Edit package metadata for haphviz-0.2.0.1
Package maintainers and Hackage trustees are allowed to edit certain bits of package metadata after a release, without uploading a new tarball. Note that the tarball itself is never changed, just the metadata that is stored separately.
Advice on adjusting version constraints
You can edit the version constraints for the dependencies, either to restrict or relax them. The goal in editing the constraints should always be to make them reflect reality.
If the package is incompatible with or fails to build against certain versions of a dependency then constrain the version.
If the package builds against and works correctly (i.e. is compatible) with a newer version of a dependency then it is ok to relax the constraint
See also the Hackage Trustee's recommendations for managing meta-data