There is an updated pull request by TinfoilSubmarine against master on the void-packages repository

https://github.com/TinfoilSubmarine/void-packages py7zr
https://github.com/void-linux/void-packages/pull/36538

python3-py7zr: update to 0.18.3.
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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/36538.patch is attached