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

https://github.com/tornaria/void-packages mpfr
https://github.com/void-linux/void-packages/pull/42044

mpfr: update to 4.2.0.
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#### Testing the changes
- I tested the changes in this PR: I have it installed for a few weeks, tested sagemath several times using it.

Cc: @Gottox 

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A patch file from https://github.com/void-linux/void-packages/pull/42044.patch is attached