This came up in https://github.com/backdrop/backdrop-issues/issues/570#issuecomment-1848... and is related to #678.
We need a way for modules to communicate to the user what they are used for in their website before they are completely uninstalled. A good place would be the uninstallation confirmation page/dialog.
GitHub Issue #:
1624
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I don't think this answers your question, but it might help someone with a related question. The layout template for any given layout is stored in config and you can programmatically...
How to programmatically change layout?
perfect, thank you
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