irminsul 0.2.0

A documentation system for complex codebases. Enforces structural invariants in CI.

Irminsul

A documentation system for complex codebases. Designed to resist rot, scale with complexity, and survive philosophy shifts.

Irminsul is a Python CLI + composite GitHub Action that enforces structural invariants on your /docs tree in CI. The rules are simple: every fact has one home, every doc has one purpose, every cross-reference is bidirectional and machine-verifiable. The tool's job is to make sure those rules stay true while the codebase evolves.

Quickstart

pipx install irminsul
cd my-codebase
irminsul init

That scaffolds a 9-layer /docs skeleton, an irminsul.toml config, GitHub Actions workflows, and pre-commit hooks. Three commands, ten seconds, fully wired.

What it checks

Hard, blocking checks (deterministic, no LLM):

• Frontmatter validity — required fields present, enums valid, IDs match filenames
• Glob resolution — every describes glob resolves to ≥1 source file
• Coverage uniqueness — every source file is claimed by exactly one most-specific doc
• Internal link integrity — no broken [link](other.md) references
• Schema-leak detection — no class/type definitions in component docs (those belong in the generated reference layer)

CI integration

on: pull_request
jobs:
  docs:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with: { fetch-depth: 0 }
      - uses: huajie-zhong/irminsul@v0.1.0
        with:
          scope: hard

irminsul init writes this file for you.

License

AGPL-3.0-or-later. See LICENSE.

Reference

The full architectural reference for the doc system Irminsul enforces lives in docs/90-meta/doc-system.md.