There is a new pull request by paper42 against master on the void-packages repository

https://github.com/paper42/void-packages virt-manager-4.1
https://github.com/void-linux/void-packages/pull/39081

virt-manager: update to 4.1.0.
* fixes build with setuptools 61

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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/39081.patch is attached