Builtin NuGet client should support credential providers

[flcdrg]

nuget.exe supports using external credential providers. These are used for example for accessing Azure Artifacts feeds with the CredentialProvider.VSS.exe.

This mostly works for the NuGet* commands (except for #2345), but not for the NuGet internal client (eg. for #load/#addin directives)

https://docs.microsoft.com/en-us/azure/devops/artifacts/nuget/nuget-exe?view=vsts&tabs=new-nav#advanced-credential-provider-scenarios

See https://docs.microsoft.com/en-au/nuget/reference/extensibility/nuget-exe-credential-providers for details of how nuget.exe looks for credential providers (including the NUGET_CREDENTIALPROVIDERS_PATH environment variable)

[ghost]

also support of OAuth needed.

[thegrahamking]

Has there been any progress on this issue?

[Jason-Callas]

Is there any update on this issue? There are no comments in the last 3 years and was added to 2.x milestone 2 years ago (version 3.x) is already out.

[patriksvensson]

PR:s are very welcome.