qiskit/releasenotes/notes/0.23/rustworkx-not-retworkx-b7c4...

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---
upgrade:
- |
The ``retworkx`` dependency for Qiskit has been removed and replaced by
``rustworkx`` library. These are the same packages, but ``rustworkx`` is
the new name for ``retworkx`` which was renamed as part of their combined
0.12.0 release. If you were previously using retworkx 0.12.0 with Qiskit
then you already installed rustworkx (retworkx 0.12.0 was just a redirect
shim for backwards compatibility). This change was made to migrate to the
new package name which will be the only supported package in the future.