ci: pin iOS/Mac Catalyst workload set + Xcode version for todoapp-uno ios-maccatalyst build#561
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Samples require platform SDKs/workloads not guaranteed to be available locally. Document the proper validation approach: push the branch to the local fork and trigger the Build Samples workflow via workflow_dispatch, then poll for results. Note that a full run across all samples takes approximately 6 minutes end-to-end, so agents can set correct timing expectations when polling.
… ios-maccatalyst build Fixes CommunityToolkit#559. Applies the same fix as CommunityToolkit#530 (todoapp-avalonia/maui ios jobs) to todoapp-uno's ios-maccatalyst job: dotnet workload install ios maccatalyst was unpinned, resolving the newest Microsoft.iOS.Sdk pack (26.5.10284, requiring Xcode 26.5) which isn't available on macos-latest (currently Xcode 16.4). Pin runs-on to macos-15, explicitly select the already-installed Xcode 26.3, and pin the workload install to workload set 10.0.107 (resolves to Microsoft.iOS.Sdk.net10.0_26.2.10233, which requires Xcode 26.3).
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Summary
Fixes #559.
todoapp-uno / ios-maccatalystcallsdotnet workload install ios maccatalystunpinned, which always resolves the newest published
Microsoft.iOS.Sdk.net10.0_*pack. As of workload set
10.0.108, that's26.5.10284, which requires Xcode26.5 - not installed on
macos-latest(currently Xcode 16.4), causing:This is the same failure class as #529, fixed for
todoapp-avalonia / iosandtodoapp-maui / iosin #530.todoapp-unowas intentionally left out of thatPR (not yet wired into
build-samples.yml, blocked by #506) and was missedonce it was wired in, so
ios-maccatalystkept floating onmacos-latestunpinned.
What changed
todoapp-uno / ios-maccatalystnow:runs-ontomacos-15(instead ofmacos-latest) so the Xcodeversion available on the runner is deterministic, matching the
todoapp-avalonia / iosandtodoapp-maui / iosjobs.sudo xcode-select -s /Applications/Xcode_26.3.app.Xcode 26.3 is already installed on the
macos-15image, just not thedefault (16.4).
10.0.107via
dotnet workload install ios maccatalyst --version 10.0.107, scopedonly to this job's env/steps (not a repo-wide
global.json, for the samereasons documented in ci: pin iOS workload set + Xcode version for todoapp-avalonia/maui iOS builds #530).
10.0.107is the last workload set before theiOS/MacCatalyst/macOS/tvOS manifest moved to the 26.4/26.5 pack line,
resolving to
Microsoft.iOS.Sdk.net10.0_26.2(26.2.10233), which requiresexactly Xcode 26.3.
Both the iOS and Mac Catalyst restore/build steps stay in the single job as
they are today, since both TFMs need the same pinned Xcode/workload set.
No other jobs in
build-samples-todoapp-uno.yml(android,windows,browserwasm,desktop) are touched.Validation
Ran the full
build-samples.ymlviaworkflow_dispatchon this branch twiceto confirm the fix is deterministic, not a flaky pass:
all green,
todoapp-uno / ios-maccatalystin 4m3s.all green,
todoapp-uno / ios-maccatalystin 3m10s.All other jobs (including
todoapp-avalonia / iosandtodoapp-maui / ios,unaffected by this job-scoped change) passed in both runs, confirming no
regression there.
Follow-up
Revisit this job once we deliberately upgrade to a newer, Xcode-26-compatible
workload set, same as the follow-up already called out for the sibling
todoapp-avalonia / iosandtodoapp-maui / iosjobs in #530.