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Branch overview

• cygwin/master auto-syncs with cygwin upstream
• For every cygwin release we have a branch named msys2-X_Y_Z-release which starts at the upstream release cygwin-X_Y_Z-release with our patches on top
• The current default branch is the one used for creating the pacman package and development happens there.

Branches:

• msys2-3_3_* is the last branch supporting Windows Vista, Windows Server 2008 and 32 bit

New changes to an existing release

• Commit to the current default branch
• Follow the instructions in the msys2-runtime packages to update the PKGBUILD etc.

Rebase on top of a new cygwin release

• Checkout out the upstream release tag git checkout cygwin-X_Y_Z-release
• Create a new branch git checkout -b msys2-X_Y_Z-release and push it
• Create a new branch git checkout -b msys2-X_Y_Z-release-wip
• Cherry pick the patches from the old release branch over git cherry-pick cygwin-A_B_C-release..msys2-A_B_C-release
• Try to clean up the history, merge patches etc to make the history clean and linear (makes future updates easier)
• Create a new PR for merging msys2-X_Y_Z-release-wip into msys2-X_Y_Z-release
• Include a range-diff in the PR description: git range-diff cygwin-A_B_C-release..msys2-A_B_C-release msys2-X_Y_Z-release..msys2-X_Y_Z-release-wip
• Merge the PR
• Make the new branch msys2-X_Y_Z-release the default branch
• Follow the instructions in the msys2-runtime packages to update the PKGBUILD etc.