uno-check cant see The framework Microsoft.NETCore.App,even it has installed

[prehonor]

uno-check --pre
It was not possible to find any compatible framework version
The framework 'Microsoft.NETCore.App', version '6.0.0' (x64) was not found.

• No frameworks were found.

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.NETCore.App&framework_version=6.0.0&arch=x64&rid=nixos.21.11-x64

dotnet --info
.NET SDK (reflecting any global.json):
Version: 6.0.100
Commit: 9e8b04bbff

Runtime Environment:
OS Name: nixos
OS Version: 21.11
OS Platform: Linux
RID: linux-x64
Base Path: /nix/store/mnmygpa1yiphv6kdgiyjrbf5302p27gj-dotnet-sdk-6.0.100/sdk/6.0.100/

Host (useful for support):
Version: 6.0.0
Commit: 4822e3c3aa

.NET SDKs installed:
6.0.100 [/nix/store/mnmygpa1yiphv6kdgiyjrbf5302p27gj-dotnet-sdk-6.0.100/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.0 [/nix/store/mnmygpa1yiphv6kdgiyjrbf5302p27gj-dotnet-sdk-6.0.100/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.0 [/nix/store/mnmygpa1yiphv6kdgiyjrbf5302p27gj-dotnet-sdk-6.0.100/shared/Microsoft.NETCore.App]

[jeromelaban]

Thanks for the report. This is an interesting issue.

I wonder, did you by any chance, install .NET in the same terminal for which you ran uno-check? Does it do the same error with another terminal?

[prehonor]

Yes,it does.
You mean I should install dotnet framework manually instead of do by package manager of Linux ， can I set some environment variables for uno-check,so it can detect dotnet frameworkd path？

[jeromelaban]

Not necessarily, How did you install the runtime?

[prehonor]

By package manager，run command “nix-shell -iA dotnet-sdk_6” in NixOs,the nixos is special Linux distribution,Users maybe need set env var such as“ LD_LIBRARY_PATH”，“PATH ” ， because it has no env var in a terminal

[jeromelaban]

I see. I don't know about the details of this specific behavior. NixOS is not part of the list of supported distros, so I don't know what would be missing.

In general, the DOTNET_ROOT variable is used to determine the location of the runtime/sdk, maybe this is what's missing here.

You could also try installing manually with these instructions.

In all cases, this is not something that uno-check does address at this point, as it needs .NET itself to run (for size reasons mainly). We could change uno.check to be self-contained if it becomes a problem.

[prehonor]

I see. I don't know about the details of this specific behavior. NixOS is not part of the list of supported distros, so I don't know what would be missing.

In general, the DOTNET_ROOT variable is used to determine the location of the runtime/sdk, maybe this is what's missing here.

You could also try installing manually with these instructions.

In all cases, this is not something that uno-check does address at this point, as it needs .NET itself to run (for size reasons mainly). We could change uno.check to be self-contained if it becomes a problem.

I make mistakes about Nixos shell env setting, after corrected it and setting DOTNET_ROOT , I sucessed, Thank you very much.