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build: source resolute toolchain from rustc-release PPA and pin vendor_rust to 1.96.0 #232

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Merged
inureyes merged 1 commit into from
Jul 19, 2026
Merged

build: source resolute toolchain from rustc-release PPA and pin vendor_rust to 1.96.0 #232

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8 changes: 4 additions & 4 deletions .github/workflows/launchpad_ppa.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -25,14 +25,14 @@ jobs:
matrix:
include:
- distro: jammy
vendor_rust: "1.96.1"
vendor_rust: "1.96.0"
toolchain_source: "Requires backend-ai PPA dependency on ~lablup/+archive/ubuntu/rustc-release"
- distro: noble
vendor_rust: "1.96.1"
vendor_rust: "1.96.0"
toolchain_source: "Requires backend-ai PPA dependency on ~lablup/+archive/ubuntu/rustc-release"
- distro: resolute
vendor_rust: "1.96.1"
toolchain_source: "Uses the official Ubuntu 26.04 archive Rust 1.96+ toolchain"
vendor_rust: "1.96.0"
toolchain_source: "Requires backend-ai PPA dependency on ~lablup/+archive/ubuntu/rustc-release"

steps:
- name: Checkout code
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6 changes: 3 additions & 3 deletions debian/README.packaging
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Expand Up @@ -19,10 +19,10 @@ The following packages are required and must be available to Launchpad through t
This project currently requires Rust 1.96 or newer because the vendored dependency set no longer builds with Rust 1.85. This means:
- Ubuntu 22.04 (Jammy): requires a versioned Rust 1.96 toolchain from the dependent PPA `~lablup/+archive/ubuntu/rustc-release`
- Ubuntu 24.04 (Noble): requires a versioned Rust 1.96 toolchain from the dependent PPA `~lablup/+archive/ubuntu/rustc-release`
- Ubuntu 26.04 (Resolute): can use the archive's Rust 1.96+ toolchain without the extra dependency PPA
- Ubuntu 26.04 (Resolute): requires a versioned Rust 1.96 toolchain from the dependent PPA `~lablup/+archive/ubuntu/rustc-release`

If building for older Ubuntu versions, you may need to:
1. Add a Launchpad PPA dependency on `~lablup/+archive/ubuntu/rustc-release` so Jammy and Noble can see `rustc-1.96` and `cargo-1.96`
1. Add a Launchpad PPA dependency on `~lablup/+archive/ubuntu/rustc-release` so Jammy, Noble, and Resolute can see `rustc-1.96` and `cargo-1.96`
2. Limit support to distributions with Rust 1.96+

### Build Process
Expand All @@ -37,7 +37,7 @@ If the build fails on Launchpad:
2. Common issues:
- Missing build dependencies: Add them to debian/control
- Rust version incompatibility: Ensure Rust 1.96+ is available
- Missing PPA dependency: Jammy/Noble need access to `rustc-1.96` and `cargo-1.96`
- Missing PPA dependency: Jammy/Noble/Resolute need access to `rustc-1.96` and `cargo-1.96`
- Missing vendored crates: Ensure `vendor/` and `.cargo/config.toml` are included in the source package
- Cargo registry access: The build will fail if it tries to download crates

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