qmk_firmware-mirror/docs/breaking_changes.md
James Young c66df16644
2020 November 28 Breaking Changes Update (#11053)
* Branch point for 2020 November 28 Breaking Change                                                

* Remove matrix_col_t to allow MATRIX_ROWS > 32 (#10183)                                           

* Add support for soft serial to ATmega32U2 (#10204)                                               

* Change MIDI velocity implementation to allow direct control of velocity value (#9940)            

* Add ability to build a subset of all keyboards based on platform.                                

* Actually use eeprom_driver_init().                                                               

* Make bootloader_jump weak for ChibiOS. (#10417)                                                  

* Joystick 16-bit support (#10439)                                                                 

* Per-encoder resolutions (#10259)                                                                 

* Share button state from mousekey to pointing_device (#10179)                                     

* Add hotfix for chibios keyboards not wake (#10088)                                               

* Add advanced/efficient RGB Matrix Indicators (#8564)                                             

* Naming change.                                                                                   

* Support for STM32 GPIOF,G,H,I,J,K (#10206)                                                       

* Add milc as a dependency and remove the installed milc (#10563)                                  

* ChibiOS upgrade: early init conversions (#10214)                                                 

* ChibiOS upgrade: configuration file migrator (#9952)                                             

* Haptic and solenoid cleanup (#9700)                                                              

* XD75 cleanup (#10524)                                                                            

* OLED display update interval support (#10388)                                                    

* Add definition based on currently-selected serial driver. (#10716)                               

* New feature: Retro Tapping per key (#10622)                                                      

* Allow for modification of output RGB values when using rgblight/rgb_matrix. (#10638)             

* Add housekeeping task callbacks so that keyboards/keymaps are capable of executing code for each main loop iteration. (#10530)

* Rescale both ChibiOS and AVR backlighting.                                                       

* Reduce Helix keyboard build variation (#8669)                                                    

* Minor change to behavior allowing display updates to continue between task ticks (#10750)        

* Some GPIO manipulations in matrix.c change to atomic. (#10491)                                   

* qmk cformat (#10767)                                                                             

* [Keyboard] Update the Speedo firmware for v3.0 (#10657)                                          

* Maartenwut/Maarten namechange to evyd13/Evy (#10274)                                             

* [quantum] combine repeated lines of code (#10837)                                                

* Add step sequencer feature (#9703)                                                               

* aeboards/ext65 refactor (#10820)                                                                 

* Refactor xelus/dawn60 for Rev2 later (#10584)                                                    

* add DEBUG_MATRIX_SCAN_RATE_ENABLE to common_features.mk (#10824)                                 

* [Core] Added `add_oneshot_mods` & `del_oneshot_mods` (#10549)                                    

* update chibios os usb for the otg driver (#8893)                                                 

* Remove HD44780 References, Part 4 (#10735)                                                       

* [Keyboard] Add Valor FRL TKL (+refactor) (#10512)                                                

* Fix cursor position bug in oled_write_raw functions (#10800)                                     

* Fixup version.h writing when using SKIP_VERSION=yes (#10972)                                     

* Allow for certain code in the codebase assuming length of string. (#10974)                       

* Add AT90USB support for serial.c (#10706)                                                        

* Auto shift: support repeats and early registration (#9826)                                       

* Rename ledmatrix.h to match .c file (#7949)                                                      

* Split RGB_MATRIX_ENABLE into _ENABLE and _DRIVER (#10231)                                        

* Split LED_MATRIX_ENABLE into _ENABLE and _DRIVER (#10840)                                        

* Merge point for 2020 Nov 28 Breaking Change
2020-11-28 12:02:18 -08:00

3.6 KiB

Breaking Changes

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.

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.

What has been included in past Breaking Changes?

When is the next Breaking Change?

The next Breaking Change is scheduled for February 27, 2021.

Important Dates

  • 2020 Nov 28 - develop is created. Each push to master is subsequently merged to develop
  • 2021 Jan 30 - develop closed to new PR's.
  • 2021 Jan 30 - Call for testers.
  • 2021 Feb 25 - master is locked, no PR's merged.
  • 2021 Feb 27 - Merge develop to master.
  • 2021 Feb 27 - master is unlocked. PR's can be merged again.

What changes will be included?

To see a list of breaking change candidates you can look at the breaking_change label. 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.

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.

Criteria for acceptance:

  • PR is complete and ready to merge
  • PR has a ChangeLog

Checklists

This section documents various processes we use when running the Breaking Changes process.

Creating the develop branch

This happens immediately after the previous develop branch is merged.

  • qmk_firmware git commands
    • git checkout master
    • git pull --ff-only
    • git checkout -b develop
    • Edit readme.md
      • Add a big notice at the top that this is a testing branch.
      • Include a link to this document
    • git commit -m 'Branch point for <DATE> Breaking Change'
    • git tag breakpoint_<YYYY>_<MM>_<DD>
    • git tag <next_version> # Prevent the breakpoint tag from confusing version incrementing
    • git push origin develop
    • git push --tags

4 Weeks Before Merge

  • develop is now closed to new PR's, only fixes for current PR's may be merged
  • Post call for testers

1 Week Before Merge

2 Days Before Merge

Day Of Merge

  • qmk_firmware git commands
    • git checkout develop
    • git pull --ff-only
    • git rebase origin/master
    • Edit readme.md
      • Remove the notes about develop
    • Roll up the ChangeLog into one file.
    • git commit -m 'Merge point for <DATE> Breaking Change'
    • git push origin develop
  • GitHub Actions
    • Create a PR for develop
    • Make sure travis comes back clean
    • Merge develop PR