True, schema upgrades are an issue which hasn't been discussed[1]. Maybe some kind of versioning or pre-update backup in case of non-invertible data upgrade cou

True, schema upgrades are an issue which hasn't been discussed[1]. Maybe some kind of versioning or pre-update backup in case of non-invertible data upgrade could help? [1]: https://discourse.nixos.org/t/automatic-database-schema-updates/5836 https://discourse.nixos.org/t/automatic-database-schema-upda...