py-mitmproxy 10.1 missing dependencies

[breiter (Brian Reiter)]

The py-mitmproxy package has an unsatisfied package dependency on netlib which is a current port. Installing netlib with pip resolves the problem below but then it complains that it also needs flask.

## As installed by MacPorts ##

$ mitmproxy
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/mitmproxy", line 3, in <module>
    from libmproxy import proxy, console, cmdline
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/libmproxy/proxy.py", line 4, in <module>
    from netlib import tcp, http, certutils, http_status, http_auth
ImportError: No module named netlib
$ mitmproxy
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/mitmproxy", line 3, in <module>
    from libmproxy import proxy, console, cmdline
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/libmproxy/proxy.py", line 4, in <module>
    from netlib import tcp, http, certutils, http_status, http_auth
ImportError: No module named netlib
$ mitmproxy
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/mitmproxy", line 3, in <module>
    from libmproxy import proxy, console, cmdline
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/libmproxy/proxy.py", line 4, in <module>
    from netlib import tcp, http, certutils, http_status, http_auth
ImportError: No module named netlib
$ mitmproxy
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/mitmproxy", line 3, in <module>
    from libmproxy import proxy, console, cmdline
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/libmproxy/proxy.py", line 4, in <module>
    from netlib import tcp, http, certutils, http_status, http_auth
ImportError: No module named netlib

## After sudo pip install netlib ##

$ mitmproxy
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/mitmproxy", line 3, in <module>
    from libmproxy import proxy, console, cmdline
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/libmproxy/proxy.py", line 5, in <module>
    import utils, flow, version, platform, controller
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/libmproxy/flow.py", line 11, in <module>
    import app
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/libmproxy/app.py", line 1, in <module>
    import flask
ImportError: No module named flask

## After sudo pip install flask ##

Note that flask installs dependent packages: flask, Werkzeug, Jinja2, itsdangerous, markupsafe.

After all these pip packages are manually installed, mimtproxy runs successfully.