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Variants aims to facilitate the setup and usage of multiple deployment variants for a mobile application (iOS and Android) while also providing a fully working and rich Fastlane setup, with opt-in features for your pipelines. While achieving these goals, it also reduces the amount of sources of truth in your configuration, by relying only on the Variants Spec - a YAML configuration file generated by variants init.
Variants spec - by default located at ./variants.yml, relative to your project's base folder - becomes the sole source of truth and the main configuration file for your needs.
This file is responsible for:
- Specifying how many deployment variants you desire for this project and the differences between these variants (Name, Icon, Identifier, Version, and more with Custom Properties);
- Which store do you want Fastlane to deploy each variant to;
- Signing configuration, in case they differ per variant.
- Custom properties. Both global (applies to all) and variant specific (overrides global). Custom properties have different destinations, so that certain properties aren't available to Fastlane but to Project and vice-versa. These can also be sourced from environment variables, perfect for secrets and tokens.