Set up xbar dev env and build/run xbar

xbar-setup.sh

#!/usr/bin/env bash

set -eEuo pipefail

# Prep source code
unzip xbar-main.zip
git clone https://github.com/wailsapp/wails.git

# Install lastest wails prerelease
cd wails
git checkout feature/v2-mac
cd v2/cmd/wails
go install .
wails update -pre

# Go back to xbar
cd ../../../../xbar-main/app

# Build and run. After the initial run, this is
# the only command that needs to be repeated.
# xbar can be quit by selecting quit in the drop
# down menu, or Ctrl-C'ing the terminal window
# that pops up.
wails build && open build/darwin/desktop/xbar

# When you're all done, you can delete the directory
# ~/Library/Application Support/xbar, which is where
# plugins are installed, if you want to clean up.