open-standards/.github/workflows/wai-byte-equality.yml
Transaction Science 1e435c861a toolchain: Rust 1.98.0, and MSRV follows
Latest stable (1.98.0, released 2026-08-18). The pin lives in more places than
is obvious, and missing one means CI silently builds an older compiler than the
dev box:

  - rust-toolchain.toml at the repo root
  - eoc/eoc-rs/rust-toolchain.toml, a second toolchain file
  - five CI workflows that hardcode a version instead of deferring to the file
    (wai-conformance, wai-neural-e2e, wai-byte-equality,
    joule-code-conformance, jouleclaw-public-surface-documented)

standards-build.yml needed no change, because it reads the toolchain file
rather than pinning inline. That is the pattern the other five should adopt.

MSRV raised to 1.98 across 26 manifests, following the earlier decision to have
the declared floor track the pin rather than drift behind it. Note this is a
support-policy change, not a mechanical one: it narrows which compilers can
consume these standards as libraries.

The pin stays exact, never `stable` — a pin that drifts is not a pin.

Co-Authored-By: Claude Opus 4.8 <[email protected]>
2026-08-26 08:33:46 -04:00

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YAML

name: wai cross-architecture byte-equality
# The `replicate` determinism contract, checked on real silicon. WAI claims its
# integer-exact decode paths (rANS entropy coder, integer fixed-point synthesis)
# produce BYTE-IDENTICAL output on every machine. This matrix proves it: five
# OS/arch combinations decode the same fixtures and assert the same golden
# bytes — rANS streams produced by CompressAI's upstream encoder, and an
# int_synth output hash produced on the reference machine (macOS arm64). One
# diverging byte anywhere fails the suite.
#
# The conformance crate (`wai/byte-exact-conformance`) #[path]-includes the
# pure-integer sources from wai-rs — no system codec libraries, no ONNX runtime
# — so every leg runs in about a minute.
on:
pull_request:
paths:
- 'wai/byte-exact-conformance/**'
- 'wai/wai-rs/src/neural/int_synth.rs'
- 'wai/wai-rs/src/neural/jpegai_mans.rs'
- '.github/workflows/wai-byte-equality.yml'
push:
branches:
- main
paths:
- 'wai/byte-exact-conformance/**'
- 'wai/wai-rs/src/neural/int_synth.rs'
- 'wai/wai-rs/src/neural/jpegai_mans.rs'
- '.github/workflows/wai-byte-equality.yml'
jobs:
byte-equality:
name: ${{ matrix.label }}
runs-on: ${{ matrix.os }}
strategy:
fail-fast: false
matrix:
# Self-hosted fleet labels, not GitHub-hosted images. macos-x86_64 is
# dropped: no Intel-Mac runner exists in the fleet, and by the same
# argument the cargo-classes matrix already makes, it adds no arch
# coverage — x86_64 is held by linux-x86_64 and windows-x86_64, arm64
# by linux-aarch64 and the macos-arm64 reference.
include:
- { os: linux, label: linux-x86_64 }
- { os: linux-arm64, label: linux-aarch64 }
- { os: macos, label: macos-arm64 (reference) }
- { os: windows, label: windows-x86_64 }
steps:
- name: Checkout
uses: actions/checkout@v4
# unix: bootstrap rustup (docker image ships no Rust; macOS host has it but
# launchd's PATH omits ~/.cargo/bin). Windows is a host executor with rustup
# already present, and must use pwsh — its `bash` is the WSL stub.
- name: Install Rust 1.98.0 (unix)
if: matrix.os != 'windows'
shell: bash
run: |
export PATH="$HOME/.cargo/bin:$PATH"
command -v rustup >/dev/null 2>&1 || \
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain 1.98.0
rustup toolchain install 1.98.0 --profile minimal
rustup default 1.98.0
echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
- name: Install Rust 1.98.0 (Windows)
if: matrix.os == 'windows'
shell: pwsh
run: |
rustup toolchain install 1.98.0 --profile minimal
rustup default 1.98.0
- name: Decode fixtures, assert golden bytes
working-directory: wai/byte-exact-conformance
run: cargo test --release -- --nocapture