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ce57f12940
This is currently the status quo as per discussion in the NixOS Security Discussions channel. Let's state it clearly to avoid people being surprised.
47 lines
7.4 KiB
Markdown
47 lines
7.4 KiB
Markdown
# Platform Support {#chap-platform-support}
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Packages receive varying degrees of support, both in terms of maintainer and security team attention and available computation resources for continuous integration (CI). We have 7 defined tiers denoting how well supported each platform is.
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## Tiers {#sec-platform-tiers}
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### Tier 1 {#sec-platform-tier1}
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[Tier 1](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-1) platforms receive the highest level of support where problems can block updates, security fixes are treated with urgency, platform-specific patches are freely applied, and most packages are expected to work.
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### Tier 2 {#sec-platform-tier2}
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[Tier 2](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-2) platforms are expected to remain functional and secure with updates, receive platform-specific patches as needed, and have many packages built by Hydra with full ofBorg support.
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### Tier 3 {#sec-platform-tier3}
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[Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) platforms may receive non-intrusive platform-specific fixes, have native bootstrap tools available with cross-build toolchains in binary cache, but updates might break builds on these platforms.
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### Tier 4-7 {#sec-platform-tier4-7}
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Platform Tiers [4 through 7](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-4) indicate varying levels of minimal support going from receiving only limited fixes to platforms with no support, but a path to support.
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## Breakdown {#sec-platform-breakdown}
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| Triple | Support Tier | Channel Blockers | Hydra Support | Security Support | Ofborg Support | Bootstrap Tarballs | Cross Compiling Support |
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|---------------------------------------|------------------------------------------------------------------------------------------------|------------------|---------------|------------------|----------------|--------------------|-------------------------|
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| `x86_64-unknown-linux-gnu` | [Tier 1](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-1) | Many | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
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| `aarch64-unknown-linux-gnu` | [Tier 2](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-2) | Some | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
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| `x86_64-unknown-linux-musl` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | Limited | ❌ | ❌ | ✔️ | ✔️ |
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| `aarch64-unknown-linux-musl` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | Limited | ❌ | ❌ | ✔️ | ✔️ |
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| `x86_64-unknown-unknown-freebsd` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `arm64-apple-darwin` | [Tier 2](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-2) | Some | ✔️ | ✔️ | ✔️ | ✔️ | ❌ |
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| `i686-unknown-linux-gnu` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | Limited | ❌ | ❌ | ✔️ | ✔️ |
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| `riscv32-unknown-linux-gnu` | [Tier 4](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-4) | None | ❌ | ❌ | ❌ | ❌ | ✔️ |
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| `riscv64-unknown-linux-gnu` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `loongarch64-unknown-linux-gnu` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `armv6l-unknown-linux-gnueabihf` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `armv6l-unknown-linux-musleabihf` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `armv7l-unknown-linux-gnueabihf` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `armv5tel-unknown-linux-gnueabi` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `mips64el-unknown-linux-gnuabi64` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `mips64el-unknown-linux-gnuabin32` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `mipsel-unknown-linux-gnu` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `powerpc64-unknown-linux-gnuabielfv2` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `powerpc64le-unknown-linux-gnu` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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| `s390x-unknown-linux-gnu` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌ | ❌ | ❌ | ✔️ | ✔️ |
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