brew/Library/Homebrew/postinstall.rb

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old_trap = trap("INT") { exit! 130 }
require "global"
require "debrew"
require "fcntl"
require "socket"
begin
error_pipe = UNIXSocket.open(ENV["HOMEBREW_ERROR_PIPE"], &:recv_io)
error_pipe.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)
trap("INT", old_trap)
formula = ARGV.formulae.first
formula.extend(Debrew::Formula) if ARGV.debug?
formula.run_post_install
rescue Exception => e
Marshal.dump(e, error_pipe)
error_pipe.close
exit! 1
end