Contributing to DORiE

Thank you for taking your time and contributing to DORiE! πŸ‘

License and Distribution

DORiE is licensed under the GNU General Public License Version 3. Contributors to the DORiE project and source code agree that their contributions are published and may be distributed according to this license. All contributors will be acknowledged in the authors list.

Code of Conduct

Everybody participating in and contributing to this project is expected to uphold our attached Code of Conduct. Report any unacceptable behavior to the DORiE Developers!

How to Contribute

DORiE is open source software. We strive for making every stage of development public, sharing our advances, and incorporating community contributions. We therefore prefer public contributions of any kind via GitLab.

GitLab Account

The DORiE repository is hosted on the private GitLab instance of the TS-CCEES research group at the Institute of Environmental Physics (IUP) Heidelberg.

As the GitLab instance hosts many of our group-internal projects, new users will be registered as external users with access to the public repositories only and without rights to create their own projects. Use the β€œRequest Access” button if you want to become a member of a certain project.

Questions and Bug Reports

Before asking questions or reporting bugs, please make sure your issue cannot be resolved by following the instructions in the Troubleshooting section of the

If you want to report a bug, raise an issue and use the bug-report description template to provide as much information as possible. We prefer discussing even minor issues in public, so feel free to open an issue for presumably minor questions as well.

Code Development

Suggest features or plan implementations in GitLab issues. We provide the task and meta-task description templates for structuring your planning and for providing the required information to other developers.

Consult the Doxygen documentation of the DORiE source code for information on how certain features of DORiE are used within the C++ source code.

Any changes to source code should be accompanied by a (unit) test verifying the functionality. Designing this test ideally happens in the planning phase of a change. DORiE vendors Google Test as unit test framework. Check out the Doxygen documentation for information on how to employ the framework in DORiE.

After a proper discussion of the issue, and the resulting implementation, open a merge request. Again, we encourage you to use one of the description templates. Provide information on how your code changes and additions solve the problem or implement the feature. Make sure that your MR fulfills the the criteria for being merged.

C++ Coding Style

The DORiE repository contains a .clang-format file in the top-level directory specifying the desired style for C++ code in DORiE. We ask developers to use this style when writing new code, ideally by instructing their editor and/or ClangFormat tool to do so. Every change to C++ files introduced by Git commits should be formatted according to this style.

DORiE vendors clang-format-hooks to automate formatting and avoid committing unformated changes. It contains a Git pre-commit hook which checks the changes right before committing. If the changes to not comply to the coding style, the user is shown the suggested style and prompted to apply the changes or abort the commit. Follow these instructions for registering the hook:

  1. Install clang-format.

    On macOS:

    brew install clang-format

    On Ubuntu:

    apt install clang-format
  2. Register the hook. From the top-level DORiE source directory, execute

    ./plugins/vendor/clang-format-hooks/git-pre-commit-format install

When running in trouble, consult the original installation instructions.

Happy coding!


Tasks for creating and publishing a release are listed in the version-rollout and patch-release issue description templates. For patching a release, an additional patch-release merge request description template is provided.

Old-Fashioned Email

Of course, you can always contact the developers directly via mail.