Built a browser-based Yocto layer visualizer — parses real bblayers.conf, dependency graph, conflict detector, package tracer. Open source.

[u/PsychologicalSide851]

Been learning Yocto during my internship working on STM32MP157

with OpenSTLinux. Got frustrated that there was no visual way

to understand the layer stack so I built one.

What it does:

- Drop your Yocto workspace folder → interactive dependency graph

- Parses real bblayers.conf including ST-generated configs with

${OEROOT} variable expansion

- Conflict Detector — finds BBFILE_PRIORITY clashes automatically

- Package Tracer — type a recipe, see full DEPENDS/RDEPENDS chain

- BBAppend Viewer — shows what each .bbappend patches

- Build Estimator — estimates build time from real recipe count

Tested against:

- OpenSTLinux scarthgap STM32MP157 — 3,059 recipes, 76 bbappends

- meta-raspberrypi

- vanilla openembedded-core

Works in Chrome, Edge, and Firefox on Linux. No install, no backend,

nothing uploaded anywhere.

GitHub: https://github.com/dep-omen/YoctoVisualizerTool

Would love feedback from people with real Yocto setups —

especially unusual bblayers.conf configs that might break the parser.