old_contents: from __future__ import absolute_import
  import subprocess
  
  from conda.cli import main_list
  
  
  def install(prefix, specs, args, env):
      pip_cmd = main_list.pip_args(prefix) + ['install', ] + specs
      process = subprocess.Popen(pip_cmd, universal_newlines=True)
      process.communicate()
  
new_contents: from __future__ import absolute_import
  import subprocess
  
  from conda.pip import pip_args
  
  
  def install(prefix, specs, args, env):
      pip_cmd = pip_args(prefix) + ['install', ] + specs
      process = subprocess.Popen(pip_cmd, universal_newlines=True)
      process.communicate()
  
subject: Fix import error. Closes #174