Can root directory be a component while its sub-directories all each be a component?
I have a project created long time ago when I was learning how to use IntelliJ IDEA and how to configure a multi-component project using modules. I recall I wasn't how to properly do it and eventually gave up on it. When examining its rootDir/.idea/modules.xml now, I found there is a module for the root directory “MyXxxProject” of the project:
```
…
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/MyXxxProject.iml" filepath="$PROJECT_DIR$/MyXxxProject.iml" />
…
</modules>
</component>
```
and all the rest of the sub-directories under the root directory “MyXxxProject” are configured as other modules just beneath it:
```
…
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/subDir1/subDir1.iml" filepath="$PROJECT_DIR$/subDir1/subDir1.iml" />
<module fileurl="file://$PROJECT_DIR$/subDir2/subDir2.iml" filepath="$PROJECT_DIR$/subDir2/subDir2.iml" />
…
</modules>
</component>
```
Does this setup look right? In particular, I'm concerned that the root directory itself is a module.
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Yes, this setup is technically possible, but it’s usually not the most practical approach. In most cases, the root directory works better as a container, while sub-directories are treated as independent modules. Keeping the root as a module can sometimes create unnecessary complexity unless it has its own code or shared logic.
A better approach is to keep modules clean and purpose-based. You can even use Free GPT to review your project structure, suggest better modularization, or identify redundant configurations quickly. It helps simplify decisions, especially in complex multi-module setups.
Hi Qazwsxqazwsxqazwsx,
Sorry for the delay in replying to your question.
This setup can be valid: the project root may be a module, and its subdirectories may also be separate modules.
The important part is to avoid overlapping content roots. If the root module uses the whole project directory as its content root, then the submodule directories should be excluded from that root module; otherwise, they are treated both as part of the root module and as separate modules.
So in your case, I would recommend excluding the submodule folders from the root module and keeping those folders as content roots of their own modules only. This will make the project structure clearer and avoid configuration conflicts.
If you can upload a sample project to our server https://uploads.jetbrains.com/ and provide us with the Upload ID, we can take a look at your exact project structure and provide some recommendations based on it if you experience any issues.