How are NuGet repos organized? - visual-studio

Question

I decided to push a .NET Standard class library to an existing local NuGet repo at my workplace.
I did it by having the NuGet package automatically pushed after the build in Visual Studio:
nuget push [PACKAGE_FILENAME] -Source [REPO_ON_THE_NETWORK]
Prior to my push, there were 3 pre-existing packages for other projects in the repo. After my push, the only project visible - via the NuGet Package Manager UI in Visual Studio - was the one I just pushed. I can consume my project from the NuGet repo without issues.
I took a look in the folder itself on the network, and this is what I saw:
[ ] Repo
|
|_ [ ] Proj1
| |
| |_ [ ] v1.0.0
| | |
| | |_ [ ] lib
| | | |
| | | |_ [ ] net20
| | | | |
| | | | |_ .dll
| | | | |_ .pdb
| | | |
| | | |_ [ ] net46
| | | |
| | | |_ .dll
| | | |_ .pdb
| | |
| | |_ .nupkg
| | |_ .nupkg.sha512
| | |_ .nuspec
| |
| |_ [ ] v1.0.1
| |
| |_ .nupkg
| |_ .nupkg.sha512
| |_ .nuspec
|
|_ [ ] MyRecentlyPushedProj
|
|_ .nupkg
I have three questions:
Why are the folder's organized in such different ways? Notice how one folder has a sub-folder with the actual project binaries, while the others don't. Also notice how my recently-pushed project lacks everything except for the NuGet package file.
When we manually delete the recently-pushed project from the repo, then the old projects reappear in the NuGet Package Manager UI. Does having differently-organized folders mess with NuGet's ability to scan the repo? Has the way NuGet organizes the projects changed over time (with newer versions)?
How am I able to consume the recently-pushed project successfully without the folder containing any of the binaries?

Answer 1

From the hierarchy tree you drew, I can see some differences:
Your package doesn't come with a version.
Your package doesn't have a lib folder.
Now, there are two ways of publishing a NuGet package with NuGet CLI: push and add.
The main difference is that add is for non-HTTP package source (as stated on MSDN) and that it publishes the package in a hierarchic manner, while push doesn't always (and it usually depends on how the feed was initialized).
My recommendation is that you check the documentation I added, and based on that decide whether to use one command or the other. From what I can gather, you should use add.
Hope this helps.