{{{ipaclient.remote_plugins.schema._SchemaPlugin}}} instances are registered as plugins and added to the set of plugins ipalib.api._plugins. The base class does not provide hash and thus uses the default implementation of hash which uses id(self).
ipalib.api._plugins
The default implementation of __eq__ and __hash__ is not well-suited for user defined classes. It assumes that all instances of a class are singletons. In case some code adds a second schema object with the same name and version, we end up with duplicated entries in a set or dict. We are just lucky that we don't have conflicts at the moment. Distinct names are not guaranteed by the design of the schema cache, though.
__eq__
__hash__
Therefore SchemaPlugin should implement __eq__ to only compare equally to other SchemaPlugin instances with same name and version. The hash of SchemaPlugin instances should depend on name and version, too.
https://docs.python.org/3/reference/datamodel.html?highlight=__hash__#object.__hash__
User-defined classes have __eq__() and __hash__() methods by default; with them, all objects compare unequal (except with themselves) and x.__hash__() returns an appropriate value such that x == y implies both that x is y and hash(x) == hash(y).
Metadata Update from @cheimes: - Issue assigned to someone - Issue set to the milestone: Future Releases
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