Automate sync to CP2K SVN

[dev-zero]

The setup on a worker which is going to fetch Git commits in a bunch and pushes them to CP2K SVN could look as follows if we do not want to replicate the complete history from DBCSR in SVN anymore.

Initial setup:

svn co https://svn.code.sf.net/p/cp2k/code/trunk/cp2k/exts/dbcsr /tmp/dbcsr-sync
cd /tmp/dbcsr-sync
git init
git remote add origin https://github.com/cp2k/dbcsr.git
git fetch origin
git checkout -b master --track origin/master

# make sure .git is never added
echo '.git' >> .svnignore

The task runner would then have to do something along the lines:

cd /tmp/dbcsr-sync

git rev-parse HEAD
curr_hash=$(git rev-parse HEAD)
git pull --rebase

# adding new files is easy, simply force-add everything
svn add --force .
# removing files is a bit trickier
svn status | sed -e '/^!/!d' -e 's/^!//' | xargs svn rm

curr_hash=$(git rev-parse HEAD)

commit_msg=$(mktemp)
echo "Updating DBCSR from git @{$curr_hash}" > "${commit_msg}"
git log "${prev_hash}..${curr_hash}" >> "${commit_msg}"
svn commit --file "${commit_msg}"
rm "${commit_msg}"

This would result in squashed commits.

Other options/variations:

• replicate individual commits via git-svn or custom scripts
• do not pull from master (which is supposed to be stable) but yet another sync-to-CP2K branch

[dev-zero]

since we are moving CP2K to Git sooner than anticipated, we can close this bug