In .NET I do it om the binaries, I reflect over the assemblies and list the dependencies.
In the same run one can also validate that there are no incompatible transitive dependencies.
Within assemblies (between namespaces) is much harder unfortunately. That means assemblies have to be made to make module boundaries obvious, even though it’s a bit of an antipattern. There are tools such as nsdepcop that watch namespace dependencies, but it’s brittle and a lot of work.
In the same run one can also validate that there are no incompatible transitive dependencies.
Within assemblies (between namespaces) is much harder unfortunately. That means assemblies have to be made to make module boundaries obvious, even though it’s a bit of an antipattern. There are tools such as nsdepcop that watch namespace dependencies, but it’s brittle and a lot of work.