As instructed by the Rider IDE, I installed the .NET Core framework from Microsoft. I know that the installation was successful since I am able to run the dotnet command from my terminal. However, after restarting Rider, I still get the following message:
Cannot detect .NET Core. Please install .NET Core and restart Rider.
Am I doing anything wrong?
I managed to fix the issue setting
/opt/dotnet/dotnet
in
Settings | Build,Execution,Deployment |
Toolset and Build | .NET Core CLI executable path
Previously, I was using /usr/bin/dotnet, but it doesn't work anymore. Also, auto detect seems to be broken.
Actually, /usr/bin/dotnet, the path returned by which dotnet, is just a shell file defering to /opt/dotnet/dotnet, as its content is:
#!/bin/sh
export DOTNET_ROOT=/opt/dotnet
exec /opt/dotnet/dotnet $@
# vim: ts=2 sw=2 et:
I was just experiencing this issue due to a botched install of Xamarin Android on Arch Linux and was able to resolve it by doing the following:
First execute dotnet --info to get the path of .NET Core SDKs installed:
.NET Core SDK (reflecting any global.json): Version: 2.1.500
Commit: b68b931422
Runtime Environment: OS Name: arch OS Version: OS Platform:
Linux RID: arch-x64 Base Path: /opt/dotnet/sdk/2.1.500/
Host (useful for support): Version: 2.1.6 Commit: 3f4f8eebd8
.NET Core SDKs installed:
2.1.500 [/opt/dotnet/sdk].NET Core runtimes installed: Microsoft.NETCore.App 2.1.6
[/opt/dotnet/shared/Microsoft.NETCore.App]
To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download
Up one directory at /opt/dotnet/ there should be an executable named "dotnet." The absolute path to this file (/opt/dotnet/dotnet) should be set as the .NET Core CLI executable path value under File → Settings → Build, Execution, Deployment → Toolset and Build settings in Rider.
Just in case, here are my other toolset configuration settings:
Mono executable path: /usr/bin/mono
Use MSBuild version: Auto detected (15,0), /usr/lib/mono/msbuild/bin/MSBuild.dll
I also have the following values added to my PATH in .bashrc due to an error I received regarding Razor not being found:
export MSBuildSDKsPath=/opt/dotnet/sdk/$(dotnet --version)/Sdks
export PATH=${PATH}:${MSBuildSDKsPath}
None of these worked for me. I am on PopOS and found a solution here shown in the below screenshot. I think in general it is still a bad idea to install anything from Jetbrains through the Snap store. I've had issues with Intellij and Pycharm as well dating back to ~2014 that were immediately resolved by not using the Snap store.
You can set up the path to .NET CLI in Rider settings: menu File* → Settings → Build, Execution, Deployment → Toolset and Build. But usually Rider should auto detect it.
Please check what you have dotnet in your PATH. Pay attention; you should restart Rider after installing the .NET Core SDK.
My solution was run command dotnet new console on root of project. Then, the templates are showed.
Solution adapted from this answer on YouTrack.
Add the DOTNET_ROOT environment variable in the file launchsettings.json. In my case, it was:
"DOTNET_ROOT": "/usr/share/dotnet"
I made the rather silly mistake of installing .NET Core runtime but forgetting about .NET Core SDK (so the dotnet tool still worked). Once I actually installed the SDK, Rider instantly detected it (.NET 3.1 and Rider 2019.3).
The suggestion to use dotnet --info by masterwok quickly highlights this issue though.
Neither reinstallation nor path opt/lib64/dotnet works for me.
I have to use the path /var/run/host/usr/lib64/dotnet for .NET cli executable path SDK instead.
Source: https://github.com/flathub/com.jetbrains.Rider/issues/36#issuecomment-1154737584
