137 lines
		
	
	
		
			5.7 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			137 lines
		
	
	
		
			5.7 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
# Breaking Changes
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This document describes QMK's Breaking Change process. A Breaking Change is any change which modifies how QMK behaves in a way that in incompatible or potentially dangerous. We limit these changes so that users can have confidence that updating their QMK tree will not break their keymaps.
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This also includes any keyboard moves within the repository.
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The breaking change period is when we will merge PR's that change QMK in dangerous or unexpected ways. There is a built-in period of testing so we are confident that any problems caused are rare or unable to be predicted.
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## What has been included in past Breaking Changes?
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* [2022 May 28](ChangeLog/20220528.md)
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* [2022 Feb 26](ChangeLog/20220226.md)
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* [2021 Nov 27](ChangeLog/20211127.md)
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* [2021 Aug 28](ChangeLog/20210828.md)
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* [2021 May 29](ChangeLog/20210529.md)
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* [2021 Feb 27](ChangeLog/20210227.md)
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* [2020 Nov 28](ChangeLog/20201128.md)
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* [2020 Aug 29](ChangeLog/20200829.md)
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* [2020 May 30](ChangeLog/20200530.md)
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* [2020 Feb 29](ChangeLog/20200229.md)
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* [2019 Aug 30](ChangeLog/20190830.md)
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## When is the next Breaking Change?
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The next Breaking Change is scheduled for August 27, 2022.
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### Important Dates
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* [x] 2022 May 28 - `develop` is tagged with a new release version. Each push to `master` is subsequently merged to `develop` by GitHub actions.
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* [ ] 2022 Jul 31 - `develop` closed to new PR's.
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* [ ] 2022 Jul 31 - Call for testers.
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* [ ] 2022 Aug 13 - Last day for merges -- after this point `develop` is locked for testing and accepts only bugfixes
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* [ ] 2022 Aug 25 - `master` is locked, no PR's merged.
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* [ ] 2022 Aug 27 - Merge `develop` to `master`.
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* [ ] 2022 Aug 27 - `master` is unlocked. PR's can be merged again.
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## What changes will be included?
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To see a list of breaking change candidates you can look at the [`breaking_change` label](https://github.com/qmk/qmk_firmware/pulls?q=is%3Aopen+label%3Abreaking_change+is%3Apr). New changes might be added between now and when `develop` is closed, and a PR with that label applied is not guaranteed to be merged.
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If you want your breaking change to be included in this round you need to create a PR with the `breaking_change` label and have it accepted before `develop` closes. After `develop` closes no new breaking changes will be accepted.
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Criteria for acceptance:
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* The PR is complete and ready to merge
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* The PR has a ChangeLog file describing the changes under `<qmk_firmware>/docs/Changelog/20220827`.
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    * This should be in Markdown format, with a name in the format `PR12345.md`, substituting the digits for your PR's ID.
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    * One strong recommendation that the ChangeLog document matches the PR description on GitHub, so as to ensure traceability.
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## Checklists
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This section documents various processes we use when running the Breaking Changes process.
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### 4 Weeks Before Merge
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* `develop` is now closed to new PR's, only fixes for current PR's may be merged
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* Post call for testers
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    * [ ] Discord
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    * [ ] GitHub PR
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    * [ ] https://reddit.com/r/olkb
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### 2 Weeks Before Merge
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* `develop` is now closed to existing PR merges, only bugfixes for previous merges may be included
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* Post call for testers
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    * [ ] Discord
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    * [ ] GitHub PR
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    * [ ] https://reddit.com/r/olkb
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### 1 Week Before Merge
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* Announce that master will be closed from <2 Days Before> to <Day of Merge>
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    * [ ] Discord
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    * [ ] GitHub PR
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    * [ ] https://reddit.com/r/olkb
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### 2 Days Before Merge
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* Announce that master is closed for 2 days
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    * [ ] Discord
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    * [ ] GitHub PR
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    * [ ] https://reddit.com/r/olkb
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### Day Of Merge
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* `qmk_firmware` git commands
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    * [ ] `git checkout develop`
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    * [ ] `git pull --ff-only`
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    * [ ] Edit `readme.md`
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        * [ ] Remove the notes about `develop`
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    * [ ] Roll up the ChangeLog into one file.
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    * [ ] `git commit -m 'Merge point for <DATE> Breaking Change'`
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    * [ ] `git push upstream develop`
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* GitHub Actions
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    * [ ] Create a PR for `develop`
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    * [ ] **Turn off 'Automatically delete head branches' for the repository** -- confirm with @qmk/directors that it is done before continuing
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* `qmk_firmware` git commands
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    * [ ] `git checkout master`
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    * [ ] `git pull --ff-only`
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    * [ ] `git merge --no-ff develop`
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    * [ ] `git tag <next_version>` # Prevent the breakpoint tag from confusing version incrementing
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    * [ ] `git push upstream <next_version>`
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    * [ ] `git push upstream master`
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## Post-merge operations
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### Updating the `develop` branch
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This happens immediately after the previous `develop` branch is merged to `master`.
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* `qmk_firmware` git commands
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    * [ ] `git checkout master`
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    * [ ] `git pull --ff-only`
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    * [ ] `git checkout develop`
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    * [ ] `git pull --ff-only`
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    * [ ] `git merge --no-ff master`
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    * [ ] Edit `readme.md`
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        * [ ] Add a big notice at the top that this is a testing branch.
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        * [ ] Include a link to this document
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    * [ ] `git commit -m 'Branch point for <DATE> Breaking Change'`
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    * [ ] `git tag breakpoint_<YYYY>_<MM>_<DD>`
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    * [ ] `git push upstream breakpoint_<YYYY>_<MM>_<DD>`
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* All submodules under `lib` now need to be checked against their QMK-based forks:
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    * [ ] `git submodule foreach git log -n1`
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    * [ ] Validate each submodule SHA1 matches the qmk fork, e.g. for ChibiOS:
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        * Go to [qmk/ChibiOS](https://github.com/qmk/ChibiOS)
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        * Compare the commit hash in the above output to the commit hash in the repository
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        * If there's a mismatch:
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            * [ ] `cd lib/chibios`
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            * [ ] `git fetch --all`
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            * [ ] `git checkout master`
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            * [ ] `git reset --hard <commit hash>`
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            * [ ] `git push origin master --force-with-lease`
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* (Optional) [update ChibiOS + ChibiOS-Contrib on `develop`](chibios_upgrade_instructions.md)
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