pluggy

pluggy is the crystallized core of plugin management and hook calling for pytest, powering 1400+ pytest plugins and pytest itself. It provides HookspecMarker and HookimplMarker decorators to define typed hook contracts, a PluginManager to register plugins and dispatch calls, and supports hook ordering (tryfirst/trylast), firstresult short-circuiting, historic hooks, and new-style generator-based hook wrappers. Current stable version is 1.6.0 (released May 15, 2025); releases follow Semantic Versioning with breaking changes reserved for major version bumps.