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Maui and Grpc cannot work together on MacOS?

See original GitHub issue

Description

Hi, using asp and maui in a single project results in “unsupported” runtime error message.

Questions:

why I get this error? Isn’t grpc supposed to be independent from maui? Grpc itself is supported under Windows, Linux and MacOS.
how to fix it?

I have created similar issue on Community Hub long time ago, no answer till now: https://techcommunity.microsoft.com/t5/app-development/maui-and-grpc-cannot-work-together-on-macos/m-p/3046251

Steps to Reproduce

create a standard maui project (from template).
remove iOS and Android from TargetFrameworks. Only windows and MacCatalyst shall stay (I want to build a cross platform desktop app). <TargetFrameworks>net6.0-maccatalyst</TargetFrameworks> <TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows')) and '$(MSBuildRuntimeType)' == 'Full'">$(TargetFrameworks);net6.0-windows10.0.19041</TargetFrameworks>
add grpc nuget reference to the project <PackageReference Include="Grpc.AspNetCore" Version="2.41.0" />
build the project. Following error will be displayed: 1>C:\Program Files\dotnet\sdk\6.0.100\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(427,5): error NETSDK1082: There was no runtime pack for Microsoft.AspNetCore.App available for the specified RuntimeIdentifier ‘maccatalyst-x64’.

Version with bug

Release Candidate 1 (current)

Last version that worked well

Unknown/Other

Affected platforms

macOS

Affected platform versions

MacCatalyst

Did you find any workaround?

Relevant log output

No response

Issue Analytics

State:
Created a year ago
Comments:9 (3 by maintainers)

Top GitHub Comments

1reaction

kucintcommented, May 19, 2022

@Falco20019 I have built a test application from scratch, that simulates my problem. I have to admit that the problem is gone (at least partially).

MAUI app referencing grpc client in a second library -> builds and works as expected.
MAUI app directly referencing grpc in the same project -> causes some build problems that I do not understand.

Anyway, I have a “work around” that functions. Now I have to find why my production app fails and where the undesired reference comes from.

Thanks for your very appreciated help! Best.

1reaction

Eiloncommented, May 18, 2022

@Falco20019 the runtime pack that is chosen depends on what runtime the code ends up running on. I do think that net6.0-maccatalyst is different from net6.0-macos, so if something is compatible with ‘macos’ then it won’t automatically run on ‘maccatalyst’.