs also
asserts: that hiding a calendar removes its events, and that every preference
survives a reload.
Some tests can be pointed at a whole real calendar rather than the committed fixtures:
RUNWAY_TEST_FEED_FILE=/path/to/calendar.ics cargo test -p runway-server --test feeds
The CLI drives the same stack the app does, which makes it the quickest way to tell a display bug from a data one:
export RUNWAY_CALDAV_URL=https://example.com/dav.php/
export RUNWAY_CALDAV_USER=you
export RUNWAY_CALDAV_PASSWORD=... # from the environment, not a flag
cargo run -p runway-cli -- calendars
cargo run -p runway-cli -- list-events --from 2026-08-24 --to 2026-08-31
Principles
Carried over from the audit, and enforced by lints and CI rather than by good intentions:
- One representation of an event.
VEventis the model and the wire format. No parallel DTOs. - Use the library. Recurrence is
rrule, iCalendar isicalendar, XML isquick-xml. - Fix the parse, not the output. Never post-process data to paper over a bad parse.
- State lives where it's owned. No localStorage-as-global, no prop-drilling megacomponents.
- Test thoroughly. Real servers over mocks; the router under test is the router that ships.