There is a new pull request by pandom79 against master on the void-packages repository

https://github.com/pandom79/void-packages armadillo
https://github.com/void-linux/void-packages/pull/25621

armadillo : update to 10.1.0
Required by hdf5 package

A patch file from https://github.com/void-linux/void-packages/pull/25621.patch is attached