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SKILL verified MIT Self-run

Yocto Layer Review

skill-higangssh-yocto-agent-skills-yocto-layer-review · by Higangssh

Review Yocto/OpenEmbedded layer structure, layer.conf, BBFILE collections and patterns, LAYERSERIES_COMPAT, LAYERDEPENDS, BBFILE_PRIORITY, BBFILES_DYNAMIC, bbappend matching, overlayed recipes, provider selection, and layer compatibility. Use for layer creation, layer migration, layer review, or when a bbappend/recipe is not being applied.

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Install

$ agentstack add skill-higangssh-yocto-agent-skills-yocto-layer-review

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

Verified badge

Passed review? Show it. Paste this badge into your README, it links to the public security report.

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[![AgentStack Verified](https://agentstack.voostack.com/badges/verified.svg)](https://agentstack.voostack.com/security/report/skill-higangssh-yocto-agent-skills-yocto-layer-review)

Reliability & compatibility

✓ Security review passed
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Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

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About

Yocto Layer Review

Use this skill to review layers and diagnose metadata visibility problems. Layer issues often look like recipe, provider, or package failures; prove whether BitBake sees the metadata first.

Required Evidence

Ask for or inspect:

conf/layer.conf
conf/bblayers.conf
bitbake-layers show-layers
bitbake-layers show-recipes 
bitbake-layers show-appends
bitbake-layers show-overlayed

Layer Checklist

Review:

BBPATH .= ":${LAYERDIR}"
BBFILES += "${LAYERDIR}/recipes-*/*/*.bb ${LAYERDIR}/recipes-*/*/*.bbappend"
BBFILE_COLLECTIONS += "mylayer"
BBFILE_PATTERN_mylayer = "^${LAYERDIR}/"
BBFILE_PRIORITY_mylayer = "6"
LAYERSERIES_COMPAT_mylayer = "scarthgap walnascar"
LAYERDEPENDS_mylayer = "core"

Check:

  • collection name is unique and stable
  • LAYERSERIES_COMPAT_* matches the target release
  • required layers are declared with LAYERDEPENDS_*
  • recipe and append globs cover intended files
  • BBFILE_PRIORITY_* is not used to hide provider/version policy problems
  • optional bbappends use BBFILES_DYNAMIC when the target layer may be absent
  • .bbappend filename matches an existing recipe version or intentionally uses %

Common Problems

  • layer is present in the tree but missing from bblayers.conf
  • .bbappend silently not applied due to recipe version mismatch
  • collection name in BBFILES_DYNAMIC does not match target layer collection
  • layer priority causes a recipe to win unexpectedly
  • vendor BSP layer pins an older release and rejects modern syntax
  • dependency layer missing even though a recipe path exists locally

References

  • Read [../../references/shared/official-doc-map.md](../../references/shared/official-doc-map.md) for official layer docs.
  • Read [../../references/shared/yocto-field-guide.md](../../references/shared/yocto-field-guide.md) for layer and provider basics.
  • Read [../../references/yocto/migration.md](../../references/yocto/migration.md) for release compatibility checks.

Output

Answer with:

  1. whether BitBake sees the layer and append
  2. exact layer.conf or filename issue
  3. metadata visibility command to prove it
  4. minimal fix
  5. validation command

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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