UPGRADING.md

Upgrade Guide

This document describes breaking changes and how to upgrade. For a complete list of changes including minor and patch releases, please refer to the changelog.

Unreleased

1.1.0

Explicit Catalyst plugin loading

Catalyst 0.15.0 migrated apply_pass() to PennyLane's standard transform API. It no longer resolves the catalyst.passes_resolution entry point via name2pass().

Pass the plugin path explicitly to qml.qjit() instead:

import pennylane as qml

from mqt.core.plugins.catalyst import get_catalyst_plugin_abs_path

plugin_path = str(get_catalyst_plugin_abs_path())


@qml.qjit(pass_plugins={plugin_path}, dialect_plugins={plugin_path})
def module():
    return circuit()