Xcode 26.1 Support

[rolfbjarne]

✅ Checklist

Xcode 26.1

• Create new milestone in GitHub.
• Create a new issue with a copy of this list, assign it to the milestone.

Beta 1

• Update binding status in wiki (read instructions in the Makefile in the wiki's git repository)
• Create a new xcodeX[.Y] branch - this needs deciding where to branch from (which is outside the scope of this document). Push this branch to origin with no changes.
• Create PR with an Xcode bump.
  • Update the following values in Make.versions:
    • *_NUGET_OS_VERSION
  • Update the following values in Make.config:
    • XCODE_VERSION
    • XCODE_URL
    • XCODE_DEVELOPER_ROOT
  • Update the xcodeChannel value in tools/devops/automation/templates/variables/common.yml. Change to Beta if using an Xcode beta or release candidate, and switch back to Stable with the final (stable) Xcode release.
  • Add the new OS versions to the builds/Version-*.plist.in files.
  • Build and fix any issues.
  • Run the following tests locally, and fix any issues (these are the ones that typically fail in Xcode bumps, but there may be other failing tests as well - CI will report any such failures once the PR is created):
    • xtro
    • monotouch-test
    • introspection
    • cecil
    • bgen
• Bind APIs!

Beta 2

• Update binding status in wiki.
• Create PR with an Xcode bump.
  • Build and fix any issues.
  • Run the following tests locally, and fix any issues (these are the ones that typically fail in Xcode bumps, but there may be other failing tests as well - CI will report any such failures once the PR is created):
    • xtro
    • monotouch-test
    • introspection
    • cecil
    • bgen
• Update any existing API bindings PRs if needed.
• Bind APIs!

Beta 3

• Update binding status in wiki.
• Create PR with an Xcode bump.
  • Build and fix any issues.
  • Run the following tests locally, and fix any issues (these are the ones that typically fail in Xcode bumps, but there may be other failing tests as well - CI will report any such failures once the PR is created):
    • xtro
    • monotouch-test
    • introspection
    • cecil
    • bgen
• Update any existing API bindings PRs if needed.
• Bind APIs!

Pre-release process

This happens after the stable version of Xcode has been released and the xcodeX[.Y] branch has been updated according to the previous section(s).

• Make sure all the PRs targeting the xcodeX[.Y] branch have been merged and no more changes are desired for the release.
• Merge the xcodeX[.Y] branch into main.
• Merge main into the target release branch (for instance this was release/9.0.1xx for the Xcode 16.4 release).
• Review the API diff to make sure all api differences are expected.
• Make sure the release branch created packages after the merge and pushed them to maestro.
• Create VS insertion (this may not happen for all releases, sometimes we release only to NuGet).
• Let MAUI know about our new package names, so they can update their darc dependencies. For instance, these dependencies: https://github.com/dotnet/maui/blob/408a1cc69d6a120cafa4e75ae30411f1ec48fa3a/eng/Version.Details.xml#L15-L30 would have to be updated to net9.0_18.5 or net9.0_15.5 for our Xcode 16.4 release.

Release process

• Write release notes.
• Publish NuGets to nuget.org.
• Publish release notes.
• Update https://github.com/dotnet/maui/wiki/Release-Versions
• Update API diff (the STABLE_NUGET_VERSION_* variables in Make.config). Can only be done after the NuGets have been published to nuget.org.
• Update docs by executing docs/sync-mobile-docs.sh. Beware if docs were modified in the docs-mobile repository by somebody else, any such changes will have to be copied back first.
  • https://github.com/dotnet/docs-mobile/pull/90
• Update API / reference docs. See update-api-docs.md for instructions.
  • New monikers: https://dev.azure.com/msft-skilling/Content/_workitems/edit/506430
  • https://github.com/dotnet/macios-api-docs/pull/14
• Make sure all items in the milestone for the current release have been closed.
• Close this issue & close the milestone.
• Wonder about life as you consider the impossibility of actually reaching this point, because you can't close the milestone before all issues have been closed, and you can't close this issue until checking off all items, which you can't do until you've closed the milestone. Decide to schedule yet another viewing of Life of Brian to cope celebrate the release 🍾.

[vhugogarcia]

Thanks @rolfbjarne and @dalexsoto for the work here. I just installed this morning the .NET 10.0.100 workload for MAUI and I get the following error when trying to compile the app:

/usr/local/share/dotnet/packs/Microsoft.iOS.Sdk.net10.0_26.0/26.0.11017/targets/Xamarin.Shared.Sdk.targets(2382,3): error This version of .NET for iOS (26.0.11017) requires Xcode 26.0. The current version of Xcode is 26.1. Either install Xcode 26.0, or use a different version of .NET for iOS.

should I install a different version to support XCode 26.1? thanks in advance

[rolfbjarne]

should I install a different version to support XCode 26.1? thanks in advance

Support for Xcode 26.1 is coming out really soon, we just had to wait until the first .NET 10 release was out.

[vhugogarcia]

thanks @rolfbjarne really appreciate it. 😃

[TedMobile]

same issue here - just for clarity I should not install xcode26.1 yet and revert to 26.0 till 26.1 is out, I must have misread release instructions which says that it supports 26.1 , cool thanks

[rolfbjarne]

Xcode 26.1 support has been released to NuGet (https://github.com/dotnet/macios/releases/tag/dotnet-10.0.1xx-xcode26.1-10494) - but VS support will have to wait a bit (we have to wait for VS to do a service release).

[keegan-gehrig]

Apologies if this was already answered somewhere else, but will .NET 9 eventually support Xcode 26.1 as well? Or will .NET 9 only support up to Xcode 26.0?

[rolfbjarne]

Apologies if this was already answered somewhere else, but will .NET 9 eventually support Xcode 26.1 as well? Or will .NET 9 only support up to Xcode 26.0?

No, at the moment we don't have plans to add support for Xcode 26.1+ to .NET 9.