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

stack: update to 2.3.1
https://github.com/void-linux/void-packages/pull/22377

Description:
Using "cabal update 'hackage.haskell.org,2020-04-29T20:25:58Z'" to
stick to the successful build report on hackage. In this case:
https://hackage.haskell.org/package/stack-2.3.1/reports/1
[ci skip]