The purpose of this text also available on the Sage wiki is to explain how to share your branch of Sage development. I am sure there more than one way to do so, but the solution shown here is the same as the way Sage Combinat shares its development.
First, clone the sage-main. Below, I use my sage trac username to name that branch, because it's my branch of Sage development:
sage -b main sage -clone slabbe
Go to the directory associated to that new branch and initialize the Queue for Mercurial. See Sage Development Manual : Mercurial queues for more details.
cd SAGE_HOME/devel/sage-slabbe hg qinit
This last step created a new directory (SAGE_HOME/devel/sage-slabbe/.hg/patches) where your patches will be saved. In order to share your branch, you simply need to share this directory. For example, you can copy its content to a public directory on your web site. You can also use svn, git or any other revision control system. As I want to work on my branch the exact same way as I am working on the sage-combinat branch, I choose to use hg.
Now I log on the server that will host my patches, I create the (public) patches directory and I initialize that directory as an hg directory:
ssh email@example.com mkdir patches cd patches hg init
I also add a hook to that public repository so that it updates itself automatically when a push is made to it. In other words, I edit the file ~/patches/.hg/hgrc so that it becomes:
#file ~/patches/.hg/hgrc [hooks] changegroup = hg update
I then logout from the server and go to the patches directory on my machine and make a clone of the public patches repository created above. I could use the http adress, but I use the ssh one so that I can push to the server later on:
cd SAGE_HOME/devel/sage-slabbe/.hg/patches hg clone ssh://firstname.lastname@example.org:~/patches .
Like for the Sage-combinat repository, I create in .hg/patches a file called .hgignore containing the following:
# file .hgignore syntax: glob status guards
Then, add, commit and push this first change to the server:
hg add .hgignore hg commit -m "Added the .hgignore file" hg push
I can now create patches on my branch like in sage-combinat:
cd SAGE_HOME/devel/sage-slabbe/ hg qnew trac_XXXX-fixing-stuff.patch vim sage/combinat/partition.py hg qrefresh -e
I can push my changes to my public server like in sage-combinat:
cd SAGE_HOME/devel/sage-slabbe/.hg/patches hg st hg commit hg push
For the first time, you may need to add the series file as well:
cd SAGE_HOME/devel/sage-slabbe/.hg/patches hg add series hg commit hg push
Last thing, notice that the sage-combinat script can be used to install your branch on any Sage installation with the following one liner:
sage -combinat install -b slabbe -s http://server.com/path/to/your/username/patches/
In my case, the result is here