Parallel prerequisites

Use case: speed up a pipeline by running independent prerequisites at the same time.

Demonstrates: parallelism · Guide: Attributes

Prerequisites: none

Run it

rune checks

Expected output

lint
test
typecheck
all checks passed

lint, test, and typecheck run concurrently (order between them may vary); checks runs once they all succeed. Concurrency is bounded by the available cores.

How it works

The [parallel] attribute on checks makes its independent dependencies run concurrently.