Inter-module dependencies in External System integrations

I'm working on an External System integration. I have some questions about importing multi-module projects.

Edit: I have simplified the question

Imagine I have a project A and a project B. The user has linked both of these projects explicitly. I would like to create a dependency between them, say because project B represents artifact foo:bar:1.0.0 and project A has a dependency on that artifact. The maven integration will detect this case and create a module dependency rather than a library, which is really useful for editing. My leiningen integration does this too, but it pre-dates the External System API and doesn't use it either.
In this case, I can't see a way to do this, because resolveProjectInfo() will be called twice, once for each linked project. When it's called I have no access to wider project context, so when project A is resolved there's no way to know that there's a project B representing that artifact.



There is an experimental support of the dependency substitution from separate linked project modules. It is disabled by default. You can try it using the `external.system.substitute.library.dependencies` registry key.

The extension point here is `com.intellij.openapi.externalSystem.service.project.ExternalProjectsWorkspaceImpl.Contributor`.

Currently the `org.jetbrains.idea.maven.importing.MavenWorkspaceContributor` and `org.jetbrains.plugins.gradle.service.project.GradleWorkspaceContributor` used for <gradle> <=> <gradle> and <gradle> <=> <maven> module library dependencies substitution.


Thanks Vladislav. I played around with it after enabling the registry key, but I couldn't get it to work. It works well with Maven as expected, but I couldn't get Gradle to substitute the deps either for a Gradle module or a Maven one.

Do you have an idea about when this might be fully developed and available? This basically blocks me from using the External System API as it stands.


There is no exact ETA about the feature. It depends on the community interest and feedback like yours.

Could you share your sample IDE project with maven/gradle modules with not working substitutions?


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