[new script] is dark_mode mac

[texastoland]

Looking for feedback before PR.

Proposal

export def 'is dark_mode mac' []: nothing -> bool {
  do { ^defaults read -g AppleInterfaceStyle } | complete | $in.exit_code == 0
}

# in my config.nu
if not (mac is_dark_mode) {
  print 'Light theme enabled 🔆'
  $env.config.color_config = $light_theme
}

How it works in Bash

> # light mode: errors and stderr
> defaults read -g AppleInterfaceStyle
defaults[49472:1750663] 
The domain/default pair of (kCFPreferencesAnyApplication, AppleInterfaceStyle) does not exist

> # dark mode: stdout
> defaults read -g AppleInterfaceStyle
Dark

Example alias from my global Git config:

[alias]
delta = !delta $(defaults read -g AppleInterfaceStyle &>/dev/null || echo --light)

[texastoland]

Closing in favor of is.nu PR.

Related to https://discord.com/channels/601130461678272522/1192287307215147098.