`dotnet tool install --roll-forward` is remembered across uninstall

[richlander]

I was testing the new --roll-forward feature on Windows with .NET 9 RC2. I seemed to remember the --roll-forward value after uninstall, which I would not expect.

The tool: https://www.nuget.org/packages/NuGet.PackageSourceMapper

Command: dotnet tool install -g --roll-forward NuGet.PackageSourceMapper

Given:

• The tool is built with .NET 6.
• The tool does not have roll-forward configured.
• I do not have .NET 6 installed.
• I have .NET 8+9 installed.
• I am (un)installing the tool with -g.

Here's my process:

• Install tool
• Validate that it fails to launch, reporting a missing runtime.
• Uninstall tool
• Install tool with --roll-forward
• Attempt to run the tool. It works.
• Uninstall the tool
• Install the tool w/o roll-forward
• It still works, unexpectedly

I'll test again with .NET 9 GA later today.

[edvilme]

Hello @richlander, can you please check dotnet --list-runtimes to make sure you don't have the 6.0 runtime installed? When trying to replicate the steps above, the same thing happened to me before I realized I had the 6.0 runtime installed for some reason.

Because the 6.0 runtime was installed, the tool ran natively without the need for roll-forward, as the expected runtime was already installed. After I removed it, I was able to replicate the expected steps:

Please let me know if this is helpful or if the error persists, in which case I can further investigate