dark-mode-notify

A Swift program will run a command whenever the dark mode status changes on macOS. You can use it to change your vim color config automatically for example.

Installation

It's recommended to Homebrew to install this program:

brew install wangl-cc/loong/dark-mode-notify

Alternatively, you can clone this repository and run make install to build and install this program.

Usage

This program is can run once or as a daemon.

Run once

dark-mode-notify [<your-program> [args...]]

In this case, dark-mode-notify will run <your-program> once and exit. The [args...] are optional arguments to pass to <your-program>. And the environment variable DARKMODE passed to <your-program>, which is either 1 or 0 based on the appearance of macOS.

If you don't specify <your-program>, dark-mode-notify will try to run the $HOME/.config/dark-mode-notify/notify script.

Run as a daemon

dark-mode-notify --daemon [<your-program> [args...]]

If you run dark-mode-notify with the --daemon flag will be run as a daemon. The rest of the arguments are the same as the one-time run.

Once started as a daemon, dark-mode-notify will watch the dark mode status and run the program whenever the dark mode status changes.

Starting at login

If you want to run dark-mode-notify at login, it's recommended to use brew services:

brew services start wangl-cc/loong/dark-mode-notify

Make sure you have a notify script in $HOME/.config/dark-mode-notify/ directory.

Or you may need to create a launch agent file in ~/Library/LaunchAgents/ke.bou.dark-mode-notify.plist:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>ke.bou.dark-mode-notify</string>
    <key>KeepAlive</key>
    <true/>
    <key>StandardErrorPath</key>
    <string>----Path to a location----/dark-mode-notify-stderr.log</string>
    <key>StandardOutPath</key>
    <string>----Path to a location----/dark-mode-notify-stdout.log</string>
    <key>ProgramArguments</key>
    <array>
       <string>/usr/local/bin/dark-mode-notify</string>
       <string>--- Path to your script ---</string>
    </array>
</dict>
</plist>

And then load it with

launchctl load -w ~/Library/LaunchAgents/ke.bou.dark-mode-notify.plist

Credit

This script is a lightly modified version of https://github.com/mnewt/dotemacs/blob/master/bin/dark-mode-notifier.swift.