{"slug":"run-nx-checks","title":"run-nx-checks","summary":"Run nx format, lint, test, and build on affected or specified projects, then fix unambiguous failures","platform":"Claude","tags":[],"authorName":"LLM Mart","authorSlug":"llm-mart","score":0,"source":"github","price":null,"verified":false,"createdAt":"2026-09-03T16:18:35.368153Z","repo":{"url":"https://github.com/eai-org/agent-toolkit","stars":55,"forks":11,"license":"MIT","updatedAt":"2026-09-25T10:11:49Z"},"bodyHtml":"
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name: run-nx-checks\ndescription: Run nx format, lint, test, and build on affected or specified projects, then fix unambiguous failures\ncontext: fork\nallowed-tools: Bash, Read, Edit, Write, Grep, Glob\nlicense: MIT\nmetadata:\nversion: \"1.7\"

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Run Nx Checks

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Run format, lint, test, build. Fix unambiguous failures. Report anything judgment-laden.

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Arguments

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$ARGUMENTS — optional, space-separated: [cpuCount] [projectName] [--remote-cache]. Number token\n→ cpuCount. Non-number, non-flag token → projectName. --remote-cache flag → opt back into the\nremote cache by dropping the remote-cache-off prefix. Default cpuCount = cores - 4 (min 1);\ncount cores with getconf _NPROCESSORS_ONLN (nproc is GNU-only).\nDefault project scope = affected. Default remote-cache state = off (see Steps).

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Workspace

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Run nx commands from wherever nx.json lives in this repo (commonly the root; in some repos a\nsubdirectory).

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Setup (before step 1)

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Keep the Nx daemon warm so the project graph is reused across targets:

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NX_DAEMON=true npx nx daemon --start >/dev/null 2>&1 || true\n
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Fix rule

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Affected scope — sanity-check before build/test

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Affected runs can balloon. Before steps 3–4, check scope with the graph-only\nnpx nx show projects --affected (fast, no build):

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Steps

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Scope is mandatory — never narrow it yourself. With no $projectName argument, every target\nruns at full scope — nx affected for lint/test/build, whole-changeset format:write. The\nsingle-project forms in the steps below apply only when the user explicitly passed\n$projectName. Never substitute nx run <proj>:<target>, nx <target> <changedLib>, or\nfile-scoped format --files for the affected sweep: that skips every other affected project —\nexactly where a shared-lib change regresses (a dependent project whose tests import the changed\nlib). And never add --skip-nx-cache (see below).

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Always prefix each nx command with both remote-cache-off env vars inline\n(NX_POWERPACK_CACHE_MODE=no-cache for Powerpack remote caches, NX_NO_CLOUD=true for Nx Cloud).\nThey're additive and the unrecognized one is a no-op, so this is safe regardless of which\nremote-cache backend (if any) the repo uses.

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The invariant: remote cache always off (unless the user passed --remote-cache), local cache\nalways on — always disable, never autodetect (a passing shell-side auth check doesn't predict the\nin-process credential chain). Why: remote-cache-rationale.md.

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If the user explicitly passed --remote-cache, drop both prefixes.

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Always keep the local cache on. The env vars above disable only the remote read-through cache;\nthe local Nx cache must stay enabled so unchanged targets are replayed instead of re-run. Do not\nadd --skip-nx-cache (nor NX_SKIP_NX_CACHE=true) to any command — it bypasses the local cache\ntoo, making every run slower for no benefit. The only valid reason to pass --skip-nx-cache is a\nspecific, stated need to bypass the local cache — e.g. investigating a failure you suspect is caused\nby a stale cache entry. In that case, scope it to the single command under investigation and say\nwhy; never use it as the default.

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Write both env vars literally at the start of each nx command, exactly as in the steps below. Do\nnot rely on export — each Bash tool call is a fresh shell, so exports do not carry across\ncalls (true for any nx env var). Never stash the prefix in a shell variable\n(NX_OFF=\"…\"; $NX_OFF npx nx … fails with \"command not found\": expanded variables are not parsed\nas assignments).

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    \n
  1. Lint — NX_POWERPACK_CACHE_MODE=no-cache NX_NO_CLOUD=true npx nx affected -t lint --parallel=$cpuCount --fix\n(or NX_POWERPACK_CACHE_MODE=no-cache NX_NO_CLOUD=true npx nx lint $projectName --fix).
    2. \n
  2. Format — NX_POWERPACK_CACHE_MODE=no-cache NX_NO_CLOUD=true npx nx format:write
    3. \n
  3. Test — NX_POWERPACK_CACHE_MODE=no-cache NX_NO_CLOUD=true npx nx affected -t test --parallel=$cpuCount --maxWorkers=1\n(or NX_POWERPACK_CACHE_MODE=no-cache NX_NO_CLOUD=true npx nx test $projectName).
    4. \n
  4. Build — NX_POWERPACK_CACHE_MODE=no-cache NX_NO_CLOUD=true npx nx affected -t build --parallel=$cpuCount\n(or NX_POWERPACK_CACHE_MODE=no-cache NX_NO_CLOUD=true npx nx build $projectName --parallel=$cpuCount).
    5. \n
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Apply the fix rule on any failure in steps 1–4.

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--maxWorkers=1 on the test step

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--parallel caps concurrent projects; each test task still fans out to ~all cores internally, so\nwithout this the cores oversubscribe (CPU pegs at 100%). --maxWorkers=1 pins each task to one\nworker → --parallel=$cpuCount ≈ $cpuCount cores. Both Vitest and Jest accept the flag.

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Same reason, --parallel is dropped from single-project lint and test (one task each — no\nfan-out). It stays on single-project build, because build has dependsOn: [\"^build\"], so\nbuilding one project fans out across its whole dependency chain.

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Flaky tests — retry once to classify

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A failed test target may be flaky, not a real break. On a test failure, re-run that one target\nonce: NX_POWERPACK_CACHE_MODE=no-cache NX_NO_CLOUD=true npx nx test <project>. If it then\npasses, or Nx prints NX detected a flaky task, it's flaky — don't try to \"fix\" it; record it as\na flaky project:target for the report. If it fails the same way again, treat it as real under\nthe Fix rule.

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Final report (mandatory)

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This skill runs in a forked context, so its final message is the only channel back to the caller.\nEnd by listing, per target (lint / format / test / build): clean, skipped (with the reason — for\nlarge fan-out, the project count and scope), or each failing project:target with its cause, plus\nany flaky project:target. Never report a bare \"checks passed\" — an unlisted failure or skipped\ntarget reads as green and the caller can't act on it.

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