fix(build,#119,#155): use setuptools-entry-points instead of console-…

…script...

to fix launching on Windows.
Also this is now the officially "blessed" way to generated executables:
  https://packaging.python.org/guides/distributing-packages-using-setuptools/#scripts

pycallgraph/__main__.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+"""
+pycallgraph
+This script is the command line interface to the pycallgraph Python library.
+
+See http://pycallgraph.slowchop.com/ for more information.
+"""
+import sys
+import os
+
+def main():
+    import pycallgraph
+
+    config = pycallgraph.Config()
+    config.parse_args()
+    config.strip_argv()
+
+    globals()['__file__'] = config.command
+
+    file_content = open(config.command).read()
+
+    with pycallgraph.PyCallGraph(config=config):
+        exec(file_content)
+
+
+if __name__ == '__main__':
+    ## Pep366 must always be the 1st thing to run.
+    if not globals().get('__package__'):
+        __package__ = "polyversion"  # noqa: A001 F841 @ReservedAssignment
+
+    main()

scripts/pycallgraph

@@ -4,6 +4,14 @@ pycallgraph
 This script is the command line interface to the pycallgraph Python library.
 
 See http://pycallgraph.slowchop.com/ for more information.
+
+.. deprecated:: > 1.0.1
+    Code here moved to :func:`pycallgraph.__main__.main()`
+    and now using setuptools console-script entry-points,
+    to properly install on Windows.
+    
+    - See https://github.com/gak/pycallgraph/issues/119
+    - See https://github.com/gak/pycallgraph/issues/155
 """
 import sys
 import os

setup.py

@@ -6,6 +6,8 @@
 
 from setuptools.command.test import test as TestCommand
 
+## FIXME: importing my-package may fail if dependent projects
+#  from :mod:`./pycallgraph/__init__.py` are not installed yet at this stage!
 import pycallgraph
 
 # Only install the man page if the correct directory exists
@@ -40,7 +42,8 @@ def run_tests(self):
     license=open('LICENSE').read(),
     url=pycallgraph.__url__,
     packages=['pycallgraph', 'pycallgraph.output'],
-    scripts=['scripts/pycallgraph'],
+    entry_points={
+        'console_scripts': ['pycallgraph = pycallgraph.__main__:main']},
     data_files=data_files,
     use_2to3=True,