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picard/RELEASING.md

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# Picard release process
## Release preparation (few weeks/days before)
### Synchronize picard.pot with sources
```bash
python setup.py regen_pot_file && git diff --quiet || git commit -m 'Update pot file' -- po/picard.pot
```
And push changes to main remote repository, see [po/README.md](po/README.md) for details about translations
## Ensure git repository tree is clean
From the local repository:
### Check out the repo master branch
```bash
git fetch $PICARD_REMOTE && git checkout master
```
### Ensure nothing is on the way
```bash
git reset --hard $PICARD_REMOTE/master && git clean -f -d
```
#### Remove old compiled modules
```bash
find . -type f -name '*.pyc' -exec rm -f {} \;
```
### Tag to save the current state
```bash
git tag "before-release-$PICARD_VERSION" --force
```
### Remove any BOM nasty bytes from files
This shouldn't be needed, but better to check before releasing
```bash
git ls-tree --full-tree -r HEAD --name-only |while read f; do sed -i '1s/^\xEF\xBB\xBF//' "$f"; done && git diff --quiet || git commit -a -m 'Remove nasty BOM bytes'
```
## Get latest translations from Transifex
```bash
python setup.py pull_translations && git diff --quiet || git commit -m 'Update .po files' -- po/
```
## Synchronize generated consts
```bash
python setup.py update_constants && git diff --quiet || git commit -a -m 'Update constants' -- picard/const/*.py
```
## Update NEWS.txt
TODO: explain how
## Update Picard version
Edit `picard/__init__.py` and set new version tuple
Run tests:
```bash
python setup.py test
```
Commit changes!
## Tag new version
```bash
git tag -s "$PICARD_RELEASE_TAG" -m "Release $PICARD_VERSION"
```
Stable release tags have the following format: `release-#.#.#`
Example: `release-2.1.0`
## Update Picard version to next dev version
Edit `picard/__init__.py` and set new dev version tuple.
Run tests:
```bash
python setup.py test
```
Commit changes!
## Push new commits and tags to remote
```bash
git push "$PICARD_REMOTE" master:master
git push "$PICARD_REMOTE" tag "$PICARD_RELEASE_TAG"
```
### To revert after push
```bash
git tag -d "release-$PICARD_VERSION"
git reset --hard "before-release-$PICARD_VERSION"
git push "$PICARD_REMOTE" :"$TAG"
git push "$PICARD_REMOTE" "before-release-$PICARD_VERSION":master --force
```