dotnet install does not create signed apphost on macOS Arm64

Here’s my experience with dotnet-serve.

Problems:

• I had to code sign the apphost.
• An Arm64 apphost was generated. Should be x64, given that the best asset is net5.0, which can only ever be x64 on macOS Arm64.

rich@MacBook-Air-M1-2020 app % dotnet tool install -g dotnet-serve
You can invoke the tool using the following command: dotnet-serve
Tool 'dotnet-serve' (version '1.8.34') was successfully installed.
rich@MacBook-Air-M1-2020 app % dotnet-serve
zsh: killed     dotnet-serve
rich@MacBook-Air-M1-2020 app % codesign -s - ~/.dotnet/tools/dotnet-serve
rich@MacBook-Air-M1-2020 app % dotnet-serve                            
It was not possible to find any compatible framework version
The framework 'Microsoft.AspNetCore.App', version '5.0.0' (arm64) was not found.
  - The following frameworks were found:
      6.0.0-rc.2.21470.37 at [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]

You can resolve the problem by installing the specified framework and/or SDK.

The specified framework can be found at:
  - https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=5.0.0&arch=arm64&rid=osx.11.1-arm64

This is the same thing, but happens to work because the tool enable roll-forward. It demonstrates the same problem but slightly differently symptoms. Just like dotnet-serve, dotnet-runtimeinfo should be installed as x64 because it is pre .NET 6 (at least for macOS).

rich@MacBook-Air-M1-2020 dotnet-runtimeinfo % dotnet tool install -g dotnet-runtimeinfo  
You can invoke the tool using the following command: dotnet-runtimeinfo
Tool 'dotnet-runtimeinfo' (version '1.0.5') was successfully installed.
rich@MacBook-Air-M1-2020 dotnet-runtimeinfo % dotnet-runtimeinfo
zsh: killed     dotnet-runtimeinfo
rich@MacBook-Air-M1-2020 dotnet-runtimeinfo % codesign -s - ~/.dotnet/tools/dotnet-runtimeinfo 
rich@MacBook-Air-M1-2020 dotnet-runtimeinfo % dotnet-runtimeinfo
         42
         42              ,d                             ,d
         42              42                             42
 ,adPPYb,42  ,adPPYba, MM42MMM 8b,dPPYba,   ,adPPYba, MM42MMM
a8"    `Y42 a8"     "8a  42    42P'   `"8a a8P_____42   42
8b       42 8b       d8  42    42       42 8PP"""""""   42
"8a,   ,d42 "8a,   ,a8"  42,   42       42 "8b,   ,aa   42,
 `"8bbdP"Y8  `"YbbdP"'   "Y428 42       42  `"Ybbd8"'   "Y428

**.NET information
Version: 6.0.0
FrameworkDescription: .NET 6.0.0-rc.2.21470.23
Libraries version: 6.0.0-rc.2.21470.23
Libraries hash: 826f81a11ad17f415668fe1cb934bdaf00d36ea2

**Environment information
ProcessorCount: 8
OSArchitecture: Arm64
OSDescription: Darwin 21.1.0 Darwin Kernel Version 21.1.0: Sat Sep 11 12:27:45 PDT 2021; root:xnu-8019.40.67.171.4~1/RELEASE_ARM64_T8101
OSVersion: Unix 12.0.0

rich@MacBook-Air-M1-2020 dotnet-runtimeinfo % dotnet tool uninstall -g dotnet-runtimeinfo
Tool 'dotnet-runtimeinfo' (version '1.0.5') was successfully uninstalled.
rich@MacBook-Air-M1-2020 dotnet-runtimeinfo % dotnet tool install -g dotnet-runtimeinfo -a x64
Skip NuGet package signing validation. NuGet signing validation is not available on Linux or macOS https://aka.ms/workloadskippackagevalidation .
You can invoke the tool using the following command: dotnet-runtimeinfo
Tool 'dotnet-runtimeinfo' (version '1.0.5') was successfully installed.
rich@MacBook-Air-M1-2020 dotnet-runtimeinfo % dotnet-runtimeinfo
         42
         42              ,d                             ,d
         42              42                             42
 ,adPPYb,42  ,adPPYba, MM42MMM 8b,dPPYba,   ,adPPYba, MM42MMM
a8"    `Y42 a8"     "8a  42    42P'   `"8a a8P_____42   42
8b       42 8b       d8  42    42       42 8PP"""""""   42
"8a,   ,d42 "8a,   ,a8"  42,   42       42 "8b,   ,aa   42,
 `"8bbdP"Y8  `"YbbdP"'   "Y428 42       42  `"Ybbd8"'   "Y428

**.NET information
Version: 3.1.19
FrameworkDescription: .NET Core 3.1.19
Libraries version: 3.1.19-servicing.21411.1
Libraries hash: bb01933c496758887ca03572c8e2a16a82a1779a

**Environment information
ProcessorCount: 8
OSArchitecture: X64
OSDescription: Darwin 21.1.0 Darwin Kernel Version 21.1.0: Sat Sep 11 12:27:45 PDT 2021; root:xnu-8019.40.67.171.4~1/RELEASE_ARM64_T8101
OSVersion: Unix 21.1.0.0

Dupe of https://github.com/dotnet/sdk/issues/17241.

[vitek-karas]

It should be fixed in ,NET 6 GA as well as .NET 7 (this is the 6.0 port - https://github.com/dotnet/sdk/pull/21958). Closing this issue as it has been fixed.

[vitek-karas]

@TwisterTies unfortunately the fixes in .NET 6 arm64 SDK require the tool to be reinstalled. Can you try that? If it still doesn’t work, then could you please create a new issue?