There is an updated pull request by oreo639 against master on the void-packages repository

https://github.com/oreo639/void-packages gnac
https://github.com/void-linux/void-packages/pull/38870

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

Also unmaintained, last release was in 2012.

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A patch file from https://github.com/void-linux/void-packages/pull/38870.patch is attached