Support for "compressed" .framework references to avoid corruption

[mattleibow]

Steps to Reproduce

1. Create a Mac Catalyst .framework
2. Observe that the framework exists with symbolic links.
3. Add it to a NuGet package

Expected Behavior

The framework does not get corrupted.

Another part of the system is that I have to build this framework on macOS, but then I have to build more things on Windows and eventually run a nuget pack on Windows. This means, the framework has to survive uploading and copying on Windows. For example, I noticed that DevOps uploads the framework, but duplicates the files. As a result, this needs to be compressed (by me maybe) on a macOS agent, and then just reference that.

Actual Behavior

The compression of a NuGet uses a compression system that does not preserve symbolic links, causing compiler failures.

Environment

.NET 6

Build Logs

Example Project (If Possible)

[filipnavara]

This is actually NuGet issue so maybe https://github.com/NuGet/Home would be better fit?

[spouliot]

This is actually NuGet issue so maybe https://github.com/NuGet/Home would be better fit?

Agreed. Any workaround will have non negligible impact on build performance.

[mattleibow]

Adding a link to that: NuGet/Home#10893

But I don't think this is a nuget issue. Since this is really an issue with the Windows OS not supporting symbolic links properly, the SDK will have to handle this.

[mattleibow]

Adding a link to another, more generic issue: NuGet/Home#10734

[spouliot]

Since this is really an issue with the Windows OS not supporting symbolic links properly, the SDK will have to handle this.

Recently there was an XML file added to UNIX-like permission could be kept properly.

[spouliot]

We need to verify if macOS (and Catalyst) support [0] the newer "user framework" format that is used by iOS, tvOS and watchOS. Those frameworks are not using symlinks (since they do not have to care about versioning).

If this is supported then the frameworks could be converted to this format - and that would solve the issue.

[0] build time, run time and submissions to App Store

[rolfbjarne]

This has been implemented, we'll automatically zip up any (xc)frameworks with symlinks now.