Virtualenv: crash dengan Python 3.3 di Arch Linux

Jika saya menginstal Python 3.3 dari Arch Linux AUR dan kemudian mencoba membuka virtualenv, saya mendapatkan crash ini:

$ virtualenv -p python3.3 /tmp/foo
Running virtualenv with interpreter /usr/bin/python3.3
Using base prefix '/usr'
New python executable in /tmp/foo/bin/python3.3
Also creating executable in /tmp/foo/bin/python
Installing setuptools, pip, wheel...
  Complete output from command /tmp/foo/bin/python3.3 - setuptools pip wheel:
  Traceback (most recent call last):
  File "<stdin>", line 7, in <module>
  File "/usr/lib/python3.5/site-packages/virtualenv_support/pip-8.1.0-py2.py3-none-any.whl/pip/__init__.py", line 15, in <module>
  File "/usr/lib/python3.5/site-packages/virtualenv_support/pip-8.1.0-py2.py3-none-any.whl/pip/vcs/subversion.py", line 9, in <module>
  File "/usr/lib/python3.5/site-packages/virtualenv_support/pip-8.1.0-py2.py3-none-any.whl/pip/index.py", line 30, in <module>
  File "/usr/lib/python3.5/site-packages/virtualenv_support/pip-8.1.0-py2.py3-none-any.whl/pip/wheel.py", line 39, in <module>
  File "/usr/lib/python3.5/site-packages/virtualenv_support/pip-8.1.0-py2.py3-none-any.whl/pip/_vendor/distlib/scripts.py", line 14, in <module>
  File "/usr/lib/python3.5/site-packages/virtualenv_support/pip-8.1.0-py2.py3-none-any.whl/pip/_vendor/distlib/compat.py", line 66, in <module>
ImportError: cannot import name HTTPSHandler
----------------------------------------
...Installing setuptools, pip, wheel...done.
Traceback (most recent call last):
  File "/usr/lib/python3.5/site-packages/virtualenv.py", line 2311, in <module>
    main()
  File "/usr/lib/python3.5/site-packages/virtualenv.py", line 703, in main
    symlink=options.symlink)
  File "/usr/lib/python3.5/site-packages/virtualenv.py", line 936, in create_environment
    download=download,
  File "/usr/lib/python3.5/site-packages/virtualenv.py", line 892, in install_wheel
    call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)
  File "/usr/lib/python3.5/site-packages/virtualenv.py", line 787, in call_subprocess
    % (cmd_desc, proc.returncode))
OSError: Command /tmp/foo/bin/python3.3 - setuptools pip wheel failed with error code 1

Ada beberapa diskusi di komentar pada paket AUR itu tentang berbagai flag build yang terkait dengan SSL. Saya mendapat kesan bahwa paket itu sendiri perlu diperbaiki, jadi crash ini bukan kesalahan virtualenv. Namun, alangkah baiknya jika virtualenv mengetahui potensi kesalahan ini, dan dapat mencetak pesan yang bermanfaat. Sesuatu seperti "Paket Sesuatu Sesuatu hilang, mungkin karena versi Python Anda dibuat tanpa BlahBlahSSL. Virtualenv tidak mendukung itu."