Nuget package references and depencies problem

I have c# projects with packages and references in hierarchy like this

Project-A  package1  package2  Project-B    package3    package4    Project-C      package5      package6

So project A references some packages and Project B, which references another packages and Project C, which references some third packets. I need to pack the project A into a NuGet Package so that in it has dependencies to all of the packages like this :

Project-A-Nuget  package1  package2  package3  package4  package5  package6

I already tried to use .nuspec file to define dependencies like above but in that case i cant download my package because it tries to find and restore my referenced projects as packages.I tried to use just dotnet pack, but in that case it is not registering packages as dependencies

My .nuspec file looks like this

<?xml version="1.0" encoding="utf-8"?><package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd"><metadata><id>ProjectA.Nuget</id><version>1.0.0</version><title>ProjectA.Nuget</title><authors>Me</authors><requireLicenseAcceptance>false</requireLicenseAcceptance><description>Description.</description><dependencies><dependency id="package1" version="[6.0.11]" /><dependency id="package2" version="[6.0.11]" /><dependency id="package3" version="[6.0.11]" /><dependency id="package4" version="[6.0.11]" /><dependency id="package5" version="[6.0.11]" /><dependency id="package6" version="[6.0.11]" /></dependencies></metadata></package>