Running tasks

vx run build runs build in the package you are in, and what it depends on. From the root, say which packages:

vx run build --all                     # every package that has build
vx run build --filter "@app/*"         # packages whose name matches
vx run build --filter "...@app/ui"     # a package and everything that depends on it
vx run test --affected                 # changed since the base branch, and dependents
vx run test --affected=origin/main     # changed since that ref
vx run app#build api#test              # exact tasks, from anywhere
vx run lint test build --all           # several tasks, one graph
vx run test --all -- --bail            # the child runs: bun test --bail; the key sees it
vx run build --all --dry               # the plan, nothing runs
vx watch test --all                    # re-run whenever its files change

--dry prints what would run and where each result would come from:

would run:
  ✓  @acme/api#build  cache hit (local)         8625b603
  ✓  @acme/ui#build   cache hit (local)         71e5d9a0
  ✓  @acme/web#build  cache hit (local)         42e9b39d

3 task(s) planned, 3 cache hits (3 local).

Flag	Does
--no-cache	ignore the cache: no reads, no writes
--force	run everything; save only what the cache lacks
--concurrency <n>	at most n tasks at once (default: the cores you may use)
--continue	keep going after a failure (modes)
--output-logs <m>	full, errors-only, hash-only or none

A bare --affected compares with the merge base off your base branch; VX_AFFECTED_BASE names another commit. Every flag: CLI.

See vx run for every flag, and Guides for common runs.