komorebi for Mac

Tiling Window Management for macOS.

Overview

komorebi for Mac is a tiling window manager that works as an extension to the standard macOS desktop environment.

komorebi for Mac aims to make as few modifications as possible to the operating system and desktop environment by default.

LGUG2Z/komorebi-for-mac is the public repository where versioned releases will be published.

KomoCorp/komorebi-for-mac is the private repository available to certain GitHub Sponsors tiers where ongoing development work happens and nightly releases are made available.

If you are reading this sentence on the public repository, komorebi for Mac has still not had its first versioned release. If you would like to try out this initial public snapshot, you can brew install lgug2z/tap/komorebi-for-mac or build from source, and then follow the quickstart.

Community

There is a Discord server available for komorebi-related discussion, help, troubleshooting etc. If you have any specific feature requests or bugs to report, please create an issue in this repository.

There is a YouTube channel where I post komorebi development videos, feature previews and release overviews. Subscribing to the channel (which is monetized as part of the YouTube Partner Program) and watching videos is a really simple and passive way to contribute financially to the development and maintenance of komorebi.

There is an Awesome List which showcases the many awesome projects that exist in the komorebi ecosystem.

Licensing for Personal Use

komorebi is educational source software.

komorebi is licensed under the Komorebi 2.0.0 license, which is a fork of the PolyForm Strict 1.0.0 license. On a high level this means that you are free to do whatever you want with komorebi for personal use other than redistribution, or distribution of new works (i.e. hard-forks) based on the software.

Anyone is free to make their own fork of komorebi with changes intended either for personal use or for integration back upstream via pull requests.

The Komorebi 2.0.0 License does not permit any kind of commercial use ( i.e. using komorebi at work).

Sponsorship for Personal Use

komorebi for Mac is a free and educational source project, and one that encourages you to make charitable donations if you find the software to be useful and have the financial means.

I encourage you to make a charitable donation to the Palestine Children's Relief Fund or to contribute to a Gaza Funds campaign before you consider sponsoring me on GitHub.

GitHub Sponsors is enabled for this project. Sponsors can claim custom roles on the Discord server, get shout outs at the end of komorebi-related videos on YouTube, gain the ability to submit feature requests on the issue tracker, and receive releases of komorebi with "easter eggs" on physical media.

If you would like to tip or sponsor the project but are unable to use GitHub Sponsors, you may also sponsor through Ko-fi, or make an anonymous Bitcoin donation to bc1qv73wzspc77k46uty4vp85x8sdp24mphvm58f6q.

Licensing for Commercial Use

A dedicated Individual Commercial Use License is available for those who want to use komorebi at work.

The Individual Commerical Use License adds “Commercial Use” as a “Permitted Use” for the licensed individual only, for the duration of a valid paid license subscription only. All provisions and restrictions enumerated in the Komorebi License continue to apply.

More information, pricing and purchase links for Individual Commercial Use Licenses can be found here.

Contribution Guidelines

komorebi for Mac is currently accepting minimally invasive bug fixes. Proposals for any other kind of contributions can be discussed with me on Discord.

If you would like to contribute to komorebi please take the time to carefully read the guidelines below.

Please see CONTRIBUTING.md for more information about how code contributions to komorebi are licensed.

Commit hygiene

• Flatten all use statements
• Run cargo +stable clippy and ensure that all lints and suggestions have been addressed before committing
• Run cargo +nightly fmt --all to ensure consistent formatting before committing
• Use git cz with the Commitizen CLI to prepare commit messages
• Provide at least one short sentence or paragraph in your commit message body to describe your thought process for the changes being committed

PRs should contain only a single feature or bug fix

It is very difficult to review pull requests which touch multiple unrelated features and parts of the codebase.

Please do not submit pull requests like this; you will be asked to separate them into smaller PRs that deal only with one feature or bug fix at a time.

If you are working on multiple features and bug fixes, I suggest that you cut a branch called local-trunk from master which you keep up to date, and rebase the various independent branches you are working on onto that branch if you want to test them together or create a build with everything integrated.

Refactors to the codebase must have prior approval

komorebi is a mature codebase with an internal consistency and structure that has developed organically over close to half a decade.

There are countless hours of live coding videos demonstrating work on this project and showing new contributors how to do everything from basic tasks like implementing new komorebic commands to distinguishing monitors by manufacturer hardware identifiers and video card ports.

Refactors to the structure of the codebase are not taken lightly and require prior discussion and approval.

Please do not start refactoring the codebase with the expectation of having your changes integrated until you receive an explicit approval or a request to do so.

Similarly, when implementing features and bug fixes, please stick to the structure of the codebase as much as possible and do not take this as an opportunity to do some "refactoring along the way".

It is extremely difficult to review PRs for features and bug fixes if they are lost in sweeping changes to the structure of the codebase.

Breaking changes to user-facing interfaces are unacceptable

This includes but is not limited to:

• All komorebic commands
• The komorebi.json schema
• The komorebi-application-specific-configuration schema

No user should ever find that their configuration file has stopped working after upgrading to a new version of komorebi.

More often than not there are ways to reformulate changes that may initially seem like they require breaking user-facing interfaces into additive changes.

For some inspiration please take a look at this commit which added the ability for users to specify colours in komorebi.json in Hex format alongside RGB.

There is also a process in place for graceful, non-breaking, deprecation of configuration options that are no longer required.

Logs and Debugging

Logs from komorebi will be appended to $HOME/Library/Application Support/komorebi/komorebi.log.$timestamp.

Whenever running the komorebic stop command or sending a Ctrl-C signal to komorebi directly, the komorebi process ensures that all hidden windows are restored before termination.

Panics and Deadlocks

If komorebi ever stops responding, it is most likely either due to either a panic or a deadlock. In the case of a panic, this will be reported in the log. In the case of a deadlock, there will not be any errors in the log, but the process and the log will appear frozen.

If you believe you have encountered a deadlock, you can compile komorebi with --features deadlock_detection and try reproducing the deadlock again. This will check for deadlocks every 5 seconds in the background, and if a deadlock is found, information about it will appear in the log which can be shared when opening an issue.

Window Manager State and Integrations

The current state of the window manager can be queried using the komorebic state command, which returns a JSON representation of the State struct.

This may also be polled to build further integrations and widgets on top of.

Window Manager Event Subscriptions

Unix Domain Sockets

It is possible to subscribe to notifications of every WindowManagerEvent and SocketMessage handled by komorebi using Unix Domain Sockets.

UDS are also the only mode of communication between komorebi and komorebic.

First, your application must create a socket in $HOME/Library/Application Support/komorebi. Once the socket has been created, run the following command:

komorebic subscribe-socket <your socket name>

If the socket exists, komorebi will start pushing JSON data of successfully handled events and messages as in the example above in the Named Pipes section.

Rust Client

It is possible to use the komorebi-client crate to subscribe to notifications of every WindowManagerEvent and SocketMessage handled by komorebi in a Rust codebase.

Below is a simple example of how to use komorebi-client in a basic Rust application.

// komorebi-client = { git = "https://github.com/LGUG2Z/komorebi-for-mac" }

use anyhow::Result;
use komorebi_client::Notification;
use komorebi_client::NotificationEvent;
use komorebi_client::UnixListener;
use komorebi_client::WindowManagerEvent;
use std::io::BufRead;
use std::io::BufReader;
use std::io::Read;

pub fn main() -> anyhow::Result<()> {
  let socket = komorebi_client::subscribe(NAME)?;

  for incoming in socket.incoming() {
    match incoming {
      Ok(data) => {
        let reader = BufReader::new(data.try_clone()?);

        for line in reader.lines().flatten() {
          let notification: Notification = match serde_json::from_str(&line) {
            Ok(notification) => notification,
            Err(error) => {
              log::debug!("discarding malformed komorebi notification: {error}");
              continue;
            }
          };

          // match and filter on desired notifications
        }
      }
      Err(error) => {
        log::debug!("{error}");
      }
    }
  }

}

Subscription Event Notification Schema

A JSON Schema of the event notifications emitted to subscribers can be generated with the komorebic notification-schema command.

Socket Message Schema

A JSON Schema of socket messages used to send instructions to komorebi can be generated with the komorebic socket-schema command.