1# Platform Support {#chap-platform-support} 2 3Packages receive varying degrees of support, both in terms of maintainer attention and available computation resources for continuous integration (CI). 4 5Below is the list of the best supported platforms: 6 7- `x86_64-linux`: Highest level of support. 8- `aarch64-linux`: Well supported, with most packages building successfully in CI. 9- `aarch64-darwin`: Receives better support than `x86_64-darwin`. 10- `x86_64-darwin`: Receives some support. 11 12There are many other platforms with varying levels of support. 13The provisional platform list in [Appendix A] of [RFC046], while not up to date, can be used as guidance. 14 15A more formal definition of the platform support tiers is provided in [RFC046], but has not been fully implemented yet. 16 17[RFC046]: https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md 18[Appendix A]: https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#appendix-a-non-normative-description-of-platforms-in-november-2019