| # Target-side realms for tools |
| Toolbox is designed as a place to represent the needs of tools connecting to a |
| Fuchsia device. Capabilities needed by tools are routed to the toolbox realm |
| and then tools can access this realm to use the capabilities. |
| |
| The toolbox realm solves a platform evolution and stability challenge by |
| creating an explicit, intentional location to make available capabilities |
| intended for use by tools. Without a location the tools resort to connecting |
| directly to the components that implement the capabilities the tools need. This |
| creates a tight coupling between tool versions and platform versions, thereby |
| making it difficult to reorganize the the platform component topology while |
| maintaining compatibility. With the toolbox realm the platform component |
| topology can change almost at will so long as capabilities are updated to |
| preserve availability of capabilities in the toolbox realm. |
