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Mycelix Health: Re-enablement Roadmap

Current State (Mar 2026)

Tier 1 MVP (7 active zomes): patient, provider, records, prescriptions, consent, bridge, shared Tier 2 Deferred (8 zomes, commented in Cargo.toml): trials, insurance, fhir_mapping, fhir_bridge, cds, provider_directory, telehealth, nutrition Tier 3 Archived (22 zomes in _archive-2026-02-15/): See archive README for full list

Architecture Notes

Health is currently a standalone DNA. When ready, add as a unified hApp role. Privacy considerations for production: separate validator sets, isolated DHT gossip.

Phase 1: Tier 1 Stabilization (Current)

  • 7 MVP zomes compile to wasm32-unknown-unknown
  • DNA packed: dna/health.dna
  • Standalone hApp manifest
  • Add sweettest integration tests (currently 25 unit test files, no conductor tests)
  • Wire to unified hApp as optional role (deferred: false but separate network_seed)
  • Security audit: is_finite() guards on all f64/f32 fields (follow commons pattern)

Phase 2: Tier 2 Re-enablement

Priority order based on clinical value and implementation complexity:

2a. FHIR Bridge (High Priority)

# 1. Uncomment in Cargo.toml
"zomes/fhir_mapping/integrity",
"zomes/fhir_mapping/coordinator",
"zomes/fhir_bridge/integrity",
"zomes/fhir_bridge/coordinator",

# 2. Update dna/dna.yaml
# Add fhir_mapping_integrity, fhir_bridge_integrity to integrity zomes
# Add fhir_mapping, fhir_bridge to coordinator zomes with dependencies

# 3. Verify compilation
cargo check --target wasm32-unknown-unknown

Why first: FHIR 4.0 (HL7) interop is table stakes for any health platform. Enables data exchange with existing EHR systems.

2b. Provider Directory + Telehealth

# Uncomment in Cargo.toml
"zomes/provider_directory/integrity",
"zomes/provider_directory/coordinator",
"zomes/telehealth/integrity",
"zomes/telehealth/coordinator",

Why second: Provider discovery + remote care are core workflow enablers.

2c. CDS + Nutrition + Insurance

# Uncomment remaining Tier 2 zomes
"zomes/cds/integrity",
"zomes/cds/coordinator",
"zomes/nutrition/integrity",
"zomes/nutrition/coordinator",
"zomes/insurance/integrity",
"zomes/insurance/coordinator",

Why third: Clinical Decision Support, dietary tracking, and insurance are value-adds on top of core workflows.

2d. Trials

"zomes/trials/integrity",
"zomes/trials/coordinator",

Why last in Tier 2: Clinical trials are specialized; most deployments won't need them initially.

Phase 3: Selective Tier 3 Restoration

Not all 22 archived zomes need restoration. Prioritize based on demand:

High Value (restore when needed)

  • Mental Health — Specialized assessments, therapy tracking
  • Chronic Care — Long-term condition management
  • SDOH — Social determinants of health (bridges to commons cluster)
  • Digital Twin — Patient simulation (bridges to Symthaea)

Medium Value (restore when needed)

  • Federated Learning — ML on health data (bridges to mycelix-fl-core)
  • Research Commons — De-identified data sharing
  • Population Health — Aggregate analytics
  • Immunity — Vaccination tracking

Low Priority (archive indefinitely)

  • HDC Genetics — Specialized, can stay in Symthaea
  • I18N — Localization (should be cross-cutting, not health-specific)
  • Mobile Support — Platform concern, not zome concern

Restoration Process (per zome)

# 1. Move from archive
mv _archive-2026-02-15/ZOME_NAME zomes/ZOME_NAME

# 2. Add to Cargo.toml workspace members
"zomes/ZOME_NAME/integrity",
"zomes/ZOME_NAME/coordinator",

# 3. Add to dna/dna.yaml
# integrity → name: ZOME_NAME_integrity, path: ../target/...
# coordinator → name: ZOME_NAME, dependencies: [ZOME_NAME_integrity]

# 4. Check compilation
cargo check --target wasm32-unknown-unknown

# 5. Run existing tests (if any)
cargo test --workspace

# 6. Add sweettest coverage
# Follow personal_workflow.rs pattern in mycelix-workspace/tests/sweettest/

Phase 4: Unified hApp Integration

When health is ready to join the unified hApp:

# Add to mycelix-unified-happ.yaml
  - name: health
    provisioning:
      strategy: create
      deferred: false
    dna:
      path: ./health/dna/health.dna
      modifiers:
        network_seed: ~
        properties: ~
      clone_limit: 0

Cross-cluster integration points:

  • Identity → Patient/provider DID verification
  • Civic/Emergency → Emergency medical escalation
  • Commons → Health-based resource allocation
  • Governance → Health policy proposals
  • Finance → Health service payments via TEND

Dependencies

  • Holochain 0.6.0 (current, compatible)
  • getrandom 0.3 with custom backend (see CLAUDE.md)
  • Separate flake: holonix/main-0.6 (health submodule has its own nix config)