[Bug 2122355] Re: [SRU] New upstream microrelease .NET 9.0.110/9.0.9

[Nick Rosbrook]

Hello Dominik, or anyone else affected,

Accepted dotnet9 into plucky-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/dotnet9/9.0.110-9.0.9-0ubuntu1~25.04.1
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
plucky to verification-done-plucky. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-plucky. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: dotnet9 (Ubuntu Plucky)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-plucky

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https://bugs.launchpad.net/bugs/2122355

Title:
  [SRU] New upstream microrelease .NET 9.0.110/9.0.9

Status in dotnet9 package in Ubuntu:
  In Progress
Status in dotnet9 source package in Plucky:
  Fix Committed
Status in dotnet9 source package in Questing:
  In Progress

Bug description:
  This is the tracking bug for the .NET 9 September 2025 release.

  [Impact]

   * This correspond to an upstream microrelease released on September 9th, 2025. See also:
     - .NET blog entry: https://devblogs.microsoft.com/dotnet/dotnet-and-dotnet-framework-september-2025-servicing-updates/
     - release announcement: https://github.com/dotnet/source-build/discussions/5333
     - .NET 9.0.9 Runtime release notes: https://github.com/dotnet/core/blob/main/release-notes/9.0/9.0.9/9.0.9.md
     - .NET 9.0.110 SDK release notes: https://github.com/dotnet/core/blob/main/release-notes/9.0/9.0.9/9.0.110.md
     - .NET 9.0.9 Runtime changes: https://github.com/dotnet/runtime/issues?q=milestone%3A9.0.9%20is%3Aclosed%20label%3Aservicing-approved
     - .NET 9.0.9 ASP.NET Core Runtime changes: https://github.com/dotnet/runtime/issues?q=milestone%3A9.0.9%20is%3Aclosed%20label%3Aservicing-approved

   * It is beneficial for our users to have access to the latest .NET
  stack.

  [Test Case]

   * The package should build successfully in -proposed (respectively).

   * The packages should be installable on plucky, questing on
     amd64, arm64, s390x and ppc64el architectures.

   * Autopackage tests should pass.

  [Regression Potential]

   * The dotnet9 package has no reverse dependencies.

   * The upstream testing routine is usually satisfactory (see for
  example Microsoft's public Azure Pipeline for .NET related
  repositories: https://dev.azure.com/dnceng-public/public/_build), but
  there is always a risk of something breaking

  [Other]

  * The tarball originated from here:
  https://github.com/canonical/dotnet-source-build-
  security/actions/runs/17559116547

  * 9.0.9 is the version number of the .NET Runtime and 9.0.110 is the version
    number of the .NET SDK.

  * We are only building the 9.0.1xx feature band, because this is the only
    feature band that allows building from source. See explanation of feature
    bands: https://learn.microsoft.com/en-us/dotnet/core/releases-and-support#feature-bands-sdk-only

  * Overview of how dotnet is versioned: https://learn.microsoft.com/en-
  us/dotnet/core/versions/

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