There's a closed pull request on the void-packages repository

WIP: julia: update to 1.7.1.
https://github.com/void-linux/void-packages/pull/35270

Description:
Still need to finish building/testing locally and separating out into logical commits, but I thought I should put this here to make sure there's no duplicated effort since I'm not sure when I'll finish this up, and libblastrampoline was annoying to get to build correctly.

[ci skip] for building llvm.

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