nix-flake-parts

What problem does it solve?

This Skill standardizes Nix flake architecture using flake-parts and git-hooks.nix, enabling modular composition, reproducible development shells, and integrated pre-commit hooks for all projects. It simplifies complex flake management and ensures consistent tooling.

Core Features & Use Cases

• Modular Flake Structure: Guides on organizing flake.nix with separate modules for devshells, Darwin, and NixOS configurations, promoting clean separation of concerns.
• perSystem & withSystem: Patterns for accessing system-specific contexts and packages, replacing the deprecated forAllSystems helper for improved clarity and type safety.
• Integrated Pre-commit Hooks: Configures git-hooks.nix for automatic formatting (nixfmt-rfc-style), linting (deadnix, statix), and static analysis within the development shell.
• Use Case: A developer needs to create a new Nix project that supports both macOS and Linux development. They can use this skill to set up a flake-parts based flake.nix, define a devShells.nix with pre-commit hooks, and add system-specific configurations for both platforms.

Quick Start

Migrate the existing 'flake.nix' to use 'flake-parts', moving the development shell definition to 'flake/devshells.nix' and integrating 'nixfmt-rfc-style' as a pre-commit hook.