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## Why `rust-ci-full` was paying the full Cargo nextest build-and-run cost once per platform, with Windows ARM64 as the long pole. This change moves the heavy work into one reusable per-platform flow: build a nextest archive once, then replay it across four shards so the platform lane spends less time running tests serially. For Windows ARM64, the archive is cross-compiled on Windows x64 and replayed on native Windows ARM64 shards so the slow ARM64 machine is used for execution rather than compilation. ## What changed - split the `rust-ci-full` nextest matrix into five explicit per-platform reusable-workflow calls - add `.github/workflows/rust-ci-full-nextest-platform.yml` to build one archive, upload timings/helpers, replay four nextest shards, upload per-shard JUnit, and roll the shard status back up per platform - add Windows CI helpers for Dev Drive setup and MSVC ARM64 linker environment export so the Windows ARM64 archive can be produced on Windows x64 - keep the existing Cargo git CLI fetch hardening inside the reusable workflow, since caller workflow-level `env` does not flow through `workflow_call` - document the archive-backed shard shape in `.github/workflows/README.md` - raise the default nextest slow timeout to 30s so the sharded full-CI path does not treat every >15s test as stuck ## Verification - validated the archive/shard flow with live GitHub Actions runs on this PR branch - Windows ARM64 cross-compile latency on completed runs: - https://github.com/openai/codex/actions/runs/26118759651: `34m30s` lane e2e, `17m16s` archive build, `9m55s` shard phase - https://github.com/openai/codex/actions/runs/26120777976: `30m36s` lane e2e, `17m21s` archive build, `6m50s` shard phase - comparable pre-cross-compile sharded Windows ARM64 runs were `55m01s`, `50m21s`, and `46m42s`, so the completed cross-compile runs improved the lane by roughly `12m` to `24m` versus the prior range - latest corrected cross-compile run: https://github.com/openai/codex/actions/runs/26120777976 - Windows ARM64 archive built successfully on Windows x64 - native Windows ARM64 shards started immediately after the archive upload - 3/4 Windows ARM64 shards passed; the failing shard hit the same existing `code_mode` test failure seen outside this lane - downloaded failed-shard JUnit XML from the validation runs and confirmed the remaining red is from known test failures, not archive/shard wiring - no local Codex tests run per repo guidance ## Notes - this PR does not change developers.openai.com documentation
63 lines
2.1 KiB
PowerShell
63 lines
2.1 KiB
PowerShell
# Configure a fast drive for Windows CI jobs.
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#
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# GitHub-hosted Windows runners do not always expose a secondary D: volume. When
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# they do not, try to create a Dev Drive VHD and fall back to C: if the runner
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# image does not allow that provisioning path.
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function Use-FallbackDrive {
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param([string]$Reason)
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Write-Warning "$Reason Falling back to C:"
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return "C:"
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}
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function Invoke-BestEffort {
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param([scriptblock]$Script, [string]$Description)
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try {
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& $Script
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} catch {
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Write-Warning "$Description failed: $($_.Exception.Message)"
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}
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}
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if (Test-Path "D:\") {
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Write-Output "Using existing drive at D:"
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$Drive = "D:"
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} else {
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try {
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$VhdPath = Join-Path $env:RUNNER_TEMP "codex-dev-drive.vhdx"
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$SizeBytes = 64GB
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if (Test-Path $VhdPath) {
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Remove-Item -Path $VhdPath -Force
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}
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New-VHD -Path $VhdPath -SizeBytes $SizeBytes -Dynamic -ErrorAction Stop | Out-Null
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$Mounted = Mount-VHD -Path $VhdPath -Passthru -ErrorAction Stop
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$Disk = $Mounted | Get-Disk -ErrorAction Stop
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$Disk | Initialize-Disk -PartitionStyle GPT -ErrorAction Stop
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$Partition = $Disk | New-Partition -AssignDriveLetter -UseMaximumSize -ErrorAction Stop
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$Volume = $Partition | Format-Volume -FileSystem ReFS -NewFileSystemLabel "CodexDevDrive" -DevDrive -Confirm:$false -Force -ErrorAction Stop
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$Drive = "$($Volume.DriveLetter):"
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Invoke-BestEffort { fsutil devdrv trust $Drive } "Trusting Dev Drive $Drive"
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Invoke-BestEffort { fsutil devdrv enable /disallowAv } "Disabling AV filter attachment for Dev Drives"
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Invoke-BestEffort { fsutil devdrv query $Drive } "Querying Dev Drive $Drive"
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Write-Output "Using Dev Drive at $Drive"
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} catch {
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$Drive = Use-FallbackDrive "Failed to create Dev Drive: $($_.Exception.Message)"
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}
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}
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$Tmp = "$Drive\codex-tmp"
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New-Item -Path $Tmp -ItemType Directory -Force | Out-Null
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@(
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"DEV_DRIVE=$Drive"
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"TMP=$Tmp"
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"TEMP=$Tmp"
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) | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
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