Releases are automatically archived on Zenodo. After making a release, a DOI is made available by Zenodo which can be used in publications.


  • Make sure the version number in the main CMakeLists.txt is correct

  • Draft a release on Github. Currently we do not use the letter v to prefix version numbers.

Conda package

Conda-Forge detects new LUE releases automatically. In our case, Conda-Forge looks in a specific location for a zipped tar file containing the LUE source files (<version>.tar.bz2). The first step in creating a Conda package for a new release of LUE, is to upload a new zipped tar file to this location. Example workflow:

# Create a directory containing (only) the sources associated with the new release. Currently
# it is relevant that this directory contains the .git subdirectory.
mkdir -p tmp  # Whatever
cd tmp
# Update for actual tag associated with release
git clone --depth 1 --branch 0.3.4 --single-branch
tar cjf lue-0.3.4.tar.bz2 lue
# Determine hash, to store in meta.yaml
openssl sha256 lue-0.3.4.tar.bz2
# ... ftp zip to ftp server ...

It may take a few hours for Conda-Forge to detect the new release. Once it has, a pull request is created automatically, and all kinds of tests and builds are started automatically. These may or may not succeed. Information about this can be found on the lue-feedstock page at Github.

The pull request is based on a new branch in a clone of the lue-feedstock repository, located in the regro-cf-autotick-bot Github organisation. To make changes to this branch, the folowing workflow can be used:

# Clone the repository and checkout the branch associated with the PR
mkdir -p development/project/github/regro-cf-autotick-bot  # Whatever
cd development/project/github/regro-cf-autotick-bot
git clone
git checkout 0.3.4_h813c5f  # Update for actual branch mentioned in PR
# ... make changes ...
git push


Before merging the changes in the pull request’s branch the build number in meta.yaml must be correct:

  • In case LUE’s version was bumped, the build number must be 0. This is done by the bot that created the pull request in the first place.

  • In case LUE’s version was not bumped, the build number must be bumped by 1. In this case there was some other reason for rebuilding a Conda package.

Once the PR is fine, merge it into the main branch.