Source code only NuGet packages exists, but they are not very common. NuGet packages are just zip files that contain a manifest file and usually a couple of .NET assemblies. Since its basically just a versioned zip file with some targeting information you can package whatever you want with it.
Many packages are open source, some are not. Source code is usually not distributed via NuGet you can instead use the project URL from the manifest to find the sources if they are available.
Source code only NuGet packages exists, but they are not very common. NuGet packages are just zip files that contain a manifest file and usually a couple of .NET assemblies. Since its basically just a versioned zip file with some targeting information you can package whatever you want with it.
Well, do the packages tend to be closed source? .deb packages are also often just binary, but there is usually a separate source package available.
They vary by publisher
Many packages are open source, some are not. Source code is usually not distributed via NuGet you can instead use the project URL from the manifest to find the sources if they are available.