Only use datafiles and initsys addon outside virtualenvs

To make it so that cloud-init is installable in a virtualenv
where it can be tested in an isolated scenario we need to avoid
using and including datafiles (which won't be written into the
virtualenv) and also avoid using our initsys helper class which
also adds on its own files when we are being ran from a virtualenv.

2 files changed, 38 insertions, 18 deletions

diff --git a/ChangeLog b/ChangeLog
index 1debc923..e861be23 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,7 @@
  - begin adding cloud config module docs to config modules (LP: #1383510)
  - retain trailing eol from template files (sources.list) when
    rendered with jinja (LP: #1355343)
+ - Only use datafiles and initsys addon outside virtualenvs
 0.7.6:
  - open 0.7.6
  - Enable vendordata on CloudSigma datasource (LP: #1303986)
diff --git a/setup.py b/setup.py
index bd41bc91..3e188089 100755
--- a/setup.py
+++ b/setup.py
@@ -23,6 +23,7 @@
 from glob import glob
 
 import os
+import sys
 
 import setuptools
 from setuptools.command.install import install
@@ -86,6 +87,17 @@ if os.uname()[0] == 'FreeBSD':
     ETC = "/usr/local/etc"
 
 
+# Avoid having datafiles installed in a virtualenv...
+def in_virtualenv():
+    try:
+        if sys.real_prefix == sys.prefix:
+            return False
+        else:
+            return True
+    except AttributeError:
+        return False
+
+
 def get_version():
     cmd = ['tools/read-version']
     (ver, _e) = tiny_p(cmd)
@@ -135,6 +147,29 @@ class InitsysInstallData(install):
         self.distribution.reinitialize_command('install_data', True)
 
 
+if in_virtualenv():
+    data_files = []
+    cmdclass = {}
+else:
+    data_files = [
+        (ETC + '/cloud', glob('config/*.cfg')),
+        (ETC + '/cloud/cloud.cfg.d', glob('config/cloud.cfg.d/*')),
+        (ETC + '/cloud/templates', glob('templates/*')),
+        (USR + '/lib/cloud-init', ['tools/uncloud-init',
+                                   'tools/write-ssh-key-fingerprints']),
+        (USR + '/share/doc/cloud-init', [f for f in glob('doc/*') if is_f(f)]),
+        (USR + '/share/doc/cloud-init/examples',
+            [f for f in glob('doc/examples/*') if is_f(f)]),
+        (USR + '/share/doc/cloud-init/examples/seed', 
+            [f for f in glob('doc/examples/seed/*') if is_f(f)]),
+    ]
+    # Use a subclass for install that handles
+    # adding on the right init system configuration files
+    cmdclass = {
+        'install': InitsysInstallData,
+    }
+
+
 setuptools.setup(name='cloud-init',
       version=get_version(),
       description='EC2 initialisation magic',
@@ -146,23 +181,7 @@ setuptools.setup(name='cloud-init',
                'tools/cloud-init-per',
                ],
       license='GPLv3',
-      data_files=[(ETC + '/cloud', glob('config/*.cfg')),
-                  (ETC + '/cloud/cloud.cfg.d', glob('config/cloud.cfg.d/*')),
-                  (ETC + '/cloud/templates', glob('templates/*')),
-                  (USR + '/lib/cloud-init',
-                    ['tools/uncloud-init',
-                     'tools/write-ssh-key-fingerprints']),
-                  (USR + '/share/doc/cloud-init',
-                   [f for f in glob('doc/*') if is_f(f)]),
-                  (USR + '/share/doc/cloud-init/examples',
-                   [f for f in glob('doc/examples/*') if is_f(f)]),
-                  (USR + '/share/doc/cloud-init/examples/seed',
-                   [f for f in glob('doc/examples/seed/*') if is_f(f)]),
-                 ],
+      data_files=data_files,
       install_requires=read_requires(),
-      cmdclass={
-          # Use a subclass for install that handles
-          # adding on the right init system configuration files
-          'install': InitsysInstallData,
-      },
+      cmdclass=cmdclass,
       )