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

https://github.com/tornaria/void-packages sagemath
https://github.com/void-linux/void-packages/pull/47712

[beta] sagemath: update to 10.3.beta7.
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PR for tracking sagemath beta/rc until 10.3 is released.

#### Testing the changes
- I tested the changes in this PR: **briefly**

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A patch file from https://github.com/void-linux/void-packages/pull/47712.patch is attached