typo3-core-contributions

TYPO3 Core Contributions

Guide for contributing to TYPO3 Core: Forge issues, Gerrit patches, CI debugging, and review workflows.

When to Use

• Forge issue analysis or creation (forge.typo3.org/issues/*)
• Patch submission, CI debugging, Gerrit review workflow
• Commit message formatting, cherry-picks, rebasing

Prerequisites

Run ${CLAUDE_SKILL_DIR}/scripts/verify-prerequisites.sh to check: TYPO3.org account, Gerrit SSH (ssh -p 29418 <user>@review.typo3.org), Git email matching Gerrit. See references/account-setup.md.

Workflow

1. Setup: Account + environment (${CLAUDE_SKILL_DIR}/scripts/setup-typo3-coredev.sh, references/ddev-setup-workflow.md)
2. Branch: git checkout -b feature/<issue>-description
3. Analyze: Understand root cause, reproduction steps, affected versions before coding
4. Develop: Implement fix + tests, validate with typo3-conformance-skill
5. Commit: Follow format below, include Resolves: #<issue> + Releases:
6. Push: git push origin HEAD:refs/for/main (starts as WIP)
7. CI: Wait for all jobs. Read actual GitLab logs at git.typo3.org/typo3/CI/cms/-/jobs/<id>. Fix ALL failures in one amend+push
8. Ready: Mark ready via git push origin HEAD:refs/for/main%ready or Gerrit UI "Start Review"
9. Review: Address feedback, amend commit, preserve Change-Id. Fetch reviewer's patchset first to preserve their message edits: git fetch origin refs/changes/XX/NNNNN/N && git reset --soft FETCH_HEAD
10. Update: git commit --amend && git push origin HEAD:refs/for/main

Commit Format

[TYPE] Subject (imperative mood, max 52 chars)

How and why (not what). Wrap at 72 chars.

Resolves: #12345
Releases: main, 13.4, 12.4

Types: [BUGFIX], [FEATURE] (main only), [TASK], [DOCS], [SECURITY] Breaking: [!!!][TYPE] prefix, Releases: main only Required: Every commit MUST have Resolves: (not just Related:)

CI Debugging

Read ALL failing job logs (never guess). Common jobs: cgl pre-merge (code style), phpstan (static analysis), unit/functional (tests). Fix all in one patchset. Local checks:

./Build/Scripts/runTests.sh -s unit && ./Build/Scripts/runTests.sh -s functional
./Build/Scripts/cglFixMyCommit.sh
./Build/Scripts/runTests.sh -s phpstan

Key Operations

Task	Command
Push to Gerrit	git push origin HEAD:refs/for/main
Mark ready	git push origin HEAD:refs/for/main%ready
Set WIP	git push origin HEAD:refs/for/main%wip
Rebase	git fetch origin && git rebase origin/main
Cherry-pick patch	git fetch origin refs/changes/XX/NNNNN/N && git cherry-pick FETCH_HEAD
Install hook	cp Build/git-hooks/commit-msg .git/hooks/ && chmod +x .git/hooks/commit-msg
Fix email mismatch	GIT_COMMITTER_EMAIL="registered@email" git commit --amend --no-edit
Forge API	${CLAUDE_SKILL_DIR}/scripts/create-forge-issue.sh, references/forge-api.md

References

Topic	File
Account setup	references/account-setup.md
Commit format	references/commit-message-format.md
Gerrit workflow	references/gerrit-workflow.md
Review patterns	references/gerrit-review-patterns.md
Modern patterns	references/modern-typo3-patterns.md
DDEV setup	references/ddev-setup-workflow.md
Forge API	references/forge-api.md
Commit hook	references/commit-msg-hook.md
Troubleshooting	references/troubleshooting.md

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Credits & Attribution

This skill is based on the excellent work by Netresearch DTT GmbH.

Original repository: https://github.com/netresearch/typo3-core-contributions-skill

Copyright (c) Netresearch DTT GmbH — Methodology and best practices (MIT / CC-BY-SA-4.0)

Special thanks to Netresearch DTT GmbH for their generous open-source contributions to the TYPO3 community, which helped shape this skill collection. Adapted by webconsulting.at for this skill collection