Reducing that package into these lines only are also enough to break it:
"""This package augments the default build system."""
import sublime
import sublime_plugin
import re
import importlib
defaultExec = importlib.import_module("Default.exec")
class ExecCommand(defaultExec.ExecCommand):
"""This class extends the default build system."""
def on_finished(self, proc):
"""It is the entry point after the process is finished."""
super(ExecCommand, self).on_finished(proc)
Reducing that package into these lines only are also enough to break it: