With 6.0.300-preview.22204.3, warning NU5104 occurs when packing a F# project

[WenJunJi01]

Environment: .NET SDK 6.0.300-preview.22204.3 (runtime-6.0.3)

Repro steps:

1. Install VS 17.3.0 Preview 1.0 [32413.229.main] with inserted SDK 6.0.300-preview.22204.3
2. Create a new f# project in CLI
3. Run dotnet pack

Expected result:
The f# project should package successfully without any errors and warnings.

Actual result:
Warning "NU5104: A stable release of a package should not have a prerelease dependency." occurs.

Dotnet info:
C:\Users\v-wenjj>dotnet --info
.NET SDK (reflecting any global.json):
Version: 6.0.300-preview.22204.3
Commit: 4f23310

Runtime Environment:
OS Name: Windows
OS Version: 10.0.19043
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\6.0.300-preview.22204.3\

Host (useful for support):
Version: 6.0.3
Commit: c24d9a9c91

.NET SDKs installed:
6.0.300-preview.22204.3 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.All 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.23 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.23 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.23 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download

[WenJunJi01]

The same issue also repros with .NET 7 Preview 4 SDK installed.

Dotnet info:

[baronfel]

@KevinRansom this is to be expected with preview SDK releases, right? since we're including preview FSharp.Core packages in the SDK ahead of publishing stable versions to NuGet.org?

[WenJunJi01]

Also repro with .NET 7 Preview 5 (SDK Version 7.0.100-preview.5.22258.1)

[baronfel]

I don't think this is an actual error: FSharp.Core is bundled as a preview version with each preview release of the SDK, and this is just appearing because the default version applied to a package when built is 1.0.0, which triggers the NuGet version validation. I believe that:

• when building/testing preview SDKs for F# projects, the FSharp.Core version will always be preview, and therefore either a) NU5104 should be ignored for FSharp.Core or b) the version of the test project used for packaging should be set to a preview version
• when building/testing stable SDKs for F# projects, the FSharp.Core version should always be stable, and therefore we should not see this issue.

[baronfel]

Tagging @KevinRansom for confirmation.