There is an updated pull request by JamiKettunen against master on the void-packages repository https://github.com/JamiKettunen/void-packages json-c++-tests https://github.com/void-linux/void-packages/pull/37291 json-c++: run all tests that don't require a git checkout Running the unit tests (including without a git checkout) [is documented here](https://github.com/nlohmann/json#execute-unit-tests). I've also disabled building the test binaries if cross-building (they won't be run by `xbps-src` anyway) or when `XBPS_CHECK_PKGS` is not set. #### Testing the changes - I tested the changes in this PR: **briefly** A patch file from https://github.com/void-linux/void-packages/pull/37291.patch is attached