checkmate

What it does

checkmate provides a standardized CI pipeline for Nix projects:

Formatting — nixfmt, deadnix, mdformat, yamlfmt via treefmt
Unit testing — nix-unit integration with the target flake as inputs.target
Zero setup — just point it at your flake
GitHub CI template — one command generates a complete CI workflow
Extensible — add custom checks via Dendritic modules

Usage

# Check a flake
nix flake check github:vic/checkmate --override-input target .

# Format code
nix run github:vic/checkmate#fmt --override-input target .

# Bootstrap CI for your project
nix flake new -t github:vic/checkmate ./checkmate

Who uses it

Every project in the Dendritic ecosystem uses checkmate for CI — den, flake-aspects, flake-file, dendrix, and import-tree.

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