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CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Repository Purpose
+
+This repository contains a Nix home-manager flake configuration for setting up a user environment on a Linux system. It's designed for user `tbingmann` and includes configurations for Nix itself, Bash, direnv, Git, and other utilities. The configuration ensures Nix is properly installed and configured with experimental features enabled.
+
+## Code Architecture
+
+- **flake.nix**: The main Nix flake configuration file that defines inputs (dependencies) and outputs. It sets up the home-manager configuration for user `tbingmann`.
+- **home.nix**: Contains the actual home-manager configuration including:
+  - User information
+  - Nix installation and configuration with flakes support
+  - Package installations
+  - Bash configuration and customizations with Nix PATH setup
+  - Direnv setup
+  - Git configuration
+
+## Common Commands
+
+### Applying Configuration Changes
+
+After making changes to the configuration:
+
+```bash
+# If home-manager is not installed
+nix run github:nix-community/home-manager/release-25.05 -- switch --flake .#tbingmann
+
+# If home-manager is installed
+home-manager switch --flake .#tbingmann
+```
+
+### Direct Installation from Git Repository
+
+```bash
+# If home-manager is not installed
+nix --no-write-lock-file run github:nix-community/home-manager/release-25.05 -- switch --flake 'git+https://g.t1.xyz/tb/nix-ebay-home.git#tbingmann'
+
+# If home-manager is installed
+home-manager --no-write-lock-file switch --flake 'git+https://g.t1.xyz/tb/nix-ebay-home.git#tbingmann'
+```
+
+### Checking Configuration Validity
+
+To validate configuration changes without applying them:
+
+```bash
+home-manager build --flake .#tbingmann
+```
+
+### Debugging Issues
+
+For more detailed information when troubleshooting:
+
+```bash
+home-manager switch --flake .#tbingmann --debug
+```
+
+## Configuration Guidelines
+
+When modifying this repository:
+
+1. Update packages in the `home.packages` section of `home.nix`
+2. Customize Bash settings in the `programs.bash` section
+3. Add or modify program configurations under the `programs` attribute
+4. Adjust Nix configuration in the `nix` section if needed
+5. Ensure the username (`tbingmann`) is consistent throughout the configuration
+
+## Nix Configuration Details
+
+The configuration includes:
+
+1. **Installation of Nix packages**: The `nix` package itself, `nixpkgs-fmt`, and `nix-direnv`
+2. **Nix experimental features**: Enables both `nix-command` and `flakes` by default
+3. **PATH configuration**: Sets up proper Nix paths in the Bash environment
+4. **direnv integration**: Configured to work with Nix for project-specific environments