Display info about where to get a package

[tcompa]

We'd like to tell whoever visits the public task page how they can use these tasks.

What is this information

The different options are:

• For a PyPI-available package, here is the task name.
• For a remote wheel URL, here is the URL to the wheel file.

It's simple to generate this piece of metadata in the script where we are producing the data for https://fractal-analytics-platform.github.io/fractal_tasks. We can come up with any kind of (internal) representation of this information, e.g. an attribute with values like:

• pypi:fractal_tasks_core
• remote_wheel:https://github.com/fmi-basel/gliberal-scMultipleX/releases/download/v0.8.0/scmultiplex-0.8.0-py3-none-any.whl.

Question A: where does this info live?

Is it OK that this information is only generated here when preparing this public page?

Or would it need to be an actual task-package piece of metadata? (note it could be a bit annoying to include wheel URLs in the manifest before the actual release, although they can be guessed).

My opinion: it's easy to generate it on the fly, and I would spare the task maintainers this burden.

Question B: how is this info displayed?

Some examples:

1. Clicking somewhere (e.g. on the task-package name, or on a new icon/column) opens up a modal showing a processed version of the attribute described above. E.g. it would say either "Use the fractal_tasks_core package name" or "Download this wheel file and upload it to your favorite Fractal instance".
   • If we have something like this, is it specific for the public-tasks-page table or does it affect fractal-web as well? I'd say it is specific, because within a Fractal instance you don't need to re-add existing tasks. This also depend on the question A above.
2. On a different page, we list all "known" task packages and for each one of them we describe how to add it to a Fractal instance.

[jluethi]

A: Yes, let's generate this on-the-fly for the public page

B: Display. Let's add a button to each task row: +. Opens a modal with installation instructions.
pypi:
Add to Fractal: pypi name
Local installation in Python:: "pip install package-name"

Github release whl:
Add to Fractal: Download whl & add to Fractal
Local installation in Python: Download & and pip install whl

Qs:
extras?
Hard-code it in the list we keep on the public page: We have custom strings on how things would need to be installed for non-standard case
That field overwrites auto-generated installation instructions, it's set by Fractal admins when adding a task

[tcompa]

In practice:

1. Enrich the sources list. Each source may be associated to a markdown string that says how to add/install the package. If present, this overrides the autogenerated content.
2. Store this new piece of information in a install_instructions property of tasks.

[tcompa]

With #11 we have an example for this new property - now waiting for fractal-analytics-platform/fractal-web#674