Hi everyone, Hadrian is now merged into the GHC tree. For better or worse, due to the large number of merge commits in the Hadrian repository we were unable to squash the early history of the project. If you encounter trouble using the Hadrian build system please file a ticket on Trac, setting the "Component" field to "Build System (Hadrian)". I have renamed the old "Build System" component in Trac's issue tracker to "Build System (make)" to avoid confusion. Hadrian tickets opened before the merge will remain on GitHub. Likewise, if you would like to contribute to Hadrian please do so via Phabricator. The remaining pull requests against the GitHub repository will be merged in due course but further requests will be redirected to Phabricator. Cheers, - Ben