# Nix Configuration

Flake-based NixOS configuration with home-manager.

## Commands

### Daily Use
```bash
# System rebuild
sudo nixos-rebuild switch --flake .#<host>
# or use alias: oss

# Home Manager
home-manager switch --flake .#yanlin@<host>
# or use alias: hms
# the full switch alias `fs` will perform system rebuild then home manager switch

# Update flake
nix flake update
```

### Occasional Commands
```bash
# Garbage collection
nix-collect-garbage -d
sudo nix-collect-garbage -d

# Check flake
nix flake check
nix flake show

# Search packages
nix search nixpkgs <package>

# Rollback
sudo nixos-rebuild switch --rollback

# Build without switching
nixos-rebuild build --flake .#<host>
```

## Structure

```
.
├── flake.nix           # Entry point
├── hosts/
│   └── nixos/          # NixOS configurations
│       ├── system-default.nix
│       ├── home-default.nix
│       └── <host>/
├── modules/            # Reusable modules
├── config/             # Static config files
└── scripts/            # Helper scripts
```

## Workflows

### Project Management
`proj` - Launch tmux sessions from `config/projects.json`

### Quick Aliases
- `hms` - Rebuild home-manager
- `oss` - Rebuild NixOS system
- `cdf` - Interactive file search with cd
- `pwdf` - Get file path interactively
- `zi` - Interactive zoxide with fzf

### Tmux Reminders
- Prefix: `Ctrl-a`
- Split: `|` and `-`
- Navigate: `hjkl`
- Resize: `HJKL`

## Service Management (NixOS)

```bash
# Check service status
systemctl status <service>
journalctl -u <service> -f

# Container management
podman ps  # Actually podman
podman logs <container>
podman exec -it <container> bash

# Systemd timers
systemctl list-timers
```