Hello Guix! In case you hadn't taken notice, the core-update-frozen branch was finally merged into master. So please reconfigure your remotes to avoid uploading any further work there :-).
A tentative release preparation branch 'version-1.4.0' was then created from master, where release-specific enhancements can go. Things broken on master as it stands should be fixed there, and we can cherry pick these fixes into the release branch. That's it! Enjoy the latest additions and improvements, and report any issues you encounter! Thank you, Maxim