CI Integration

GitHub Actions Setup

.github/workflows/architecture-check.yml

name: Architecture Check

on: [push, pull_request]

jobs:
  mille:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install mille (cargo)
        run: cargo install mille

      - name: Check architecture
        run: mille check --format github-actions

--format github-actions Output

Violations appear as annotations directly in PR code reviews:

::error file=src/usecase/order.rs,line=3::External violation: 'sqlx' is not allowed in 'usecase' (import: sqlx)
::error file=src/main.rs,line=15::Call pattern violation: 'find_user' is not in allow_methods

Output Formats

Format	Use Case
terminal (default)	Local development — readable output
github-actions	CI — PR review annotations
json	Tool integration — machine-readable

Gradual CI Adoption

Tip

For brownfield projects, use --fail-on and [severity] together for gradual enforcement.

Step 1: Start with warnings only

mille.toml

[severity]
dependency_violation = "warning"

- run: mille check --format github-actions
  # exits 0 — warnings shown but CI doesn't fail

Step 2: Enforce once violations are fixed

[severity]
dependency_violation = "error"

npm Install Example

- name: Install mille (npm)
  run: npm install -g @makinzm/mille

- name: Check architecture
  run: mille check --format github-actions

Exit Codes

Code	Meaning
0	No violations
1	Violations found
3	Configuration error