# noctalia-greeter

A QuickShell QML login greeter for [greetd](https://git.sr.ht/~kennylevinsen/greetd), styled to match the [noctalia-shell](https://github.com/nocturnalastro/noctalia-shell) lockscreen.

## Architecture

```
greetd (VT7, _greeter user)
  └── dbus-run-session niri --config /etc/greetd/niri-greeter.kdl
        └── /etc/greetd/start-greeter.sh
              └── qs -c ~/.config/noctalia-greeter/   (shell.qml)
                    reads /var/lib/noctalia-greeter-theme/{colors.json,wallpaper.jpg}

noctalia-greeter-sync (runit, moze user)
  inotifywait ~/.config/noctalia/ + ~/.cache/noctalia/
    → copies colors.json + wallpaper on any noctalia style change
    → writes to /var/lib/noctalia-greeter-theme/ (world-readable)
```

The `_greeter` user never touches `/home/moze`. Theme data is staged to a world-readable directory by the sync service running as moze.

## Files

| Source | Deployed to |
|--------|-------------|
| `shell.qml` | `~/.config/noctalia-greeter/shell.qml` |
| `sync/noctalia-greeter-sync` | `/usr/local/bin/noctalia-greeter-sync` |
| `sync/run` | `/etc/sv/noctalia-greeter-sync/run` |
| `greetd/niri-greeter.kdl` | `/etc/greetd/niri-greeter.kdl` |
| `greetd/start-greeter.sh` | `/etc/greetd/start-greeter.sh` |
| `greetd/config.toml.example` | `/etc/greetd/config.toml` (edit before deploying) |

## Install

```sh
sudo ./install.sh
```

Requires: `greetd`, `niri`, `quickshell` (`qs`), `dbus`, `inotify-tools`.

## Rollback

Edit `/etc/greetd/config.toml`:
```toml
[terminal]
vt = 7

[default_session]
command = "sway --config /etc/greetd/sway-greeter.conf"
user = "_greeter"
```

## Theme sync

Change colors/wallpaper in noctalia shell → greeter auto-updates next login (no restart needed).

The sync service watches:
- `~/.config/noctalia/colors.json`
- `~/.cache/noctalia/wallpapers.json`

## Tests

```sh
./test/check-syntax.sh
```