tlbuild: Transfer from Subversion to Github
9.1 Transfer from Subversion to Github
======================================
The git-svn program (<https://git-scm.com/docs/git-svn>) is used to
check out the subtree 'Build/source' of the canonical Subversion
repository. The author index file used is not maintained in either Git
or Subversion but can be provided on request.
The initial checkout was done by invoking
git svn --authors-file usermap clone \
svn://USER@tug.org/texlive/trunk/Build/source
where the 'usermap' file maps Subversion user names to name and emails
of the authors. Anonymous checkout is also possible:
git svn --authors-file usermap clone \
svn://tug.org/texlive/trunk/Build/source
In the following, we will use _admin_ to refer to a user who has
read/write access to the TeX Live subversion repository, and is also an
administrator of the ''TeX-Live'' team at Github. The above initial
checkout has been carried out by _admin_ on the server 'texlive.info'.
On Github, a new git repository named 'texlive-source' was created by
_admin_ within the 'TeX-Live' "organization"
(<https://github.com/TeX-Live>). The remote was added to the checkout
with 'git remote add origin git@github.com:TeX-Live/texlive-source.git'.
To automate the update on Github, a new ssh key was generated and
added to the 'texlive-source' repository on Github as deployment key.
Thus, pushes using this key can only go to the 'texlive-source'
repository and not anywhere else.
The usage of 'git-svn' requires a strict discipline to keep a linear
history in the master branch. Since we are aiming at a pure mirror
facility on Github, we have decided to further restrict the 'master'
branch of the 'texlive-source' repository on Github to changes by
_admin_.
This setup allows other developers to branch off 'master' and push
their branches to the Github repository, but all updates need to come
from the local 'master' (not the one on Github) to Subversion, back to
'master' on 'texlive.info', and from there to Github.
Info Catalog
tlbuild: Continuous integration
tlbuild: Automatic update of the Git mirror