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Contributing to Base Worker

We welcome every contribution possible to improve Base Worker. Whether it is Python code, translations, design suggestions, small fixes, etc.

If you want to discuss some ideas, send us an email at team (at)!

Cloning the source code

It is as simple as running the following command:

git clone

As Base Worker is open-source, you do not need any authentication to retrieve its source code. However, if you wish to work on Base Worker source code and submit patches, you will need to authenticate yourself. Steps to do so are detailed just below.

GitLab setup

We assume you already have:

  • a working git client installation on your computer
  • an SSH key to authenticate yourself on a GitLab instance

You can find more information here.

Sign up on Teklia’s GitLab instance

At Teklia, we use GitLab a lot. We use it to host all our source code, work as a team, build and ship our projects, etc.

You can sign up on Teklia’s GitLab instance here.

Please note that your account will need to be approved by an administrator which could take up to one business day.

Add your SSH key

Once you are connected to, you need to add your SSH public key to your user account on Teklia’s GitLab instance. To do so, you can follow the official GitLab instructions.

Security warning

Do not use HTTPS to clone a repository, it will require you to type your GitLab password when cloning/pushing.

Activate 2FA

To gain and keep access on Base Worker’s GitLab repository as a contributor, your GitLab account must be protected with Multiple Factor Authentication (generally using one time passwords generated from your phone).

You will need to setup an app like Google Authenticator or Duo Mobile on your phone, and then follow these steps.

If you do not complete the 2FA initial activation within 48 hours of creating your account, it will be automatically disabled.

Submitting a patch to Base Worker’s source code

Find issues

We use GitLab to track issues (either bugs, or new features).

You can look at Base Worker’s issues from different views:

  • through the current milestone, the most important issues are listed there, as they are the most time-sensitive
  • through the full issue list


Please ask first if you can work on an issue, by simply commenting on it. Be aware that some issues may be way more complex than others.


Issues should have a priority label:

  • P1 are high priority, usually bugs badly affecting users experience,
  • P2 are at the normal priority level
  • P3 are low priority

If nothing is set, assume P2 by default.

Work on a branch

To start working on a patch, you must first create a git branch, based on the current master branch:

# Start from master
git checkout master

# Update master to latest available revision
git pull origin master

# Create a new branch
git checkout -b my-new-branch

Each new commit will then be stored on that new branch named my-new-branch.

To name your branch, use a name:

  1. in English,
  2. in lowercase,
  3. without spaces, use dashes - to link words,
  4. explicit and related to your current work.

Here are some examples of suitable branch names:

  • remove-model-x when the goal is to remove a python module named X
  • fix-invalid-chars-search when the patch fixes a bug related to search
  • bump-dependency-y
  • add-super-feature
  • feature-z

Please avoid:

  • naming your branch with the issue ID, we prefer explicit naming here,
  • using another language than English,
  • spaces, camelCase, underscores, etc.

Publish your work

You are allowed to push directly on Base Worker’s repository, except for the master branch. The goal is for your code to reach master once the following steps are completed:

  1. unit tests are all OK, meaning that all jobs in the CI stage named test ended in success
  2. formatting has been validated by a tool, meaning that all jobs in the CI stage named test ended in success
  3. the code itself has been approved by a human reviewer

To get approvals, you need to create a Merge Request (also called MR) on GitLab.

When pushing your code from your local branch, you will notice some output in the console with a link towards it will allow you to create a Merge Request (or view the previously created one) in 2 clicks.

Once your work is ready, configure your Merge Request as follows:

  • Assign yourself as the Assignee.
  • Assign @babadie as the Reviewer, he will either review or re-assign to another reviewer when needed.
  • Set an explicit name, in English, properly formatted.
  • Add a reference to the issue you are working on in the description:
    • Closes #XYZ if you fully solve the mentioned issue,
    • Ref #XYZ if you only want to link your Merge Request to the issue.
  • Fill in the description with an explanation of the changes you made.
  • If the related issue has a milestone set, set the same milestone on this Merge Request.

If you are not confident the work being published is yet ready for review, you can prefix your Merge Request name with Draft:; that will tell the reviewer to wait a bit before diving into your code. Do not forget to remove that prefix once your code is ready.

The reviewer may leave some comments directly on the Merge Request, asking you for updates. Please resolve all of them (or discuss them if you disagree), publish some commits fixing the issues, and then ask for a new review. Rinse and repeat until the reviewer approves and merges your code!

Update your branch

As other developers are working on Base Worker, sometimes features/bugfixes/etc will land on master while your Merge Request touches the same parts. You may get conflicts here and will need to solve them using a rebase.


It is your responsibility, as a developer, to maintain your code in a mergeable state: no conflicts and up to date with the latest master.

To update using rebase, while working on your branch:

# Retrieve the latest updates from master
git fetch origin master

# Now the remote reference to origin/master has been updated, you can rebase on top of it
# Be aware that the local reference to master is not yet updated, it is only updated with git pull
git rebase origin/master

The git rebase operation will ask you to solve manually conflicts (if any). Please follow this guide or ask us for help if you are lost.

Landing your code

If you have reached this step, congratulations and many thanks! Your code has been approved and should already be merged, as that is the responsibility of the reviewer.

Your work will be shipped in the next Base Worker release along with latest features, bugfixes and other contributions.

Building the documentation


Add the docs extra when installing arkindex-base-worker:

# In a clone of the Git repository
pip install .[docs]

Build the documentation using mkdocs serve -v. The documentation should be available at http://localhost:8000.

Writing documentation

This documentation uses Sphinx and was generated using mkdocs and mkdocstrings.


This documentation is subject to linting using markdownlint, integrated into pre-commit. You can run it locally by typing pre-commit run. You should use pre-commit install to have the pre-commit hook run before each Git commit.

The linting rules that markdownlint applies can be found on its documentation.

Some rules are disabled: