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Table 18 age-band roof defaults assume joist insulation >= 100mm, which mis-rates heritage roofs the surveyor explicitly described as uninsulated. u_roof now reads roofs[i].description and routes "no insulation" / "uninsulated" -> 2.30 W/m^2K and "limited insulation" -> 1.50 W/m^2K, threaded through envelope_heat_loss_w_per_k via a single joined description string off the top-level roofs list. Explicit insulation_thickness_mm still wins over description. |
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|---|---|---|
| .. | ||
| domain | ||
| fetchers | ||
| repos | ||
| utils | ||
| README.md | ||
Shared packages
Workspace packages consumed by services/*. Each package is its own Python distribution with its own pyproject.toml; services import via the workspace dependency mechanism ({ workspace = true }).
| Package | Purpose |
|---|---|
domain/ |
Shared domain types — Property, BaselinePerformance, Plan, Scenario, EpcPropertyData, etc. No persistence, no IO, no business logic. |
repos/ |
Persistence layer — one repo per aggregate. Owns the SQL. Depends on domain. |
fetchers/ |
External API clients (gov EPC, Ofgem, Google Solar, etc.). Depend on domain for response shapes. |
utils/ |
Cross-cutting infra — logging, S3, CloudWatch URL builders, SQS task helpers. |
Adding a new shared package
Only when a real second consumer materialises. Don't pre-shatter (repos-epc, repos-property, ...) — split when a deployment needs to drop a dep, not before.
See ../ara_backend_design.md §11 for the broader monorepo layout and ../CONTEXT.md for the domain glossary that names the types living in domain/.