Diamond imports don't seem to work correctly?

[bojidar-bg]

Description: Splitting a file into multiple files that import each other ends up breaking rule-s despite the project executing. It looks as if the different files are referring to the same types but to different node definitions, and hence the net never matches anything in order to start executing -- but it might be something else instead.

To reproduce: In the linked Gist, uncomment all the import lines and comment all the require lines. Despite everything parsing and executing, for some odd reason, rule-s won't match. I have not yet tried to debug the issue further, but I am going to guess that either the fact that I have "diamond" dependencies between files (A depends on B and C that both depend on D) manages to break the import system.

Issue found while developing https://gist.github.com/bojidar-bg/6c52d1f1ed3fb3a583aaff9a184687fe