internal-package-building

Organize internal Go packages by creating dedicated directories under internal/ for each domain, ensuring package names match their directories and routing all entry points through cmd/ to enforce clean import paths. This prevents external modules from importing internal domain logic.

Create a new internal package when introducing a distinct domain boundary, and extend an existing package when adding features within the same domain. This keeps domain boundaries clear and predictable, preventing bloated packages and import path conflicts.

The cmd directory serves as the entry point for executable binaries, while the internal directory restricts import access to the parent module. Routing through cmd/ ensures internal package boundaries remain unexposed to external import paths.

Structure a Go monorepo by placing shared logic into distinct internal/ directories such as internal/db, internal/models, and internal/evaluator. This enforces clear boundaries and predictable import paths across the repository.

No external dependencies are required to enforce internal package boundaries. Go's compiler natively restricts imports from the internal/ directory, allowing you to structure domains and route entry points through cmd/ using standard library features.