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# niri-workspaces-rs
A fast, event-driven workspace indicator for [Waybar](https://github.com/Alexays/Waybar) and [niri](https://github.com/YaLTeR/niri).
## Features
- **Visual bars** instead of numbers - each window is a colored bar
- **Color-coded by app** - Chrome (Google colors), Discord (purple), Firefox (orange), nvim (green), Claude (orange), Codex (cyan)
- **Terminal app detection** - detects Claude/Codex/nvim running inside terminals via /proc
- **Focused window indicator** - █ for focused, ▌ for would-be-focused, | for others
- **Dimmed unfocused workspaces** - colors are dimmed when workspace isn't focused
- **Daemon mode** - persistent socket connection, no process spawning
## Benchmarks
| Metric | Value |
|--------|-------|
| Memory | 2.5 MB RSS |
| CPU per update | ~1.1ms |
| 80 rapid switches | ~90ms total CPU |
### Comparison
| Approach | CPU per update |
|----------|---------------|
| Bash script | ~340ms |
| Rust + signal | ~12-14ms |
| Rust daemon | **~1.1ms** |
The daemon is **~10-12x faster** than the signal-based approach and **~300x faster** than the original bash script.
## Installation
```bash
cargo build --release
cp target/release/niri-workspaces ~/.config/waybar/
```
## Waybar Configuration
```json
"custom/workspaces": {
"exec": "/home/user/.config/waybar/niri-workspaces",
"return-type": "json",
"format": "{}"
}
```
No `interval` or `signal` needed - the daemon outputs JSON whenever workspace/window events occur.
## License
MIT
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