Register plugins through entry points

Have you considered making plugins able to be registered through the entry point system?

The plugin author could simply add something like the following to pyproject.toml:

[project.entry-points."snakemake.logger"]
mylogger = "mypackage.pluginmodule:LogHandler"

This would not require the package to have a specific name/structure and would also work with editable installs, making development easier.

I'd be happy to contribute a PR if people think it would be a good feature.

I think this is a good idea. But, it would have to likely work alongside the existing system, to make time for migration for all plugins.

Implemented in #87

Here are some of the possible advantages of using the entry point system:

Makes development easier by supporting editable installs.
Allows you to put the plugin contents in a submodule instead of requiring it be at the root of the package, which is useful if your package also does other things.
Less restrictive if you're developing an extension for private use (or if it's in the early stages, before you have to choose an "official" name).

The explicit naming could still be required for plugins that are listed in the official registry.

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