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flatpak-docs

This repository is the main source of developer documentation for Flatpak. It can be read at docs.flatpak.org.

Some documentation is also available on the Flatpak wiki and as part of the flatpak and flatpak-builder man pages.

The docs are written in reStructuredText and contributions are welcome!

Setup Development

Create a Python virtual environment:

python3 -m venv .venv && source .venv/bin/activate

Then install the dependencies with pip:

pip install -r requirements.txt

Build the Documentation

After setup, you can build the documentation:

make -C docs html

Run the tests:

make -C docs linkcheck

You can run an HTTP server and follow the printed link (localhost:8000) to view the documentation in your browser:

python3 -m http.server -d docs/_build/html

Build Translations

By default, the document being built is in English. If you want to build documents in other languages, such as Chinese, you can use the following command:

make -C docs html SPHINXOPTS='-D language=zh_CN'

Translate the Documentation

You can open a pull request adding a new language.

Maintainers can generate the template files (.pot), update the translation files (.po) and remove obsolete translation files (i.e. a matching .pot file no longer exists) by running:

make -C docs update-po

Audience

Desktop application developers are the primary audience for the Flatpak docs, particularly the authors of existing applications, including those from non-Linux platforms.

The docs should reflect popular practice amongst this audience wherever possible and not assume that applications are coming from the Linux desktop space. In practical terms, this means that we should expect:

  • Git for version control
  • GitHub for hosting
  • Freedesktop runtimes
  • No prior knowledge of Linux desktop conventions, such as .desktop files, AppStream and D-Bus

Outside of these basic defaults, special separate attention should be paid to popular cross-platform technologies such as Electron and Qt.

Guidelines

Guidelines for those who want to contribute to the docs:

  • Explain basic Flatpak concepts
  • Focus on standard application developer workflows
  • Use the docs to explain the benefits of Flatpak and why a developer might use it
  • Only cover what's essential for application developers - don't include details of Flatpak internals unless absolutely necessary
  • Provide a developer experience that's as smooth and frictionless as possible
  • Help to prevent difficulties by anticipating potential issues developers might hit, and steering them clear of them