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It is occasionally necessary for Home Manager to change configuration defaults in a way that is incompatible with stateful data. This could, for example, include switching the default data format or location of a file.

The state version indicates which default settings are in effect and will therefore help avoid breaking program configurations. Switching to a higher state version typically requires performing some manual steps, such as data conversion or moving files.

one of "18.09", "19.03", "19.09", "20.03", "20.09", "21.03", "21.05", "21.11", "22.05", "22.11", "23.05", "23.11", "24.05", "24.11"