How to write a Fractal-compatible custom task

The fractal-tasks-core repository is the reference implementation for Fractal tasks and for Fractal task packages, but the Fractal platform can also be used to execute custom tasks.

For the most recent versions of Fractal (namely fractal-server v2 and fractal-tasks-core v1), the instructions for building your own tasks are available at https://fractal-analytics-platform.github.io/build_your_own_fractal_task.

As a reference, here is a copy of the legacy instructions for older Fractal versions, which are currently obsolete.