How do I specify the PAT to authenticate to a private nuget feed?

[efficienthacks]

I know about this command
#i "nuget:[url]"

but how do I specify the PAT when it's a private nuget feed?

[efficienthacks]

So you have to use the dotnet command:
dotnet nuget add source https://someServer/myTeam -n MyPrivateNugetPkg -u whatever -p adoPAT

[efficienthacks]

I've noticed that this adds it to my user level nuget config ("C:\Users\username\AppData\Roaming\NuGet\NuGet.Config") - the advantage of doing it this way is that the PAT is encrypted in the nuget.config file.

[jonsequitur]

You can add a PAT inside a nuget.config as well. If you do this in your user-level nuget.config, it will work today, and you don't have to use #i at all. In the future we'll also support any nuget.config found in the same folder or a parent folder of the notebook file, using the same conventions used for project files.