Yocto layer review

Skill Higangssh/yocto-agent-skills/skills/yocto-layer-review

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.From its SKILL.md

Install

npx -y skills add Higangssh/yocto-agent-skills --skill yocto-layer-review

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

6 stars6 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

SKILL.md

2.4 KB, as published. Nobody here has run it

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 <recipe>
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 wrynose"
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/official-doc-map.md for official layer docs.
Read references/yocto-field-guide.md for layer and provider basics.
Read references/migration.md for release compatibility checks.

Output

Answer with:

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

What ships with it: 3 files

22.3 KB alongside SKILL.md

references/

Gives 0 of the 12 instructions most review quality skills give

Counted across 1,273 of the 2,403 authors here whose files we hold, read 2026-09-06

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Said here and by no other author read

Verify layer presence in bblayers.conf
Check LAYERSERIES_COMPAT matches target release
Validate LAYERDEPENDS declarations
Confirm BBFILES globs cover intended files
Use BBFILES_DYNAMIC for optional bbappends
Ensure bbappend filenames match recipe versions

Grouped from the skills themselves: near-identical wordings counted once, and counted by distinct author, so one author publishing three of these counts once.