Merge pull request #156 from vasily-v-ryabov/cache_handling

Fix "pip install comtypes" error, add the test on AppVeyor

appveyor.yml

@@ -24,3 +24,5 @@ environment:
 
 test_script:
    - C:\%py%\python.exe setup.py install
+   - C:\%py%\Scripts\pip.exe uninstall comtypes -y
+   - C:\%py%\python.exe test_pip_install.py

comtypes/__init__.py

@@ -3,7 +3,7 @@
 import os
 
 # comtypes version numbers follow semver (http://semver.org/) and PEP 440
-__version__ = "1.1.5"
+__version__ = "1.1.6"
 
 import logging
 class NullHandler(logging.Handler):

setup.py

@@ -1,5 +1,4 @@
-"comtypes package install script"
-
+"""comtypes package install script"""
 import sys
 import os
 import ctypes
@@ -85,7 +84,6 @@ def read_version():
     # Determine the version number by reading it from the file
     # 'comtypes\__init__.py'.  We cannot import this file (with py3,
     # at least) because it is in py2.x syntax.
-    ns = {}
     for line in open("comtypes/__init__.py"):
         if line.startswith("__version__ = "):
             var, value = line.split('=')
@@ -94,6 +92,23 @@ def read_version():
 
 
 class post_install(install):
+
+    # both this static variable and method initialize_options() help to avoid
+    # weird setuptools error with "pip install comtypes", details are here:
+    # https://github.com/enthought/comtypes/issues/155
+    # the working solution was found here:
+    # https://github.com/pypa/setuptools/blob/3b90be7bb6323eb44d0f28864509c1d47aa098de/setuptools/command/install.py
+    user_options = install.user_options + [
+        ('old-and-unmanageable', None, "Try not to use this!"),
+        ('single-version-externally-managed', None,
+         "used by system package builders to create 'flat' eggs"),
+    ]
+
+    def initialize_options(self):
+        install.initialize_options(self)
+        self.old_and_unmanageable = None
+        self.single_version_externally_managed = None
+
     def run(self):
         install.run(self)
         # Custom script we run at the end of installing - this is the same script

test_pip_install.py

@@ -0,0 +1,24 @@
+"""This test covers 'pip install' issue #155"""
+import os
+import sys
+import subprocess
+
+def read_version():
+    # Determine the version number by reading it from the file
+    # 'comtypes\__init__.py'.  We cannot import this file (with py3,
+    # at least) because it is in py2.x syntax.
+    for line in open("comtypes/__init__.py"):
+        if line.startswith("__version__ = "):
+            var, value = line.split('=')
+            return value.strip().strip('"').strip("'")
+    raise NotImplementedError("__version__ is not found in __init__.py")
+
+# prepare the same package that is usually uploaded to PyPI
+subprocess.check_call([sys.executable, 'setup.py', 'sdist', '--format=zip'])
+
+filename_for_upload = 'comtypes-%s.zip' % read_version()
+target_package = os.path.join(os.getcwd(), 'dist', filename_for_upload)
+
+# run "pip install comtypes-x.y.z.zip"
+pip_exe = os.path.join(os.path.dirname(sys.executable), 'Scripts', 'pip.exe')
+subprocess.check_call([pip_exe, 'install', target_package])