cosmic-ext-wm-manager

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cosmic-ext-wm-manager

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Wayland-native workspace manager and session restore tool for the COSMIC Desktop. Automate window layouts, workspaces, and multi-monitor setups.

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# cosmic-wm-manager | COSMIC Desktop Workspace Manager & Session Restore

A Wayland-native session automation and workspace manager for the COSMIC Desktop environment. It helps you save, restore, and organize application window layouts dynamically across workspace groups and multiple monitors.

Built specifically for the COSMIC Desktop on Wayland (Pop!_OS), it integrates with the native compositor interfaces via `cos-cli` to provide robust, lightweight window manager utility and session restore.

## What It Does

`cosmic-wm` helps you:

- Launch a repeatable workspace setup from YAML profiles
- Save the current desktop session as a snapshot
- Restore saved sessions onto the right workspaces
- Route windows across outputs and workspace groups in COSMIC
- Reuse already-open matching windows during restore instead of blindly relaunching everything

It is built for COSMIC Desktop on Wayland and uses `cos-cli` to talk to the compositor.

## Current Behavior

- `start <profile>` launches apps from a profile and places matching windows
- `save <name>` captures open windows into a YAML session file
- `restore <name>` replays that session and skips relaunching windows that already match
- When only one window exists for an app ID, saved sessions prefer stable `app_id` matching over volatile titles
- When multiple windows share the same app ID, titles are kept to disambiguate them

## Installation

### Prerequisites

- **OS**: Pop!_OS / COSMIC Desktop on Wayland
- **Python**: Python 3.11+
- **Rust**: Rust toolchain (required to build the native Wayland helper `cos-cli`).
  > [!NOTE]
  > Don't have Rust installed? The installer script (`install.sh`) will automatically detect this and offer to securely download and install it for you during setup.

### Setup

Clone the repository and run the installer script:
```bash
git clone git@github.com:Izume01/cosmic-ext-wm-manager.git cosmic-session-manager
cd cosmic-session-manager
./install.sh
```

The installer script automatically handles:
- **Rust Toolchain**: Checks for and (optionally) installs Rust/Cargo.
- **Wayland Native Helper**: Builds or updates `cos-cli` to enable communication with the COSMIC compositor.
- **Python Environment**: Creates a dedicated `.venv` virtual environment and upgrades pip.
- **Package Installation**: Installs `cosmic-session-manager` in editable development mode.
- **Global Launcher**: Writes a global shortcut launcher to `~/.local/bin/cosmic-wm`.

> [!IMPORTANT]
> Make sure `~/.local/bin` is in your system's `$PATH` variable so you can run the `cosmic-wm` commands from anywhere!

## Usage

Start a profile:

```bash
cosmic-wm start dev
```

Save the current session:

```bash
cosmic-wm save coding
```

Restore a saved session:

```bash
cosmic-wm restore coding
```

Show current windows and workspaces:

```bash
cosmic-wm status
```

Enable restore on login:

```bash
cosmic-wm autostart --enable
```

Rebuild the helper after COSMIC changes:

```bash
cosmic-wm update
```

## Profile Format

Profiles live in `~/.config/cosmic-wm-manager/profiles/`.

Example:

```yaml
name: work
description: Daily development setup

monitors:
  - output: eDP-1
    primary: true
    workspace_count: 4

apps:
  - command: "kitty --title backend"
    workspace: 1
    match:
      class: kitty
      title: backend

- command: code
    workspace: 2
    match:
      class: code

- command: flatpak run com.discordapp.Discord
    workspace: 3
    match:
      class: discord
```

## Session Files

Saved sessions live in `~/.config/cosmic-wm-manager/sessions/`.

They are normal YAML files, so you can edit them manually. This is useful when:

- you want fewer duplicate windows restored
- a command needs to change
- a title-based match became too specific

If a session contains two `code` entries, restore will still open two VS Code windows by design.

## Matching Rules

Supported match fields:

- `class`: COSMIC app ID / window class
- `title`: regex or case-insensitive substring
- `process_name`: process-level fallback matching

Matching is intentionally conservative:

- exact configured windows are matched first
- some title drift can fall back to `app_id`-only matching
- existing matching windows are reused during restore

## Troubleshooting

`Workspace not found`

- usually means COSMIC has not materialized the next workspace yet
- the current implementation steps through workspace growth instead of jumping past the current tail

Duplicate windows after restore

- check the session YAML first
- repeated `restore` runs should now reuse matching windows instead of reopening them
- if duplicates still happen, the saved match rule is probably too specific or the app title changed

Launcher still shows closed apps

- `cosmic-wm` does not maintain its own launcher history
- if closed apps still appear in COSMIC's launcher or app switcher, that is likely compositor or desktop-shell state rather than this tool's session list

## Development

Additional docs:

- [Architecture](docs/ARCHITECTURE.md)
- [Sessions and matching](docs/SESSIONS.md)

Run tests with the project virtualenv:

```bash
.venv/bin/python -m unittest tests/test_window_routing.py
```

Key modules:

- `cosmic_wm_manager/cli/main.py`
- `cosmic_wm_manager/persistence/session.py`
- `cosmic_wm_manager/retry_engine/poll.py`
- `cosmic_wm_manager/adapters/cosmic.py`

## License

This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for the full text.

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