dotnet pack on maccatalyst with Release config misconfigures search path for files

[Forgind]

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Issue moved from dotnet/sdk#48041

• Please respond to @tuanchien.

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From @tuanchien on Monday, March 31, 2025 9:51:15 PM

Describe the bug

On dotnet 9.0.202 sdk, when attempting to create a nuget package with the dotnet cli command
dotnet pack for a maccatalyst project built with the Release config, it errors out failing to find the runtimeconfig.json file.

  testnuget failed with 1 error(s) (0.1s)
    /usr/local/share/dotnet/sdk/9.0.202/Sdks/NuGet.Build.Tasks.Pack/buildCrossTargeting/NuGet.Build.Tasks.Pack.targets(221,5): error NU5026: The file '/Users/user/testnuget/bin/Release/net9.0-maccatalyst/testnuget.runtimeconfig.json' to be packed was not found on disk.

The maccatalyst build produces two directories

/Users/user/testnuget/bin/Release/net9.0-maccatalyst/maccatalyst-x64

and

/Users/user/testnuget/bin/Release/net9.0-maccatalyst/maccatalyst-arm64

both of which contain runtimeconfig.json files so it appears the pack command is not accounting for the different runtime targets. Further evidence of this: if you copy the runtimeconfig file to the location the cli tool is expecting it to be, it will error out looking for the next file (the .dll assembly).

To Reproduce

1. Create a template app with dotnet new maui
2. Optionally disable all other target frameworks other than net9.0-maccatalyst in the .csproj (to speed up testing).
3. Run dotnet build -c Release
4. Run dotnet pack

The debug build does not exhibit this problem, but it also only generates maccatalyst-arm64 instead of both x86_64 and arm64 like the release build does.

Exceptions (if any)

Further technical details

Primarily tested on mac with the following dotnet details. Quickly tested on the windows dotnet sdk, and it exhibits similar behaviour.

% dotnet --list-sdks
9.0.202 [/usr/local/share/dotnet/sdk]
tuan@michelangelo testnuget % dotnet --info
.NET SDK:
 Version:           9.0.202
 Commit:            3a53853c30
 Workload version:  9.0.200-manifests.5c4e24dc
 MSBuild version:   17.13.13+1c2026462

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  15.3
 OS Platform: Darwin
 RID:         osx-arm64
 Base Path:   /usr/local/share/dotnet/sdk/9.0.202/

.NET workloads installed:
 [maui-ios]
   Installation Source: SDK 9.0.200
   Manifest Version:    9.0.14/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.maui/9.0.14/WorkloadManifest.json
   Install Type:        FileBased

 [ios]
   Installation Source: SDK 9.0.200
   Manifest Version:    18.2.9180/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.ios/18.2.9180/WorkloadManifest.json
   Install Type:        FileBased

 [maccatalyst]
   Installation Source: SDK 9.0.200
   Manifest Version:    18.2.9180/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.maccatalyst/18.2.9180/WorkloadManifest.json
   Install Type:        FileBased

 [maui]
   Installation Source: SDK 9.0.200
   Manifest Version:    9.0.14/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.maui/9.0.14/WorkloadManifest.json
   Install Type:        FileBased

Configured to use loose manifests when installing new manifests.

Host:
  Version:      9.0.3
  Architecture: arm64
  Commit:       831d23e561

.NET SDKs installed:
  9.0.202 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 9.0.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 9.0.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
  None

Environment variables:
  Not set

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

[Forgind]

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Issue moved from dotnet/sdk#48041

• Please respond to @Forgind.

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From @Forgind on Tuesday, April 8, 2025 12:21:01 AM

This is a clean report, thanks.

It seems to be failing on line 221 of NuGet.Build.Tasks.Pack.targets, which corresponds to a call to the PackTask. The SDK doesn't pass in the runtimeconfig.json path, so I'm assuming that's calculated somewhere in the Pack logic. (10 minutes of trying to find it yielded...that PackTask is complicated 🙂) Moving this over to NuGet to take a look.

[microsoft-github-policy-service]

Issue is missing Type label, remember to add a Type label

[tuanchien]

Appreciate you taking a look. Thanks :)

[Nigusu-Allehu]

Error indicates the file was not found in \bin\Release\net9.0-maccatalyst\project.runtimeconfig.json However, the files are in \bin\Release\net9.0-maccatalyst\maccatalyst-x64\project.runtimeconfig.json and \bin\Release\net9.0-maccatalyst\maccatalyst-arm64\project.runtimeconfig.json instead