A short ruby script to cross platform a golang project

godist.rb

#! /usr/bin/env ruby

if not ARGV[0] or ARGV[0] == "-h"
  puts "Usage: ./go_dist <project>"
  exit
end
project_path = ARGV[0]
project = project_path.split('/')[-1]
puts "\e[1mStarting distribution of \e[32m'#{project}'\e[0m"
platforms = {
  "darwin" => ["amd64"],
  "windows" => ["amd64", "386"],
  "linux" => ["amd64", "386", "arm"] 
}
platforms.each do |os, array|
  exe = project
  if os == "windows"
    exe += ".exe"
  end
  array.each do |arch|
    output = `env GOOS=#{os} GOARCH=#{arch} go build #{project_path} && echo "success"`
    if output.include? 'success'
      `mkdir -p $GOPATH/dist/#{project}/#{os}-#{arch}/`
      `mv #{exe} $GOPATH/dist/#{project}/#{os}-#{arch}/`
      puts "Compiled binary for \e[35m#{os}-#{arch}\e[0m"
    else
      puts "Build failed for \e[31m#{os}-#{arch}\e[0m"
    end
  end
end