dotnet watch can't work

[mcxufly]

URL

https://dotnet.microsoft.com/zh-cn/learn/aspnet/blazor-tutorial/run###

Operating system

linux

More information about your system

OS: Arch Linux x86_64
Kernel: 6.11.1-arch1-1

Description

I create a BlazorApp as the tutorial show, but command dotnet watch can't work.

You must install or update .NET to run this application.

App: /usr/share/dotnet/sdk/8.0.402/DotnetTools/dotnet-watch/8.0.402-servicing.24466.16/tools/net8.0/any/dotnet-watch.dll
Architecture: x64
Framework: 'Microsoft.AspNetCore.App', version '8.0.8' (x64)
.NET location: /usr/share/dotnet/

No frameworks were found.

Learn more:
https://aka.ms/dotnet/app-launch-failed

To install missing framework, download:
https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=8.0.8&arch=x64&rid=arch-x64&os=arch

dotnet --info

.NET SDK:
Version: 8.0.402
Commit: 70aa751718
Workload version: 8.0.400-manifests.2772ffde
MSBuild version: 17.11.4+37eb419ad

Runtime Environment:
OS Name: arch
OS Version:
OS Platform: Linux
RID: linux-x64
Base Path: /usr/share/dotnet/sdk/8.0.402/

.NET workloads installed:
Configured to use loose manifests when installing new manifests.
There are no installed workloads to display.

Host:
Version: 8.0.8
Architecture: x64
Commit: 08338fcaa5

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

.NET runtimes installed:
Microsoft.NETCore.App 8.0.8 [/usr/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

[katiesavage]

Can you clarify the method you use to install .NET on Linux?

@danroth27 any ideas?

[danroth27]

My best guess is some step was missed when installing the .NET SDK. Once we hear back on how the install was, done we can try to reproduce the issue.

[danroth27]

Actually, I investigated this with @richlander, and it looks like on Arch Linux you need to install the ASP.NET Core runtime separately using the aspnet-runtime package. @mcxufly Can you give that a try?: pacman -Sy aspnet-runtime.

@richlander We should probably update our Install .NET on Linux with some instructions on how to get set up on Arch Linux.

[richlander]

For clarity, the following command will install .NET SDK, ASP.NET Core, and .NET runtime.

sudo pacman -Sy dotnet-sdk aspnet-runtime

[mcxufly]

@katiesavage I use pacman installed dotnet-sdk. I do not install package aspnet-runtime. I will install it and try again.
And thanks a lot @richlander @danroth27 .

[mcxufly]

I installed package aspnet-runtime, the blazor app run correctly.
I think package aspnet-runtime should be mentioned in install page
Thanks a lot again!

[katiesavage]

I'm glad this helped! Closing this issue now 🙂

[mairaw]

@adegeo can you check the request for adding information to the docs here?

[mairaw]

Closing. We have dotnet/docs#42849 tracking the docs issue.