deprecate "installer.modern-installation false" #8988
Merged
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As proposed at #8987
I started with
warnings.warn
but something about all the cleo io cleverness results in those messages disappearing. Anyway this deprecation is more user-facing than developer-facing, so regular warning output is probably fine.I'd be happy to see this deprecation in the upcoming release, might as well get it out there and see who squeals. But no big deal if it misses the cut.