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--arch option doesn't imply self-contained

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Up until now, the --arch option for dotnet CLI commands such as dotnet publish implied that the app was self-contained. The behavior of the --arch option has now been changed to match that of the --runtime option, and it no longer implies that an app is self-contained.

Previous behavior

--arch implied --self-contained.

New behavior

--arch doesn't imply anything about --self-contained.

Version introduced

.NET 8 RC 2

Type of breaking change

This change is a behavioral change.

Reason for change

This change was made to unify the behavior of --arch with that of --runtime, which it's an alias for. The behavior for --runtime was also changed in .NET 8.

If your application needs to be self contained, set --self-contained on your CLI calls, or set MSBuild properties such as <SelfContained>true</SelfContained> or <PublishSelfContained>true</PublishSelfContained>.

See also