perm-rs
Copyright 2026 Harry Bromley

This product includes a Rust reimplementation derived from XanaduAI/thewalrus, 
specifically:
  thewalrus/thewalrus/_permanent.py
  https://github.com/XanaduAI/thewalrus

Original copyright:
  Copyright 2019 Xanadu Quantum Technologies Inc.

The original work is licensed under the Apache License, Version 2.0.
A copy of that licence is provided in LICENSE-APACHE.