qiskit/releasenotes/notes/1.0/vf2postlayout-no-better-sol...

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features_transpiler:
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:class:`.VF2PostLayout` now distinguishes between 'no solution' and 'no better solution' when
determining a :class:`.Layout` for a given quantum circuit. 'no better solution' is set when the
initial layout of a quantum circuit is also the optimal one, i.e. incurs the least cost in terms of
error rates.