---
title: "2026-09-18 NanoVirDx domain representation implementation review"
description: "Reviewed the minimal NanoVirDx adapter contract for Histo 0.0.127 process_scan."
image: "https://docs.virdx.dev/img/virdx-social-card.png"
---

> Documentation Index
> Fetch the complete documentation index at: https://docs.virdx.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# 2026-09-18 NanoVirDx domain representation implementation review

## Work Done

- Inspected NanoVirDx dataclasses, inference base class, README, packaging, and the in-progress Histo domain-representation adapter.
- Verified the Histo 0.0.127 `process_scan` signature and its five fixed OME-Zarr outputs.
- Confirmed that the 0.0.127 wheel omits the repository-level Hydra config, so a packaged flattened fine28/local config is needed for a default NanoVirDx adapter.
- Recommended lazy Histo imports for macOS importability, five-artifact batch validation, a README correction, and small adapter/dataclass contract tests.
- No monorepo files were edited.

## Lessons Learned: Pitfalls

- The local Histo worktree is two commits beyond the 0.0.127 tag and has unrelated working changes. Inspecting the tag explicitly was necessary to avoid reporting a newer API.
- Listing NanoVirDx recursively without pruning `.pixi` produced excessive generated-file output. Future inspection should prune generated directories first.

## Lessons Learned: Improvements

- Document in the Histo package/release notes whether runtime config is included in wheels. Consumers otherwise must discover the missing config only after installation.
- NanoVirDx should have a small test target that can validate lazy optional-platform adapters without installing their Linux-only dependencies.

Source: https://docs.virdx.dev/knowledge/inbox/2026-09-18-histo-nanovirdx-domainrep-implementation-review/index.mdx