Hiera-json is in end-of-life
As of the release of Hiera 1.1.0, hiera-json has been incorporated into the hiera codebase. The standalone hiera-json is only needed for releases of Hiera prior to 1.1.0, which are all in bug-fix only mode. The 1.x branch is for those older versions of hiera and is only open for urgent bug-fixes. However, do not submit fixes against this repository.
What do I do with bugs?
File bugs for hiera-json against hiera itself and submit patches as pull requests against hiera as well.