Difference between revisions of "Activity Team/Git FAQ"

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== Git and Gitorious FAQs ==
+
<noinclude>{{TeamHeader|Activity Team}}</noinclude>
 +
: '''[[Talk:Activity Team/Git FAQ | Post new questions here]]'''.
 +
==Using GitHub (github.com)==
 +
=== Help! I suddenly can't connect to GitHub! ===
 +
:Please contact to [https://github.com/contact GitHub support], or look at [https://help.github.com/ GitHub FAQ]
  
=== How do I create an account on git.sugarlabs.org? ===
+
=== How do I create an account on github.com? ===
  
[http://git.sugarlabs.org/users/new Register] using the link on the upper right menu on the Home Page.
+
:[http://github.com/join Join] using the link on the upper right menu on the Home Page.
  
===How do I migrate a project to git.sugarlabs.org? ===
+
===How do I migrate a project to GitHub? ===
  
Please follow the [[ActivityTeam/How_to_migrate_from_OLPC|instructions here]] to first set up your project's entry in Gitorious.
+
:Please follow the [[Activity Team/How_to_migrate_from_Gitorious|instructions here]] to first set up your project's entry in GitHub.
 +
 
 +
=== How do I create a new project? ===
 +
 
 +
:First set up the project in GitHub as per above.
 +
 
 +
:Go to your project directory and type:
 +
<nowiki>git init
 +
 
 +
git add .
 +
git commit -a
 +
git remote add origin git@github.com:username/[your project name].git
 +
git push origin master</nowiki>
 +
 
 +
:Hence forth, just use:
 +
git commit
 +
git push
 +
 
 +
:You can also use
 +
git commit -a -m "I am the commit message"
 +
:to avoid opening an editor.
 +
 
 +
=== How do I add an additional committer to my project? ===
 +
 
 +
:Go to: <nowiki>https://github.com/USERNAME/PROJECTNAME/settings/collaboration</nowiki> . Type a username in the box and click "add collaborator"
  
 
=== How do I create a fork of an existing project? ===
 
=== How do I create a fork of an existing project? ===
  
Click on the Repositories Tab of the project page in Gitorious. Click on "Mainline". A link will appear on the right-hand side of the page saying, "Clone repository".
+
:Go to project page, and click the "Fork" button in the top
 +
 
 +
:Note: if you (as maintainer) are making a clone to replace a corrupted mainline on your local machine, you'll need to:
 +
 
 +
  git clone  git://github.com/username/yourproject.git
  
Note: if you (as maintainer) are making a clone to replace a corrupted mainline on your local machine, you'll need to:
+
:and update [remote] section
  
  git clone git://git.sugarlabs.org/yourproject/mainline.git
+
  git config remote.origin.url git@github.com:username/project.git
  
and update [remote] section
+
----
 +
 
 +
:in the .git/config file, you may have to change:
 +
[remote "origin"]
 +
    url = git://github.com/username/yourproject.git
 +
 
 +
:to:
 +
[remote "origin"]
 +
    url = git@github.com:username/yourproject.git
  
git config remote.origin.url gitorious@git.sugarlabs.org:yourproject/mainline.git
 
  
 
=== How do I request a merge? ===
 
=== How do I request a merge? ===
  
Click on the Repositories Tab of the project page in Gitorious. Click on "Mainline". A link will appear on the right-hand side of the page saying, "Request merge".
+
:Go to your GitHub fork page and follow the steps of the images
 +
 
 +
[[File:Merge-Step1.png]] <br />
 +
Click on the Pull Request button
 +
[[File:Merge-Step2.png]]<br />
 +
You will get something like that
 +
[[File:Merge-Step3.png]]<br />
 +
If you used another branch for changes, just change it in the image
 +
[[File:Merge-Step4.png]]<br />
 +
Click on Create Pull request
 +
[[File:Merge-Step5.png]]<br />
 +
Edit the title/description of the pull request, and click on Create pull request. Now the commiter will review it]]
 +
 
 +
===What is the difference between a branch and a repository?===
 +
 
 +
When you make a clone of a project on GitHub, it creates a "repository". You can see the list of repositories associated with a project by clicking on the Repository Tab. Branches are clones within a repository (created with git branch and accessed through git checkout). Git merge commands refer to branches, not repositories, so in order to merge a repository back into mainline, you need to pull (fetch followed by merge) it as if it were a patch.
 +
 
 +
git merge [your repository name]  # This won't work
 +
 
 +
git pull [git://git.sugarlabs.org/[your project name]/[your repository name].git master  # This will work
 +
 
 +
===How do I select which branch I am working on?===
 +
 
 +
git checkout master
 +
 
 +
git checkout sucrose-0.84
 +
 
 +
===How do I merge changes from master into a branch?===
 +
 
 +
git checkout sucrose-0.84
 +
git rebase master
 +
 
 +
===How do I push my branch to GitHub?===
 +
 
 +
Use <code>git push origin <your branch name></code>, e.g.,
 +
 
 +
git push origin sucrose-0.84
 +
 
 +
See [[Development_Team/Release#Branching]] for more details as to when and why you branch.
 +
 
 +
==Patches==
 +
 
 +
=== How do I generate a patch? ===
 +
 
 +
git diff > blah.patch
 +
:or
 +
diff -rup [old] [new]
 +
:or
 +
git format-patch HEAD^
 +
 
 +
It is preferable that you generate your patch from the root directory of your project.
 +
 
 +
=== How do I apply a patch? ===
 +
 
 +
First, take a look at what changes are in the patch. You can do this easily with '''git apply''' f.e:
 +
 
 +
git apply --stat sugar_fixes.patch
 +
 
 +
Note that this command does not apply the patch, but only shows you the stats about what it’ll do. After opening the patch file with your favorite editor, you can see what the actual changes are.
 +
 
 +
Next, you’re interested in how troublesome the patch is going to be. Git allows you to test the patch before you actually apply it.
 +
 
 +
git apply --check sugar_fixes.patch
 +
 
 +
If you don’t get any errors, the patch can be applied cleanly. Otherwise you may see what trouble you’ll run into. To apply the patch, we can  use '''git am''' instead of '''git apply'''. The reason for this is that git am allows you to sign off an applied patch. This may be useful for later reference.
 +
 
 +
git am --signoff
 +
 
 +
Taken from: [http://ariejan.net/2009/10/26/how-to-create-and-apply-a-patch-with-git/]
 +
 
 +
==== Appying a patch from thunderbird ====
 +
*Right click save as
 +
* cat <save-as>  | git am --signoff
 +
 
 +
=== How do I send a patch to a maintainer? ===
 +
 
 +
First, you may need to install git-mail:
 +
 
 +
sudo yum -y install git-email
 +
 
 +
 
 +
An easy way to send a complete patch is to commit in git, then do:
 +
 
 +
git format-patch -s -1
 +
git send-email --to <maintainer> --cc <mailing-list> <filename>
 +
 
 +
For example, you can do:
 +
 
 +
git send-email --to <maintainer> --subject=mail-subject  0003-service-name-deprecated.patch
 +
 
 +
git send-email --to <maintainer> --cc <mailing-list> --subject=new-patch --cover-letter --annotate 0001-*.patch
 +
 
 +
git send-email --to <maintainer> --cc <mailing-list> --subject=new-patch --cover-letter --annotate --no-validate 0001-*.patch
 +
 
 +
 
 +
You can also generate a [[#How do I request a merge?|merge request]] on GitHub from your forked repository to mainline.
 +
 
 +
=== How do I send a patch to the Sugar developers? ===
 +
 
 +
git send-email --to=sugar-devel@lists.sugarlabs.org 0001*.patch
 +
 
 +
==== How do I set up git-send-email? ====
 +
 
 +
1. Install git-email
 +
 
 +
2. Configure your ~/.gitconfig file
 +
[user]
 +
    email = foo@sugarlabs.org
 +
    name = Foo Bar
 +
 
 +
[sendemail]
 +
    smtpserver = smtp.gmail.com
 +
    smtpserverport = 465
 +
    smtpuser = foo@sugarlabs.org
 +
    smtpencryption = ssl
 +
    suppresscc = author
 +
 
 +
3. In the directory where patch is present use:
 +
 
 +
git send-email HEAD^..HEAD --to "sugar-devel@lists.sugarlabs.org" patchname.patch
 +
 
 +
You can configure the destination address so you don't need to specify
 +
it manually every time:
 +
 
 +
git config sendemail.to "sugar-devel <sugar-devel@lists.sugarlabs.org>"
 +
 
 +
You need to do this for each of the repositories you are working on (e.g. sugar + sugar-toolkit).
 +
 
 +
For more git send-email options please see ''man git send-email''
 +
 
 +
=== How do I amend a commit message? ===
 +
 
 +
If you have "dirty" history (i.e., other patches that are not in mainline
 +
yet) please create a branch carrying only those two patches and push
 +
that branch:
 +
 
 +
git checkout -b to-push origin/master
 +
git cherry-pick <commit ID of first patch>
 +
git commit --amend
 +
(fix summary)
 +
git cherry-pick <commit ID of second patch>
 +
git commit --amend
 +
(fix summary)
 +
git push origin to-push:master
 +
 
 +
You can remove the branch afterwards:
 +
 
 +
git checkout master
 +
git branch -d to-push
 +
 
 +
=== How do I revert a commit? ===
 +
 
 +
Again, best to do this on a branch as per [[#How do I amend a commit message?|above]]
 +
 
 +
Find the commit id and then:
 +
 
 +
git revert <commit ID>
 +
 
 +
=== As a maintainer, how do I merge a patch? ===
 +
 
 +
:git-pull does a combination of fetch and merge, so to merge a patch...
 +
 
 +
git pull git://github.com/username/myproject-clone.git master
  
=== How do I added a committer? ===
+
=== What is the community protocol for submitting patches? ===
  
Click on the Repositories Tab of the project page in Gitorious. Click on "Mainline". A link will appear on the right-hand side of the page saying, "Add Committer".
+
# Introduce yourself to the community.
 +
# Don't leave questions without a reply.
 +
# Whenever you take a task that someone else was doing, mention it explicitly so others aren't concerned about wasting efforts.
 +
# Ask when you don't understand.
 +
# Answer other people's questions when you can.
 +
 
 +
==Internationalization work flow==
 +
 
 +
{{Note/note|This section is for Gitorious only|The following does not apply to GitHub.}}
 +
 
 +
The i18n work flow involves an interplay between the Pootle server, where translations are maintained and Gitorious, where the master POT files are updated. '''Note''': As a maintainer, you may update the .pot file associated with your project, but never update .po files. These are updated for you in the i18n work flow.
  
 
=== How do I get translations for my project? ===
 
=== How do I get translations for my project? ===
Line 36: Line 247:
 
# Add User Pootle to the list of committers on your project.
 
# Add User Pootle to the list of committers on your project.
  
=== What if my project has a binary blob? ===
+
=== How do I stay in sync with translations being pushed from the Pootle server? ===
 +
 
 +
:Periodically—in my experience, on Fridays—updates to the project .po files are pushed from the Localization team.
 +
 
 +
:Use <code> git-pull </code> to periodically pull these updates to the local copy of your project.
 +
 
 +
:Also, run <code>python setup.py fix_manifest</code> to update the .mo files after updating the .po files
 +
 
 +
:'''Note:''' After every major release, a new branch is created on the Pootle server, e.g., Fructose-0.82 and Fructose-0.84. The Localization team may push translations to any or all of the corresponding branches of your project. Changes to your master branch are not necessarily intended for the release branches.
 +
 
 +
=== How do my string changes get into Pootle? ===
  
You may have to use the --force flag.
+
Any changes to your project's .pot file are daily pulled into Pootle from git. All you have to do as a developer is make to regenerate your pot file whenever you make string changes.
  
  git push -fv
+
setup.py genpot
 +
git commit po/Myproject.pot -m "new strings"
 +
  git push
  
=== How do I stay in sync with translations being pushed from the Pootle server? ===
+
==Misc.==
  
Periodically—in my experience, on Fridays—updates to the project .po files are pushed from the Localization Team.
+
=== What if my project has a binary blob? ===
  
Use <code> git-pull </code> to periodically pull these updates to the local copy of your project.
+
:You may have to use the --force flag.
  
Also, run <code>python setup.py fix_manifest</code> to update the .mo files after updating the .po files
+
git push -fv
  
=== How do I update the Tag field in Gitorious? ===
+
=== How do I update the Tag field in GitHub? ===
  
 
  git tag -m "Release 36" v36 HEAD
 
  git tag -m "Release 36" v36 HEAD
 
  git push --tags
 
  git push --tags
  
=== As a maintainer, how do I merge a patch? ===
+
=== How do I list tags ? ===
  
git-pull does a combination of fetch and merge, so to merge a patch...
+
git tag -l
  
git pull git://git.sugarlabs.org/myproject/myproject-clone.git master
+
=== How do I checkout specific tags? ===
  
===How do I select which branch I am working on?===
+
git checkout <tag_name>
  
git checkout master
+
=== How do I delete specific tags? ===
  
  git checkout sucrose-0.84
+
  git tag -d <tag_name>
 
+
git push origin :refs/tags/<tag_name>
===How do I merge changes from master into a branch?===
 
  
git checkout sucrose-0.84
+
===How can I get commit access behind firewall?===
git rebase master
 
  
==Misc.==
+
:If you are behind a firewall and need only ''Read-Only'' access to git.sugarlabs.org, you can use HTTP links, like
 +
https://github.com/username/<project>.git
 +
:But if you need commit access, you'll have to set up an SSH proxy tunnel. One option is using [http://www.torproject.org/ Tor]. So, install all requirements:
 +
* [http://www.torproject.org/ Tor] to make tunnel via Tor network,
 +
* [http://www.meadowy.org/~gotoh/projects/connect/ connect] to let SSH use this tunnel.
 +
:You don't need any special configs for this software (in case of Tor, if your distribution makes some smart pre-configurations, just remove /etc/tor/torrc).
  
=== Where do I put the .xo file for my project? ===
+
:Setup your tunnel in SSH. Add the following lines to your ~/.ssh/config
 +
Host github.com
 +
    User git
 +
    ProxyCommand /usr/bin/connect -S 127.0.0.1:9050 github.com 22
  
We are using addons.sugarlabs.org to host Activity bundles. Create an account and put your project's .xo file there.
+
:Then start [http://www.torproject.org/ Tor], you can just run it on behalf of your account
 +
tor
  
=== Where do I put the source tarball for my project? ===
+
:Then do the regular stuff you can do without any firewalls.
  
download.sugarlabs.org:/var/www-sugarlabs/download/sources/
+
:''NOTE:'' If you use [http://www.torproject.org/ Tor] on a regular basis, please consider the possibility of [http://www.torproject.org/docs/tor-doc-relay.html.en helping] Tor by donating your bandwidth.
  
Specifically, if it is a Fructose project, it goes here:
+
===Why are my commits not visible on git.sugarlabs.org event pages?===
  
download.sugarlabs.org:/var/www-sugarlabs/download/sources/sucrose/fructose/[your project directory]/
+
Check that your email address on git.sugarlabs.org account page is the same like in [[Activity_Team/Git_Tutorial#Initialize_git_global_settings|global git settings]] or in local repository setting (if you set user.email once):
 +
git config user.email
  
Honey projects go here:
+
=== New activity maintainer walkthrough ===
  
download.sugarlabs.org:/var/www-sugarlabs/download/sources/honey/[your project directory]/
+
Here's an IRC session recording the very first steps of new activity maintainer learning how to merge patches:
  
=== Where should I document my project? ===
+
*:[[Activity_Team/Git_Activity_Maintainer_Walkthrough]]
  
Please create a subpage in the wiki under Activities, e.g., [[Activities/Turtle Art]]
 
  
[[Category:ActivityTeam]]
+
[[Category:Activity Team]]
 +
[[Category:FAQ]]

Latest revision as of 18:06, 2 December 2014

Team Home   ·   Join   ·   Contacts   ·   Resources   ·   FAQ   ·   Roadmap   ·   To Do   ·   Meetings

Post new questions here.

Using GitHub (github.com)

Help! I suddenly can't connect to GitHub!

Please contact to GitHub support, or look at GitHub FAQ

How do I create an account on github.com?

Join using the link on the upper right menu on the Home Page.

How do I migrate a project to GitHub?

Please follow the instructions here to first set up your project's entry in GitHub.

How do I create a new project?

First set up the project in GitHub as per above.
Go to your project directory and type:
git init

git add .
git commit -a
git remote add origin git@github.com:username/[your project name].git
git push origin master
Hence forth, just use:
git commit
git push
You can also use
git commit -a -m "I am the commit message"
to avoid opening an editor.

How do I add an additional committer to my project?

Go to: https://github.com/USERNAME/PROJECTNAME/settings/collaboration . Type a username in the box and click "add collaborator"

How do I create a fork of an existing project?

Go to project page, and click the "Fork" button in the top
Note: if you (as maintainer) are making a clone to replace a corrupted mainline on your local machine, you'll need to:
 git clone  git://github.com/username/yourproject.git
and update [remote] section
git config remote.origin.url git@github.com:username/project.git

in the .git/config file, you may have to change:
[remote "origin"]
    url = git://github.com/username/yourproject.git
to:
[remote "origin"]
    url = git@github.com:username/yourproject.git


How do I request a merge?

Go to your GitHub fork page and follow the steps of the images

Merge-Step1.png
Click on the Pull Request button Merge-Step2.png
You will get something like that Merge-Step3.png
If you used another branch for changes, just change it in the image Merge-Step4.png
Click on Create Pull request Merge-Step5.png
Edit the title/description of the pull request, and click on Create pull request. Now the commiter will review it]]

What is the difference between a branch and a repository?

When you make a clone of a project on GitHub, it creates a "repository". You can see the list of repositories associated with a project by clicking on the Repository Tab. Branches are clones within a repository (created with git branch and accessed through git checkout). Git merge commands refer to branches, not repositories, so in order to merge a repository back into mainline, you need to pull (fetch followed by merge) it as if it were a patch.

git merge [your repository name]   # This won't work
git pull [your project name/[your repository name].git master  # This will work

How do I select which branch I am working on?

git checkout master
git checkout sucrose-0.84

How do I merge changes from master into a branch?

git checkout sucrose-0.84
git rebase master

How do I push my branch to GitHub?

Use git push origin <your branch name>, e.g.,

git push origin sucrose-0.84

See Development_Team/Release#Branching for more details as to when and why you branch.

Patches

How do I generate a patch?

git diff > blah.patch
or
diff -rup [old] [new]
or
git format-patch HEAD^

It is preferable that you generate your patch from the root directory of your project.

How do I apply a patch?

First, take a look at what changes are in the patch. You can do this easily with git apply f.e:

git apply --stat sugar_fixes.patch

Note that this command does not apply the patch, but only shows you the stats about what it’ll do. After opening the patch file with your favorite editor, you can see what the actual changes are.

Next, you’re interested in how troublesome the patch is going to be. Git allows you to test the patch before you actually apply it.

git apply --check sugar_fixes.patch

If you don’t get any errors, the patch can be applied cleanly. Otherwise you may see what trouble you’ll run into. To apply the patch, we can use git am instead of git apply. The reason for this is that git am allows you to sign off an applied patch. This may be useful for later reference.

git am --signoff 

Taken from: [1]

Appying a patch from thunderbird

  • Right click save as
* cat <save-as>  | git am --signoff

How do I send a patch to a maintainer?

First, you may need to install git-mail:

sudo yum -y install git-email


An easy way to send a complete patch is to commit in git, then do:

git format-patch -s -1
git send-email --to <maintainer> --cc <mailing-list> <filename>

For example, you can do:

git send-email --to <maintainer> --subject=mail-subject  0003-service-name-deprecated.patch
git send-email --to <maintainer> --cc <mailing-list> --subject=new-patch --cover-letter --annotate 0001-*.patch
git send-email --to <maintainer> --cc <mailing-list> --subject=new-patch --cover-letter --annotate --no-validate 0001-*.patch


You can also generate a merge request on GitHub from your forked repository to mainline.

How do I send a patch to the Sugar developers?

git send-email --to=sugar-devel@lists.sugarlabs.org 0001*.patch

How do I set up git-send-email?

1. Install git-email

2. Configure your ~/.gitconfig file

[user]
   email = foo@sugarlabs.org
   name = Foo Bar
[sendemail]
   smtpserver = smtp.gmail.com
   smtpserverport = 465
   smtpuser = foo@sugarlabs.org
   smtpencryption = ssl
   suppresscc = author

3. In the directory where patch is present use:

git send-email HEAD^..HEAD --to "sugar-devel@lists.sugarlabs.org" patchname.patch

You can configure the destination address so you don't need to specify it manually every time:

git config sendemail.to "sugar-devel <sugar-devel@lists.sugarlabs.org>"

You need to do this for each of the repositories you are working on (e.g. sugar + sugar-toolkit).

For more git send-email options please see man git send-email

How do I amend a commit message?

If you have "dirty" history (i.e., other patches that are not in mainline yet) please create a branch carrying only those two patches and push that branch:

git checkout -b to-push origin/master
git cherry-pick <commit ID of first patch>
git commit --amend

(fix summary)

git cherry-pick <commit ID of second patch>
git commit --amend

(fix summary)

git push origin to-push:master

You can remove the branch afterwards:

git checkout master
git branch -d to-push

How do I revert a commit?

Again, best to do this on a branch as per above

Find the commit id and then:

git revert <commit ID>

As a maintainer, how do I merge a patch?

git-pull does a combination of fetch and merge, so to merge a patch...
git pull git://github.com/username/myproject-clone.git master

What is the community protocol for submitting patches?

  1. Introduce yourself to the community.
  2. Don't leave questions without a reply.
  3. Whenever you take a task that someone else was doing, mention it explicitly so others aren't concerned about wasting efforts.
  4. Ask when you don't understand.
  5. Answer other people's questions when you can.

Internationalization work flow

35px-Activity-write.png
This section is for Gitorious only
The following does not apply to GitHub.

The i18n work flow involves an interplay between the Pootle server, where translations are maintained and Gitorious, where the master POT files are updated. Note: As a maintainer, you may update the .pot file associated with your project, but never update .po files. These are updated for you in the i18n work flow.

How do I get translations for my project?

  1. Use the gettext mechanism for your stings.
  2. Use python setup.py genpot to generate a .pot file for your project.
  3. Fill a ticket requesting that your POT file be added to Pootle. Assign the ticket to "Localization".
  4. Add User Pootle to the list of committers on your project.

How do I stay in sync with translations being pushed from the Pootle server?

Periodically—in my experience, on Fridays—updates to the project .po files are pushed from the Localization team.
Use git-pull to periodically pull these updates to the local copy of your project.
Also, run python setup.py fix_manifest to update the .mo files after updating the .po files
Note: After every major release, a new branch is created on the Pootle server, e.g., Fructose-0.82 and Fructose-0.84. The Localization team may push translations to any or all of the corresponding branches of your project. Changes to your master branch are not necessarily intended for the release branches.

How do my string changes get into Pootle?

Any changes to your project's .pot file are daily pulled into Pootle from git. All you have to do as a developer is make to regenerate your pot file whenever you make string changes.

setup.py genpot
git commit po/Myproject.pot -m "new strings"
git push

Misc.

What if my project has a binary blob?

You may have to use the --force flag.
git push -fv

How do I update the Tag field in GitHub?

git tag -m "Release 36" v36 HEAD
git push --tags

How do I list tags ?

git tag -l 

How do I checkout specific tags?

git checkout <tag_name>

How do I delete specific tags?

git tag -d <tag_name>
git push origin :refs/tags/<tag_name>

How can I get commit access behind firewall?

If you are behind a firewall and need only Read-Only access to git.sugarlabs.org, you can use HTTP links, like
https://github.com/username/<project>.git
But if you need commit access, you'll have to set up an SSH proxy tunnel. One option is using Tor. So, install all requirements:
  • Tor to make tunnel via Tor network,
  • connect to let SSH use this tunnel.
You don't need any special configs for this software (in case of Tor, if your distribution makes some smart pre-configurations, just remove /etc/tor/torrc).
Setup your tunnel in SSH. Add the following lines to your ~/.ssh/config
Host github.com
    User git
    ProxyCommand /usr/bin/connect -S 127.0.0.1:9050 github.com 22
Then start Tor, you can just run it on behalf of your account
tor
Then do the regular stuff you can do without any firewalls.
NOTE: If you use Tor on a regular basis, please consider the possibility of helping Tor by donating your bandwidth.

Why are my commits not visible on git.sugarlabs.org event pages?

Check that your email address on git.sugarlabs.org account page is the same like in global git settings or in local repository setting (if you set user.email once):

git config user.email

New activity maintainer walkthrough

Here's an IRC session recording the very first steps of new activity maintainer learning how to merge patches: