Omnisharp redlines NET 6 packages and code after NET 7 installation MacOS 12.6

[washeduplizard]

Issue Description

NET 7 installation makes omnisharp redline AspNetCore packages on previous .NET sdks on MacOS+VSCode

Steps to Reproduce

Have .NET 7 installed on machine
Open Project or solution in VSCode running .NET 6
project or solution will restore and build successfully but code and packages will be redlined

Expected Behavior

Omnisharp should not redline

Actual Behavior

Logs

OmniSharp log

Starting OmniSharp server at 11/16/2022, 3:30:56 PM Target: /Users/dkTimVer/Projects/Lego/mould-log-api/LEGO.MouldLog.sln

OmniSharp server started with .NET 7.0.100
.
Path: /Users/dkTimVer/.vscode/extensions/ms-dotnettools.csharp-1.25.2-darwin-x64/.omnisharp/1.39.3-beta.11-net6.0/OmniSharp.dll
PID: 6468

Starting OmniSharp on Unknown 0.0 (Unknown)
info: OmniSharp.Services.DotNetCliService
Checking the 'DOTNET_ROOT' environment variable to find a .NET SDK
info: OmniSharp.Services.DotNetCliService
Using the 'dotnet' on the PATH.
info: OmniSharp.Services.DotNetCliService
DotNetPath set to dotnet
info: OmniSharp.MSBuild.Discovery.MSBuildLocator
Located 2 MSBuild instance(s)
1: .NET Core SDK 7.0.100 17.4.0 - "/usr/local/share/dotnet/sdk/7.0.100/"
2: .NET Core SDK 6.0.201 17.1.0 - "/usr/local/share/dotnet/sdk/6.0.201/"
info: OmniSharp.MSBuild.Discovery.MSBuildLocator
Registered MSBuild instance: .NET Core SDK 7.0.100 17.4.0 - "/usr/local/share/dotnet/sdk/7.0.100/"
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpFormattingWorkspaceOptionsProvider, Order: 0
info: OmniSharp.Cake.CakeProjectSystem
Detecting Cake files in '/Users/dkTimVer/Projects/Lego/mould-log-api'.
info: OmniSharp.Cake.CakeProjectSystem
Did not find any Cake files
info: OmniSharp.MSBuild.ProjectSystem
Detecting projects in '/Users/dkTimVer/Projects/Lego/mould-log-api/LEGO.MouldLog.sln'.
info: OmniSharp.MSBuild.ProjectManager
Queue project update for '/Users/dkTimVer/Projects/Lego/mould-log-api/api/LEGO.MouldLog.Api.csproj'
info: OmniSharp.MSBuild.ProjectManager
Queue project update for '/Users/dkTimVer/Projects/Lego/mould-log-api/api-e2e-tests/LEGO.MouldLog.Api.Tests.E2E.csproj'
info: OmniSharp.MSBuild.ProjectManager
Queue project update for '/Users/dkTimVer/Projects/Lego/mould-log-api/api-unit-tests/LEGO.MouldLog.Api.Tests.Unit.csproj'
info: OmniSharp.MSBuild.ProjectManager
Queue project update for '/Users/dkTimVer/Projects/Lego/mould-log-api/domain/LEGO.MouldLog.Domain.csproj'
info: OmniSharp.MSBuild.ProjectManager
Queue project update for '/Users/dkTimVer/Projects/Lego/mould-log-api/domain-unit-tests/LEGO.MouldLog.Domain.Tests.Unit.csproj'
info: OmniSharp.MSBuild.ProjectManager
Queue project update for '/Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/ErrorCauseAPI/src/LEGO.ErrorCauseAPI/LEGO.ErrorCauseAPI.csproj'
info: OmniSharp.MSBuild.ProjectManager
Queue project update for '/Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/InspectionCatalogCode/src/LEGO.SAP.InspectionCatalogCode/LEGO.SAP.InspectionCatalogCode.csproj'
info: OmniSharp.MSBuild.ProjectManager
Queue project update for '/Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/Notification/src/LEGO.SAP.Notification/LEGO.SAP.Notification.csproj'
info: OmniSharp.Script.ScriptProjectSystem
Detecting CSX files in '/Users/dkTimVer/Projects/Lego/mould-log-api'.
info: OmniSharp.Script.ScriptProjectSystem
Did not find any CSX files
info: OmniSharp.WorkspaceInitializer
Configuration finished.
info: OmniSharp.Stdio.Host
Omnisharp server running using Stdio at location '/Users/dkTimVer/Projects/Lego/mould-log-api' on host 6158.
info: OmniSharp.MSBuild.ProjectManager
Loading project: /Users/dkTimVer/Projects/Lego/mould-log-api/api/LEGO.MouldLog.Api.csproj
info: OmniSharp.MSBuild.ProjectManager
Successfully loaded project file '/Users/dkTimVer/Projects/Lego/mould-log-api/api/LEGO.MouldLog.Api.csproj'.
info: OmniSharp.MSBuild.ProjectManager
Adding project '/Users/dkTimVer/Projects/Lego/mould-log-api/api/LEGO.MouldLog.Api.csproj'
info: OmniSharp.MSBuild.ProjectManager
Loading project: /Users/dkTimVer/Projects/Lego/mould-log-api/api-e2e-tests/LEGO.MouldLog.Api.Tests.E2E.csproj
info: OmniSharp.MSBuild.ProjectManager
Successfully loaded project file '/Users/dkTimVer/Projects/Lego/mould-log-api/api-e2e-tests/LEGO.MouldLog.Api.Tests.E2E.csproj'.
info: OmniSharp.MSBuild.ProjectManager
Adding project '/Users/dkTimVer/Projects/Lego/mould-log-api/api-e2e-tests/LEGO.MouldLog.Api.Tests.E2E.csproj'
info: OmniSharp.MSBuild.ProjectManager
Loading project: /Users/dkTimVer/Projects/Lego/mould-log-api/api-unit-tests/LEGO.MouldLog.Api.Tests.Unit.csproj
info: OmniSharp.MSBuild.ProjectManager
Successfully loaded project file '/Users/dkTimVer/Projects/Lego/mould-log-api/api-unit-tests/LEGO.MouldLog.Api.Tests.Unit.csproj'.
info: OmniSharp.MSBuild.ProjectManager
Adding project '/Users/dkTimVer/Projects/Lego/mould-log-api/api-unit-tests/LEGO.MouldLog.Api.Tests.Unit.csproj'
info: OmniSharp.MSBuild.ProjectManager
Loading project: /Users/dkTimVer/Projects/Lego/mould-log-api/domain/LEGO.MouldLog.Domain.csproj
info: OmniSharp.MSBuild.ProjectManager
Successfully loaded project file '/Users/dkTimVer/Projects/Lego/mould-log-api/domain/LEGO.MouldLog.Domain.csproj'.
info: OmniSharp.MSBuild.ProjectManager
Adding project '/Users/dkTimVer/Projects/Lego/mould-log-api/domain/LEGO.MouldLog.Domain.csproj'
info: OmniSharp.MSBuild.ProjectManager
Loading project: /Users/dkTimVer/Projects/Lego/mould-log-api/domain-unit-tests/LEGO.MouldLog.Domain.Tests.Unit.csproj
info: OmniSharp.MSBuild.ProjectManager
Successfully loaded project file '/Users/dkTimVer/Projects/Lego/mould-log-api/domain-unit-tests/LEGO.MouldLog.Domain.Tests.Unit.csproj'.
info: OmniSharp.MSBuild.ProjectManager
Adding project '/Users/dkTimVer/Projects/Lego/mould-log-api/domain-unit-tests/LEGO.MouldLog.Domain.Tests.Unit.csproj'
info: OmniSharp.MSBuild.ProjectManager
Loading project: /Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/ErrorCauseAPI/src/LEGO.ErrorCauseAPI/LEGO.ErrorCauseAPI.csproj
info: OmniSharp.MSBuild.ProjectManager
Successfully loaded project file '/Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/ErrorCauseAPI/src/LEGO.ErrorCauseAPI/LEGO.ErrorCauseAPI.csproj'.
info: OmniSharp.MSBuild.ProjectManager
Adding project '/Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/ErrorCauseAPI/src/LEGO.ErrorCauseAPI/LEGO.ErrorCauseAPI.csproj'
info: OmniSharp.MSBuild.ProjectManager
Loading project: /Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/InspectionCatalogCode/src/LEGO.SAP.InspectionCatalogCode/LEGO.SAP.InspectionCatalogCode.csproj
info: OmniSharp.MSBuild.ProjectManager
Successfully loaded project file '/Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/InspectionCatalogCode/src/LEGO.SAP.InspectionCatalogCode/LEGO.SAP.InspectionCatalogCode.csproj'.
info: OmniSharp.MSBuild.ProjectManager
Adding project '/Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/InspectionCatalogCode/src/LEGO.SAP.InspectionCatalogCode/LEGO.SAP.InspectionCatalogCode.csproj'
info: OmniSharp.MSBuild.ProjectManager
Loading project: /Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/Notification/src/LEGO.SAP.Notification/LEGO.SAP.Notification.csproj
info: OmniSharp.MSBuild.ProjectManager
Successfully loaded project file '/Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/Notification/src/LEGO.SAP.Notification/LEGO.SAP.Notification.csproj'.
info: OmniSharp.MSBuild.ProjectManager
Adding project '/Users/dkTimVer/Projects/Lego/mould-log-api/generated-clients/Notification/src/LEGO.SAP.Notification/LEGO.SAP.Notification.csproj'
info: OmniSharp.MSBuild.ProjectManager
Update project: LEGO.MouldLog.Api
info: OmniSharp.MSBuild.ProjectManager
Update project: LEGO.MouldLog.Api.Tests.E2E
info: OmniSharp.MSBuild.ProjectManager
Update project: LEGO.MouldLog.Api.Tests.Unit
info: OmniSharp.MSBuild.ProjectManager
Update project: LEGO.MouldLog.Domain
info: OmniSharp.MSBuild.ProjectManager
Update project: LEGO.MouldLog.Domain.Tests.Unit
info: OmniSharp.MSBuild.ProjectManager
Update project: LEGO.ErrorCauseAPI
info: OmniSharp.MSBuild.ProjectManager
Update project: LEGO.SAP.InspectionCatalogCode
info: OmniSharp.MSBuild.ProjectManager
Update project: LEGO.SAP.Notification
info: OmniSharp.Roslyn.CSharp.Services.Diagnostics.CSharpDiagnosticWorkerWithAnalyzers
Solution initialized -> queue all documents for code analysis. Initial document count: 225.
Received response for /quickinfo but could not find request.
Received response for /v2/getcodeactions but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
No symbol found. File: /Users/dkTimVer/Projects/Lego/mould-log-api/api/Controllers/V1/EntriesController.cs, Line: 17, Column: 47.
Received response for /v2/getcodeactions but could not find request.
Received response for /v2/getcodeactions but could not find request.
Received response for /v2/getcodeactions but could not find request.

C# log

Post the output from Output-->C# here

Environment information

VSCode version: 1.73.1
C# Extension: 1.25.2

Mono Information

OmniSharp using mono: 6.12.0

Dotnet Information

.NET SDK: Version: 7.0.100 Commit: e12b7af219

Runtime Environment:
OS Name: Mac OS X
OS Version: 12.6
OS Platform: Darwin
RID: osx.12-x64
Base Path: /usr/local/share/dotnet/sdk/7.0.100/

Host:
Version: 7.0.0
Architecture: x64
Commit: d099f075e4

.NET SDKs installed:
3.1.416 [/usr/local/share/dotnet/sdk]
3.1.417 [/usr/local/share/dotnet/sdk]
5.0.405 [/usr/local/share/dotnet/sdk]
5.0.406 [/usr/local/share/dotnet/sdk]
6.0.201 [/usr/local/share/dotnet/sdk]
7.0.100 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 3.1.22 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.23 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.14 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.15 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 3.1.22 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.23 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.14 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.15 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.0 [/usr/local/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

Visual Studio Code Extensions

Extension	Author	Version
angular-schematics	cyrilletuzi	5.2.8
auto-barrel	mikehanson	1.10.0
code-spell-checker	streetsidesoftware	2.11.0
csharp	ms-dotnettools	1.25.2
csharpextensions	kreativ-software	1.7.3
csharpier-vscode	csharpier	1.3.5
data-workspace-vscode	ms-mssql	0.3.0
dotnet-test-explorer	formulahendry	0.7.8
EditorConfig	EditorConfig	0.16.4
intellicode-api-usage-examples	VisualStudioExptTeam	0.2.6
java	redhat	1.12.0
mssql	ms-mssql	1.16.0
ng-template	Angular	14.2.0
ng-zorro-vscode	cipchk	14.0.2
powershell	ms-vscode	2022.10.0
prettier-vscode	esbenp	9.9.0
remote-containers	ms-vscode-remote	0.262.3
sort-js-object-keys	zengxingxin	1.0.6
sql-bindings-vscode	ms-mssql	0.3.0
sql-database-projects-vscode	ms-mssql	0.19.0
user-secrets	adrianwilczynski	2.0.1
vscode-docker	ms-azuretools	1.22.2
vscode-eslint	dbaeumer	2.2.6
vscode-java-debug	vscjava	0.46.0
vscode-java-dependency	vscjava	0.21.1
vscode-java-pack	vscjava	0.25.6
vscode-java-test	vscjava	0.37.1
vscode-kubernetes-tools	ms-kubernetes-tools	1.3.11
vscode-lombok	vscjava	1.1.0
vscode-maven	vscjava	0.39.2
vscode-mysql	formulahendry	0.4.1
vscode-pull-request-github	GitHub	0.54.1
vscode-structurizr	ciarant	0.0.9
vscode-stylelint	stylelint	1.2.3
vscode-typescript-tslint-plugin	ms-vscode	1.3.4
vscode-yaml	redhat	1.10.1
vscodeintellicode	VisualStudioExptTeam	1.2.29

[filipw]

Have you tried dotnet clean and dotnet build after installing the new SDK?

[washeduplizard]

Yes, I have. Retried just now as well for good measure but to no avail.

[tillig]

I see this as well. I don't see any relevant logs in the OmniSharp window, but I do see it's finding both .NET 6 and 7. I'll include logs below.

If I update global.json to specify .NET 7 SDK and update the list of target frameworks to include net7.0 this goes away, but just one or the other doesn't fix it.

I tried dotnet clean and dotnet build, it didn't fix the issue.

Logs from OmniSharp, if it helps. This is a project where global.json specifies .NET 6.0.401 (which is installed) and the target framework is only net6.0.

Starting OmniSharp server at 11/18/2022, 9:32:56 AM
    Target: /Users/tillig/dev/my-project/MyProject.sln

OmniSharp server started with .NET 6.0.401
.
    Path: /Users/tillig/.vscode/extensions/ms-dotnettools.csharp-1.25.2-darwin-x64/.omnisharp/1.39.2-net6.0/OmniSharp.dll
    PID: 46837

[info]: OmniSharp.Stdio.Host
        Starting OmniSharp on Unknown 0.0 (Unknown)
[info]: OmniSharp.Services.DotNetCliService
        Checking the 'DOTNET_ROOT' environment variable to find a .NET SDK
[info]: OmniSharp.Services.DotNetCliService
        Using the 'dotnet' on the PATH.
[info]: OmniSharp.Services.DotNetCliService
        DotNetPath set to dotnet
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Located 2 MSBuild instance(s)
            1: .NET Core SDK 7.0.100 17.4.0 - "/usr/local/share/dotnet/sdk/7.0.100/"
            2: .NET Core SDK 6.0.401 17.3.1 - "/usr/local/share/dotnet/sdk/6.0.401/"
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Registered MSBuild instance: .NET Core SDK 7.0.100 17.4.0 - "/usr/local/share/dotnet/sdk/7.0.100/"
[info]: OmniSharp.WorkspaceInitializer
        Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpFormattingWorkspaceOptionsProvider, Order: 0

[BritoAlv]

Same problem, any hint?

[davemateer]

Also seeing this same problem. Cannot use VS Code for .Net 6 projects after installing .Net 7 SDK. Uninstalling the .Net 7 SDK resolves the problem.

[davemateer]

And the real kicker is until OmniSharp.SdkInstanceProvider fails to parse 'omnisharp.sdkVersion' and 'omnisharp.sdkPath' is fixed, I think maybe the only solution is to keep uninstalling the SDK for .Net 6 and then reinstalling when working on a .Net 7 project.

[filipw]

And the real kicker is until OmniSharp.SdkInstanceProvider fails to parse 'omnisharp.sdkVersion' and 'omnisharp.sdkPath' is fixed, I think maybe the only solution is to keep uninstalling the SDK for .Net 6 and then reinstalling when working on a .Net 7 project.

I am sorry for your trouble. The handling of these properties was fixed already but the patched extension has not been released yet. However, there are other ways of telling OmniSharp which SDK to use than just using the VS Code options.

You can create a file omnisharp.json and set:

{
    "sdk": {
        "path": "/usr/local/share/dotnet/sdk/6.0.403/",
        "version": "6.0.403"
    }
}

in it. The file can be placed in the root directory of your solution (then it applies only there) or in %USERPROFILE%/.omnisharp/omnisharp.json, then it applies globally.

See here for more details https://github.com/OmniSharp/omnisharp-roslyn/wiki/Configuration-Options#sdk-options