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

NixOS Package Management

Help with NixOS configuration and package management.

User input: $ARGUMENTS

Instructions

1. Read context and config:

   • Read ~/Dotfiles/CLAUDE.md to understand the dotfiles layout
   • Read ~/Dotfiles/configuration.nix to see current packages
   • Read ~/Dotfiles/flake.nix if flake changes needed

2. Parse the request:

   • Install package: User wants to add a package (e.g., "install htop", "add nodejs")
   • Remove package: User wants to remove a package
   • Search: User wants to find a package (e.g., "search for video editor")
   • Update: User wants to update the system
   • Other: Configuration changes, services, etc.

3. For package install/remove:

   • Search nixpkgs to confirm exact package name: nix search nixpkgs <name>
   • Edit configuration.nix to add/remove from users.users.sasha.packages
   • Show the diff to user

4. For search:

   • Run nix search nixpkgs <query> and summarize results
   • Suggest the most relevant package(s)

5. For updates:

   • Run nix flake update in ~/Dotfiles
   • Then rebuild

6. Apply changes:

   • Run: nrs (alias for nixos-rebuild switch)
   • If rebuild fails:
     • Analyze the error output
     • Identify the root cause (missing dependency, syntax error, etc.)
     • Fix the issue and retry
     • Repeat until successful or user asks to stop
   • Report success

7. Update documentation:

   • If structural changes were made (new services, major packages), update ~/Dotfiles/CLAUDE.md

8. Commit changes (only after successful rebuild):

   • cd ~/Dotfiles
   • git add -A
   • git commit with a descriptive message (e.g., "Add htop package", "Update flake inputs")
   • Ask user: "Ready to push to remote?"
   • Only push if user confirms

Package Locations

• User packages: configuration.nix → users.users.sasha.packages
• System packages: configuration.nix → environment.systemPackages
• Flake inputs: flake.nix → for adding external flakes