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feat(graph): pipeline graph improvements — on_failure, tooltips, bus-bar connectors, skipped colouring, HTML and Mermaid output
- when: on_failure visual distinction: red circle (#d9534f), X-mark icon, dashed
  chip border, and Mermaid classDef; legend entry added
- Job tooltip / detail panel: each chip wrapped in <g data-job="…"><title>…</title>
  <desc>…</desc> so SVG viewers and the HTML sidebar show stage, when, image, needs
- Multi-job connector accuracy: classic mode now uses a bus-bar pattern (vertical
  rail at midpoint + per-job stubs) instead of one center-to-center line per stage pair
- Blocked/skipped state colouring: RenderPipeline and pipelineSVG accept
  *cicontext.Context; skipped jobs rendered in grey (#868686) with dimmed text
- Interactive HTML output (--format html): self-contained .html with inline SVG,
  mouse-wheel zoom, drag-to-pan, double-click reset, and a click-to-open sidebar
- Mermaid pipeline output (--format mermaid): prints existing Pipeline() flowchart
  to stdout; suitable for mermaid.live or Markdown embedding
- imageString() helper to extract image name from string or map form
- 100% statement coverage maintained; 809 tests pass

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-06-25 00:56:06 +02:00

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<p align="center">
<img src="assets/glint-logo.png" alt="glint logo" width="220" />
</p>
<h1 align="center">glint</h1>
<p align="center">
<a href="LICENSE"><img src="https://img.shields.io/badge/license-Apache%202.0-blue.svg" alt="License"></a>
<a href="CHANGELOG.md"><img src="https://img.shields.io/badge/release-v0.2.25-blue.svg" alt="Release"></a>
</p>
> **Disclaimer:** This tool was built through iterative AI-assisted development with [Claude](https://claude.ai). It is experimental, incomplete, and not intended for production use. Coverage of GitLab CI keywords is best-effort and may lag behind GitLab's evolving spec. Use it at your own discretion — no correctness guarantees are made. Contributions and bug reports are welcome.
A local tool to validate and lint `.gitlab-ci.yml` pipelines without needing a GitLab server.
## What it does
- **Lints** — 43 rules covering pipeline structure, keyword constraints, `needs:`/`dependencies:` graphs, expression reachability, and deprecations (GL001GL043); run `glint explain <ID>` for any rule
- **Resolves includes** — local files, HTTPS URLs, GitLab project templates, and CI/CD Catalog components, with offline cache support
- **Simulates context** — `--branch`, `--tag`, `--source` flags evaluate `rules:if:` and `only`/`except` to show which jobs would be active, manual, or skipped; `--context branch=main --context branch=develop` prints a multi-column comparison table across multiple contexts in one run
- **Multiple output formats** — `--format text` (default, ruff-style), `json`, `sarif` (GitHub Code Scanning / GitLab SAST), `junit`, `github` (PR annotations)
- **Project config** — `.glint.yml` for rule suppression, severity overrides, token/URL defaults; `# glint: ignore RULE` for per-job inline suppression
- **Graph visualization** — `glint graph` prints a terminal job tree; `glint graph pipeline` renders a GitLab CI-style SVG/PNG; `--format mermaid` emits a Mermaid flowchart; `--format html` produces a self-contained HTML file with pan/zoom and a job-detail sidebar; context flags grey out skipped jobs
See [FEATURES.md](FEATURES.md) for the complete feature reference and lint rules table, and [ROADMAP.md](ROADMAP.md) for planned improvements.
## Requirements
- Go 1.21 or later
- [Task](https://taskfile.dev) (optional, for development tasks)
## Installation
```bash
git clone https://git.k3nny.fr/glint
cd glint
go build -o glint ./cmd/glint/...
```
Or with Task:
```bash
task build
```
## Usage
```
glint [OPTIONS] <COMMAND>
Commands:
check Lint a pipeline file — exits 0 (clean) or 1 (errors found)
graph Visualise the pipeline as a job tree or Mermaid graph
explain Print description and fix for a lint rule
```
Run `glint <command> --help` for all flags. See [USAGE.md](USAGE.md) for full
examples covering output formats, context simulation, remote includes, cache,
graph modes, and project configuration.
## Development
This project uses [Task](https://taskfile.dev) as a task runner.
```bash
task # list available tasks
task build # compile the binary
task test # run Go unit tests
task lint-go # run go vet
task validate # run the binary against all testdata fixtures
task ci # full check: vet → test → build → validate
task build-windows # cross-compile for Windows x64 (requires a tagged commit → glint-<tag>.exe)
task build-linux # cross-compile for Linux x64 (requires a tagged commit → glint-<tag>-linux-amd64)
task clean # remove build artifacts
```
## Project structure
```
.
├── cmd/glint/ # CLI entrypoint
├── internal/
│ ├── cicontext/ # CI variable context, rules:if: evaluator, job reachability
│ ├── fetcher/ # GitLab API client (project include fetching)
│ ├── graph/ # Mermaid and SVG/PNG graph generators
│ ├── linter/ # lint rules and findings
│ ├── model/ # pipeline data structures and YAML parser
│ └── resolver/ # extends: resolution and project include merging
├── testdata/ # sample pipelines used for manual validation
├── Taskfile.yml
└── go.mod
```