Python 2: Fix installing from source (#2298)

* Python 2: Fix installing from source

`python2.7 -m pip install git+https://github.com...`  doesn't install
any packages.

The auto-discovery doesn't work for the old setuptools version used in
Python 2.
https://setuptools.pypa.io/en/latest/userguide/package_discovery.html#flat-layout

* Use Python 3 commandline tools in Docker images

Since the Python 2 version was installed first, the Python 3 install
didn't touch the existing shell script wrapper files.

Author: peace-maker

MANIFEST.in

@@ -6,4 +6,4 @@ include *.md *.txt *.sh *.yml MANIFEST.in
 recursive-include docs   *.rst *.png Makefile *.py *.txt
 recursive-include pwnlib *.py *.asm *.rst *.md *.txt *.sh __doc__ *.mako
 recursive-include pwn    *.py *.asm *.rst *.md *.txt *.sh
-recursive-exclude *.pyc
+global-exclude *.pyc

extra/docker/beta/Dockerfile

@@ -2,6 +2,6 @@ FROM pwntools/pwntools:stable
 
 USER root
 RUN python2.7 -m pip install --upgrade git+https://github.com/Gallopsled/pwntools@beta \
-    && python3 -m pip install --upgrade git+https://github.com/Gallopsled/pwntools@beta
+    && python3 -m pip install --force-reinstall --upgrade git+https://github.com/Gallopsled/pwntools@beta
 RUN PWNLIB_NOTERM=1 pwn update
 USER pwntools

extra/docker/dev/Dockerfile

@@ -2,6 +2,6 @@ FROM pwntools/pwntools:stable
 
 USER root
 RUN python2.7 -m pip install --upgrade git+https://github.com/Gallopsled/pwntools@dev \
-    && python3 -m pip install --upgrade git+https://github.com/Gallopsled/pwntools@dev
+    && python3 -m pip install --force-reinstall --upgrade git+https://github.com/Gallopsled/pwntools@dev
 RUN PWNLIB_NOTERM=1 pwn update
 USER pwntools

extra/docker/stable/Dockerfile

@@ -2,6 +2,6 @@ FROM pwntools/pwntools:base
 
 USER root
 RUN python2.7 -m pip install --upgrade git+https://github.com/Gallopsled/pwntools@stable \
-    && python3 -m pip install --upgrade git+https://github.com/Gallopsled/pwntools@stable
+    && python3 -m pip install --force-reinstall --upgrade git+https://github.com/Gallopsled/pwntools@stable
 RUN PWNLIB_NOTERM=1 pwn update
 USER pwntools

setup.py

@@ -3,14 +3,12 @@
 
 import glob
 import os
-import platform
-import subprocess
 import sys
-import traceback
 from distutils.command.install import INSTALL_SCHEMES
 from distutils.sysconfig import get_python_inc
 from distutils.util import convert_path
 
+from setuptools import find_packages
 from setuptools import setup
 
 # Get all template files
@@ -48,6 +46,7 @@
 if sys.version_info < (3, 4):
     import toml
     project = toml.load('pyproject.toml')['project']
+    compat['packages'] = find_packages()
     compat['install_requires'] = project['dependencies']
     compat['name'] = project['name']
     if '--user' in sys.argv: