Readers and VOD calculators from other packages are plugins, registered through entry points¶

A package adds a reader or a VOD calculator to canvodpy run by declaring an entry point (canvodpy.readers, canvodpy.vod_calculators); the entry point's name is the name in the settings and on the command line. Plugins must inherit the abstract base class, and are imported and checked when canvodpy is imported, so a broken plugin fails at once with its package's name instead of in the middle of a run. A name that clashes with a built-in or another plugin is an error, and reader_format: auto never picks a plugin.

Considered options¶

Registering classes in Python code (ReaderFactory.register) still works inside one Python session, but cannot reach canvodpy run, which starts its own process.