Change the default generator used in the %cmake macro from make to ninja. Affected projects are tracked in this copr repo, please check if your packages are failing there.

• Change proposal
• devel-announce post
• Discourse discussion
• Owners: @lecris

Owners, do not implement this work until the FESCo vote has explicitly ended.
The Fedora Program Manager will create a tracking bug in Bugzilla for this Change, which is your indication to proceed. See the FESCo ticket policy and the Changes policy for more information.

REMINDER: This ticket is for FESCo members to vote on the proposal. Further discussion should happen in the Discourse discussion linked above. Additional discussion may happen on the Fedora Devel mailing list.