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[msbuild] Fix getting an x64 simulator if asked to build for x64.#25614

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rolfbjarne merged 3 commits into
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dev/rolf/msbuild-fix-getting-x64sims
Jun 4, 2026
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[msbuild] Fix getting an x64 simulator if asked to build for x64.#25614
rolfbjarne merged 3 commits into
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dev/rolf/msbuild-fix-getting-x64sims

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@rolfbjarne rolfbjarne requested a review from mauroa as a code owner June 2, 2026 12:35
Copilot AI review requested due to automatic review settings June 2, 2026 12:35

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Pull request overview

Adjusts the GetAvailableDevices MSBuild task so that simulator device selection respects an explicitly requested RuntimeIdentifier (notably enabling correct x64 simulator selection when the build is targeting x64), instead of always preferring the host’s “best” simulator architecture.

Changes:

  • When a simulator device reports multiple runtime identifiers (arm64 + x64), prefer the task’s RuntimeIdentifier value if provided.
  • Otherwise, keep the existing host-architecture-based selection (CanRunArm64) for simulator runtime identifier metadata.

Comment on lines +105 to +109
if (!string.IsNullOrEmpty (RuntimeIdentifier)) {
d.Item.SetMetadata ("RuntimeIdentifier", RuntimeIdentifier);
} else {
d.Item.SetMetadata ("RuntimeIdentifier", d.RuntimeIdentifiers.Single (v => v.Contains ("arm64") == CanRunArm64));
}
… and multi-arch simulators.

Add a test that verifies the behavior when RuntimeIdentifier is set on the
task and the simulator runtime supports both arm64 and x64 architectures.
This covers the fix from the previous commit where setting RuntimeIdentifier
explicitly selects the correct RID for multi-arch simulators.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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/azp run

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Azure Pipelines successfully started running 3 pipeline(s).

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/azp run

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Azure Pipelines successfully started running 3 pipeline(s).

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✅ [PR Build #45d47cf] Build passed (Detect API changes) ✅

Pipeline on Agent
Hash: 45d47cfa0465f9162e21fc2847deb58d0d96e337 [PR build]

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✅ [PR Build #45d47cf] Build passed (Build packages) ✅

Pipeline on Agent
Hash: 45d47cfa0465f9162e21fc2847deb58d0d96e337 [PR build]

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✅ API diff for current PR / commit

NET (empty diffs)

✅ API diff vs stable

NET (empty diffs)

ℹ️ Generator diff

Generator Diff: vsdrops (html) vsdrops (raw diff) gist (raw diff) - Please review changes)

Pipeline on Agent
Hash: 45d47cfa0465f9162e21fc2847deb58d0d96e337 [PR build]

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✅ [PR Build #45d47cf] Build passed (Build macOS tests) ✅

Pipeline on Agent
Hash: 45d47cfa0465f9162e21fc2847deb58d0d96e337 [PR build]

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🚀 [CI Build #45d47cf] Test results 🚀

Test results

✅ All tests passed on VSTS: test results.

🎉 All 193 tests passed 🎉

Tests counts

✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (iOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (MacCatalyst): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (macOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (Multiple platforms): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (tvOS): All 1 tests passed. Html Report (VSDrops) Download
✅ framework: All 2 tests passed. Html Report (VSDrops) Download
✅ fsharp: All 4 tests passed. Html Report (VSDrops) Download
✅ generator: All 5 tests passed. Html Report (VSDrops) Download
✅ interdependent-binding-projects: All 4 tests passed. Html Report (VSDrops) Download
✅ introspection: All 6 tests passed. Html Report (VSDrops) Download
✅ linker (iOS): All 11 tests passed. Html Report (VSDrops) Download
✅ linker (MacCatalyst): All 11 tests passed. Html Report (VSDrops) Download
✅ linker (macOS): All 11 tests passed. Html Report (VSDrops) Download
✅ linker (tvOS): All 11 tests passed. Html Report (VSDrops) Download
✅ monotouch (iOS): All 20 tests passed. Html Report (VSDrops) Download
✅ monotouch (MacCatalyst): All 23 tests passed. Html Report (VSDrops) Download
✅ monotouch (macOS): All 23 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ monotouch (tvOS): All 20 tests passed. Html Report (VSDrops) Download
✅ msbuild: All 2 tests passed. Html Report (VSDrops) Download
✅ sharpie: All 1 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ windows: All 3 tests passed. Html Report (VSDrops) Download
✅ xcframework: All 4 tests passed. Html Report (VSDrops) Download
✅ xtro: All 1 tests passed. Html Report (VSDrops) Download

macOS tests

✅ Tests on macOS Monterey (12): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Ventura (13): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Sonoma (14): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Sequoia (15): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Tahoe (26): All 5 tests passed. Html Report (VSDrops) Download

Linux Build Verification

Linux build succeeded

Pipeline on Agent
Hash: 45d47cfa0465f9162e21fc2847deb58d0d96e337 [PR build]

@rolfbjarne rolfbjarne enabled auto-merge (squash) June 4, 2026 16:14
@rolfbjarne rolfbjarne merged commit 72081d0 into main Jun 4, 2026
55 checks passed
@rolfbjarne rolfbjarne deleted the dev/rolf/msbuild-fix-getting-x64sims branch June 4, 2026 16:14
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