Error parsing dotnet publish parameters when using ReadyToRun

Version: 3.0.100-preview5-011507 Commit: fddc070d00

When running dotnet publish using both -p:ReadyToRun and --self-contained the message is misleading:

$ dotnet publish -c Release -r linux-arm --self-contained -p:ReadyToRun=true -o scd
Microsoft (R) Build Engine version 16.1.65-preview+gc86abee47b for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

/opt/dotnet/sdk/3.0.100-preview5-011507/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.TargetingPackResolution.targets(85,33): error MSB4030: "-p:ReadyToRun=true" is an invalid value for the "SelfContained" parameter of the "ResolveFrameworkReferences" task.
The "SelfContained" parameter is of type "System.Boolean". [/home/pi/test3/test3.csproj]

If instead, I specify =true the command succeed:

 $ dotnet publish -c Release -r linux-arm --self-contained=true -p:ReadyToRun=true -o scd
Microsoft (R) Build Engine version 16.1.65-preview+gc86abee47b for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  Restore completed in 372.72 ms for /home/pi/test3/test3.csproj.
/opt/dotnet/sdk/3.0.100-preview5-011507/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.RuntimeIdentifierInference.targets(151,5): message NETSDK1057: You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview [/home/pi/test3/test3.csproj]
  test3 -> /home/pi/test3/bin/Release/netcoreapp3.0/linux-arm/test3.dll
  test3 -> /home/pi/test3/bin/Release/netcoreapp3.0/linux-arm/test3.Views.dll
  test3 -> /home/pi/test3/scd/

It looks like -p:ReadyToRun already forces --self-contained=true but I would like the command output to clearly states whether the produced output is self-contained or not.

By the way, the parameter --self-contained can be used alone (without =true) and it has been possible even in .NET Core 2.x. The following command is valid and succeeds:

dotnet publish -c Release -r linux-arm --self-contained -o abc

[livarcocc]

The problem here is how the parser works. The issue in particular is not about ReadyToRun, but also that you are passing a -p value after self-contained. Because that is not a special value to the parser, like -o, that we intercept and translate, the parser is seeing some value after --self-contained and assumes that it is the value being passed to self-contained.

In this case, I would recommend passing a value to self-contained <true|false> as a way around this. Meanwhile, @peterhuene anything we could do in the parser to improve this?

[AntonLapounov]

I have tried your publish command on .NET 6 and --self-contained -p:ReadyToRun=true just works now.