CI Overview

The CI system builds Yocto images for all supported machines, runs integration tests, mirrors release tags, and publishes artifacts to S3. All behavior is driven from a single source of truth — .github/machines.json — from which most workflow files are generated.

Workflow Map

TAG PUSH  (0*  or  *-rc*)
  tag-scarthgap.yaml
    ├── sync     → sync-pantavisor.yaml       mirror tag to pantavisor/pantavisor
    └── release  → release.yaml (after sync)
                    ├── build × N machines    → buildkas-upload.yaml  (kas build + S3 upload)
                    ├── pvtest-local          → call-pvtests.yaml
                    ├── pvtest-remote         → call-pvtests.yaml     (after local)
                    └── summary                 upload per-machine badges to S3

  tag-changelogs.yaml  (workflow_run, fires after tag-scarthgap completes)
    └── changelog       render CHANGELOG-NNN.md, update GitHub Release, open PR to master


ON PUSH  (master)
  onpush-scarthgap.yaml
    └── build × onpush machines  → buildkas-target.yaml  (kas build, artifacts only)


MANUAL  (workflow_dispatch)
  manual-scarthgap.yaml
    └── build × all manual machines  → buildkas-target.yaml

  manual-pvtests.yaml
    ├── build docker-x86_64-scarthgap  → buildkas-target.yaml
    └── start-pvtest                   → call-pvtests.yaml


SCHEDULED
  schedule-pvtests.yaml       daily 02:00
    ├── build docker-x86_64-scarthgap  → buildkas-target.yaml
    ├── local                          → call-pvtests.yaml
    └── remote                         → call-pvtests.yaml  (after local)

  schedule-updates.yaml       every 8 h
    └── check-and-update   bump SRCREVs via update-components.sh, open PR if changed

  schedule-updatemachines.yaml  every 8 h + 15 min
    └── updaterelease      run makemachines + makeworkflows, open PR if changed

Workflow Files

File	Trigger	Role
tag-scarthgap.yaml	tag push	Orchestrator: sync → release
release.yaml	workflow_call	Build matrix + pvtests + badge upload
tag-changelogs.yaml	workflow_run after tag-scarthgap	Changelog generation and GitHub Release
sync-pantavisor.yaml	workflow_call	Mirror tag to pantavisor/pantavisor
onpush-scarthgap.yaml	push to master	Build matrix for onpush machines
manual-scarthgap.yaml	workflow_dispatch	Build any machine on demand
manual-pvtests.yaml	workflow_dispatch	Build + run pvtests on demand
schedule-pvtests.yaml	cron daily 02:00	Nightly build + full pvtest run
schedule-updates.yaml	cron every 8 h	SRCREV bump PRs
schedule-updatemachines.yaml	cron every 8 h + 15 min	kas config + workflow regen PRs
buildkas-upload.yaml	workflow_call	Reusable: build + S3 upload (tag builds)
buildkas-target.yaml	workflow_call	Reusable: build + GitHub artifacts (dev builds)
call-pvtests.yaml	workflow_call	Reusable: run pvtests suite

Scripts

Script	Purpose
makemachines	Flatten KAS config fragments into kas/build-configs/release/*.yaml
makeworkflows	Regenerate onpush-*, manual-*, and release.yaml from machines.json
make-tag-matrix.py	Generate release.yaml (build matrix + pvtests + summary)
make-onpush-matrix.py	Generate onpush-scarthgap.yaml
make-manual-dispatch.py	Generate manual-scarthgap.yaml
makecommit	Audit layer changes and draft PR description
update-components.sh	Fetch latest SRCREVs for tracked components
upload.sh	Push build artifacts and update releases.json on S3
upload-badges	Write per-machine badge JSON to S3 after a tag build
sync-pantavisor-tag.sh	Push the tag to pantavisor/pantavisor via PAT
make-changelog.sh	Render a CHANGELOG section for a given tag
update-readme-board.py	Regenerate the workflow status table in docs/ci/status.md

Runners and Container

All builds run on self-hosted runners inside the ghcr.io/pantacor/kas/kas:next-v7 container. Shared sstate-cache and download directories are mounted at /shared/sstate and /shared/dldir to speed up incremental builds. Summary and badge jobs run on GitHub-hosted ubuntu-latest.

Related docs

• machines.md — machines.json schema, adding boards, workflow generation
• builds.md — build engines, artifact types, S3 layout, pvtests
• changelog.md — changelog generator and release notes
• tag-sync.md — tag mirror to pantavisor/pantavisor
• status.md — live CI status badges