|Version 22 (modified by 12 years ago) ( diff ),|
Table of Contents
Sahana Eden has decided to move from Bzr/LaunchPad to Git/GitHub
- The current repository is huge & bloated, taking too long to download.
- Even simple changes take an age to Pull down to servers
- Web2py no longer supports Bzr/LaunchPad, so we want to be able to maintain a common tool to work with both repositories.
- New developers are likely to be more familiar with Git/GitHub
The preferred approach is to have a clean repository, in order to get the maximum benefit from the migration...although it is technically possible to migrate the commit history. Commit History will instead be maintained on the LaunchPad site as an archive
Fork a fresh Branch
- Sign-up for an account on GitHub
- So that you can contribute code back to the project you will need an SSH public key. There is on-line help at github (select Beginner - Set Up Git and then scroll down to Set Up SSH Keys)
- Fork the Eden Branch: https://github.com/flavour/eden/fork_select
- Use Git to clone this down to your PC:
cd web2py/applications git clone email@example.com:mygitusername/eden.git
Migrating existing Branches
Merge branch with trunk using normal Bzr tools
cd web2py/applications git clone firstname.lastname@example.org:flavour/eden.git <mybranch>2
.gitignorefrom <mybranch>2 to <mybranch>
- Delete the rest of <mybranch>2
[remote "origin"] fetch = +refs/heads/*:refs/remotes/origin/* url = email@example.com:<mygitusername>/<mybranch>.git
- Create the intiial repo for this new branch
cd <mybranch> git add . git commit -am "Initial Git version of My branch" git push -u origin master git remote add upstream git://github.com/flavour/eden.git
We suggest adopting the Story Branch pattern, which allows squashing commits in order to keep the main Trunk as clean as possible
cd <mybranch> # Update your working directory with latest code from Trunk git pull upstream master git checkout -b <mystory> git commit -am "My Story" # Quick review of code (no test code left in, etc) git diff master # Merge latest Trunk git checkout master git pull git checkout <mystory> git rebase master # Push to your branch on GitHub git checkout master git merge <mystory> git push # Cleanup git branch -d <mystory>
To resolve merge conflicts, you can create the .THIS & .OTHER files using:
git show :2:file.txt > file.txt.THIS git show :3:file.txt > file.txt.OTHER
Although on Windows this seems by default to produce UTF-16 files! ('UCS-2 Little Endian'). A script to make this process easier for Windows users is attached: merge.cmd
git config --global user.name "Your Name" git config --global user.email firstname.lastname@example.org git config --global github.user yourgithubusername git config --global github.token yourtoken git config --global core.editor "'C:/Program Files (x86)/Notepad++/notepad++.exe' -multiInst -notabbar -nosession -noPlugin" git config --global merge.tool diffmerge git config --global diff.tool diffmerge git config --global difftool.diffmerge.cmd 'C:/Program Files (x86)/Git/etc/wrappers/git-diff-diffmerge-wrapper.sh' "$LOCAL" "$REMOTE" git config --global difftool.prompt false git config --global merge.tool diffmerge git config --global mergetool.diffmerge.cmd 'C:/Program Files (x86)/Git/etc/wrappers/git-merge-diffmerge-wrapper.sh' "$PWD/$LOCAL" "$PWD/$BASE" "$PWD/$REMOTE" "$PWD/$MERGED" git config --global mergetool.prompt false git config --global mergetool.trustExitCode false git config --global mergetool.keepBackup false
version.py to update the
VERSION file on commit
Possibly we could add a pre-commit hook to run tests, e.g. based on http://tech.yipit.com/2011/11/16/183772396/ or http://blog.penzilla.net/2011/09/git-pre-commit-hook-for-python-now-with.html
How to get your work Merged into Trunk
- Make sure your work is fully tested.
- Tell git about any new files you've added. If you've added a new directory, you can just add the files in the directory and git will add the directory too. (Do "git help add" for a description of how to use the bzr add command.)
git add filename...
- Commit your changes -- this records them in your local git repository. Provide a message that describes what the change is for. If it fixes a bug, include the ticket number.
git commit -a -m "Describe your change here."
- It is really important, that the forked and the main eden repositorys are in sync here as we want to avoid merge-conflicts. To do that we need a branch of the eden master-repository:
* Make sure that you are in the Eden directory here! git remote add upstream https://github.com/flavour/eden.git git fetch upstream
- Now you have a branch of the original Eden repository. If you want to update your master-branch, you can fetch it again and merge both branches:
git fetch upstream git merge upstream/master
- Solve the conflicts if there were any
- Finally commit the merged version, push it to GitHub and send a Pull-Request on the GitHub site:
git status ... add missing files ... git commit -a -m "Some message" git push
Reverting to last committed code
If you want to throw away all uncommitted changes (i.e. '
bzr revert'), then:
git reset --hard HEAD