---

name: nix description: NixOS package management and dotfiles configuration. Activates for package install/remove/search, system updates, configuration changes, and Claude Code settings changes.

NixOS Package Management & Dotfiles

User input: $ARGUMENTS

Style

Comment sparingly in .nix files. Nix is declarative so code is self-documenting. Only add comments to:

• Delineate sections in long package lists
• Explain non-obvious workarounds
• Note dependencies between options that aren't apparent

Instructions

1. Read context: ~/Dotfiles/CLAUDE.md for layout

2. Parse request:

   • Install/remove package: Edit hosts/fw13/default.nix
   • Search: nix search nixpkgs <query>
   • Update: nix flake update then rebuild
   • Config changes: Edit appropriate module in modules/
   • Claude settings: Edit ~/Dotfiles/sources/claude/ (see below)

3. For packages:

   • Confirm package name: nix search nixpkgs <name>
   • Edit hosts/fw13/default.nix under home.packages

4. Apply: Run nrs

   • If rebuild fails, analyze error, fix, retry
   • Report success

5. Commit (after successful rebuild):

   • git add -A && git commit -m "..."
   • Ask before push

Package Locations

• User packages: hosts/fw13/default.nix → home.packages
• Flake inputs: flake.nix
• System services: modules/nixos/services.nix

Claude Code Settings

All Claude Code configuration is managed via Home Manager. Never edit ~/.claude/ directly - those files will be overwritten on rebuild.

Source of truth:

Copy~/Dotfiles/sources/claude/
├── CLAUDE.md           # Global context
├── settings.json       # Claude Code settings
├── commands/           # Slash commands
├── skills/             # Skills like this one
└── context/            # Shared context files

Workflow for Claude settings changes:

1. Edit the source file in ~/Dotfiles/sources/claude/
2. Run nrs to deploy

Examples:

• Modify settings: Edit ~/Dotfiles/sources/claude/settings.json
• Add command: Create ~/Dotfiles/sources/claude/commands/my-command.md
• Add skill: Create ~/Dotfiles/sources/claude/skills/skill-name/SKILL.md