I can't upload a package to Hackage that uses recent extensions: ``` cabal upload --publish /home/gthomas/code/lifx-lan/dist-newstyle/sdist/lifx-lan-0.7.tar.gz Uploading /home/gthomas/code/lifx-lan/dist-newstyle/sdist/lifx-lan-0.7.tar.gz... Error uploading /home/gthomas/code/lifx-lan/dist-newstyle/sdist/lifx-lan-0.7.tar.gz: http code 400 Error: Invalid package Unknown extensions: NoFieldSelectors, OverloadedRecordDot ``` Possibly related to #1016?