julia-pkgextension

Julia package extensions provide optional, conditional functionality by using weak dependencies that only load features when a specific trigger package is imported, keeping the core package lean. This improves modularity and reduces load times for users who do not need those specific features.

You can add a weak dependency like Makie.jl to your package and create an extension module. This conditionally loads plotting capabilities only when the user imports the trigger package, ensuring your core package remains lightweight and fast to load.

You structure the extension module within your package and leverage weak dependencies for programmatic loading. The extension is automatically triggered and loaded when the user imports the specific dependent package, integrating seamlessly with your existing workflows.

Yes, building Julia package extensions supports integration with documentation and testing workflows. This ensures your conditionally loaded modules and optional functionality are properly tested and documented alongside your core package development process.

You should use conditional loading with weak dependencies when you want to provide optional functionality that only certain users need. This prevents forcing all users to install heavy dependencies and significantly reduces package load times for those who do not use the extensions.