tui-console

TUI Console

DAGGER_TUI_CONSOLE=<addr> makes any dagger command serve its live pretty TUI over HTTP on a headless terminal instead of attaching to a real one. You drive the real frontendPretty (and the command's real work) with curl instead of keystrokes, so what you see is exactly what a user sees at a tty.

Use it to operate the interactive TUI by hand — explore how a run/trace renders, reproduce a rendering bug, expand a check/test to see its detail, or step through navigation — when you don't have (or don't want) a pty.

Complementary to tui-qa: that skill records a real pty session (asciinema) for timing/hang/"what the user saw at time T" analysis; this one interactively drives the live UI. Reach for tui-qa for timing and redraw behavior, this for navigating and inspecting state.

This is a dev/debug affordance: off by default, bound to the address you give (use localhost).

Enable it

Prefix any dagger command with DAGGER_TUI_CONSOLE=:<port>. It's orthogonal to what the command does or where its data comes from — it only changes how the TUI is presented. From a dagger checkout, run the dev binary in the background and wait for it to come up:

# any command works: call, check, a trace, ...
env DAGGER_TUI_CONSOLE=:7777 go run ./cmd/dagger call test &

# poll until ready:
for i in $(seq 1 60); do
  curl -s -o /dev/null -w '%{http_code}' localhost:7777/help | grep -q 200 && break
  sleep 2
done

(An installed dagger binary works the same: DAGGER_TUI_CONSOLE=:7777 dagger ….)

Drive it

All endpoints return text/plain; screens are ANSI-stripped (add ?raw=1 to keep color).

curl -s localhost:7777/screen                  # current frame
curl -s --data 'right'     localhost:7777/key  # expand the focused span
curl -s --data 'down down' localhost:7777/key  # navigate (keys: tuist.ParseKey names)
curl -s --data 'TestFoo'   localhost:7777/type # type a literal string (e.g. into / search)
curl -s 'localhost:7777/spans?q=TestFoo'       # list loaded spans matching a name
curl -s --data '<spanHex>' localhost:7777/zoom # jump straight to a span
curl -s --data '120x12'    localhost:7777/resize # resize the terminal (cols x rows)
curl -s localhost:7777/help                    # endpoints + keymap

State accumulates across requests like a real session. Each request settles briefly so background lazy fetches land; if a screen still looks mid-load, just GET /screen again.

The screen is viewport-clipped to the current terminal size, exactly like a real tty: when the rendered frame is taller than rows, only the bottom rows lines are shown and the top scrolls offscreen (tuist's alt-screen behaviour). So /resize to a small height is how you reproduce overflow-only rendering bugs — e.g. a focused row whose own promoted tests/logs are taller than the viewport, pushing its own header off the top. Either dimension may be 0/omitted to keep the current value (x12 changes only rows).

Keymap (for /key)

←↑↓→ / h j k l move · right/l expand · left/h collapse · enter zoom · esc back out · r jump to error origin · L logs · +/- verbosity · / search · T tests view. A down*3 token repeats a key; commas or spaces separate keys ("down,down,right").

To type into the search field, open it with / then POST the query to /type (which is not tokenized — spaces are typed verbatim), then submit with enter:

curl -s --data '/'           localhost:7777/key
curl -s --data 'TestFoo'     localhost:7777/type
curl -s --data 'enter'       localhost:7777/key   # jump to the match

Typical flow: find a failure and inspect it

The /spans status column is ERROR when the span itself errored and FAIL when it only caused a failure via a link (a test/check whose error rides on a descendant or linked span), so match both:

SID=$(curl -s 'localhost:7777/spans?q=TestThatFailed' | grep -E 'ERROR|FAIL' | head -1 | awk '{print $1}')
curl -s --data "$SID" localhost:7777/zoom
curl -s --data 'right' localhost:7777/key      # expand for logs/detail

Cleanup

Stop the background command (Ctrl-C / kill) when done — the console shuts down gracefully on signal.

Notes

• Command requirements are unchanged. The console doesn't add any. dagger trace <id> still needs Cloud access (run dagger login, or point elsewhere with DAGGER_CLOUD_URL); call/check still run locally. The console is just the presentation layer.
• Screens default to 120x40; verbosity is driven by the +/- keys.
• Implementation: dagql/idtui/frontend_console.go (runWithConsole + the HTTP handlers); forced on regardless of tty in internal/cmd/dagger/main.go.
• The deterministic counterpart for CI is the in-memory traceSession smoke test (dagql/idtui/trace_session_test.go), which asserts lazy-fetch behavior without a network or HTTP.