Merge pull request #217 from brunobeltran/building2

BUILDING: pip and pip3 should work sanely

Author: isbadawi

README.md

@@ -22,30 +22,12 @@ Matlab code together (requires ipython > 0.13).
 `pymatbridge` can be installed from [PyPI][1]:
 
 ```
-$ pip install pymatbridge  # sudo may be needed
-```
-
-`pymatbridge` communicates with Matlab using zeromq. So before installing
-pymatbridge you must have [zmq](http://zeromq.org/intro:get-the-software)
-library and [pyzmq](http://zeromq.org/bindings:python) installed on your
-machine. These can be installed using
-
-```
-$ pip install pyzmq
-```
-You will also need  [Numpy](http://www.numpy.org/), which can be installed
-using:
-
-```
-$ pip install numpy
+$ pip install pymatbridge
 ```
 
 If you intend to use the Matlab magic extension, you'll also need
 [IPython](http://ipython.org/install.html).
 
-Note thatIPython notebooks also depend on `pyzmq` so if you have IPython notebooks
-installed, you likely have `pyzmq` already.
-
 Finally, if you want to handle sparse arrays, you will need to install
 [Scipy](http://scipy.org/). This can also be installed from PyPI, or using
 distributions such as [Anaconda](https://store.continuum.io/cshop/anaconda/) or
@@ -162,6 +144,7 @@ Python and Matlab using the [0MQ](http://zeromq.org/) messaging library. This sh
 without any need for compilation on most computers. However, in some cases, you might want
 to build the pymatbridge messenger from source. To do so, you will need to follow the instructions below:
 
+
 ### Install zmq library
 Please refer to the [official guide](http://zeromq.org/intro:get-the-software) on how to
 build and install zmq. On Ubuntu, it is as simple as `sudo apt-get install libzmq3-dev`.

pymatbridge/__init__.py

@@ -1,12 +1,23 @@
-from .pymatbridge import *
-from .version import __version__
-
+# We first need to detect if we're being called as part of the setup.py
+# procedure itself in a reliable manner.
 try:
-    from .publish import *
-except ImportError:
-    pass
+    __PYMATBRIDGE_SETUP__
+except NameError:
+    __PYMATBRIDGE_SETUP__ = False
 
-try:
-    from .matlab_magic import *
-except ImportError:
+
+if __PYMATBRIDGE_SETUP__:
     pass
+else:
+    from .pymatbridge import *
+    from .version import __version__
+
+    try:
+        from .publish import *
+    except ImportError:
+        pass
+
+    try:
+        from .matlab_magic import *
+    except ImportError:
+        pass

pymatbridge/version.py

@@ -89,6 +89,9 @@
                                            "mexa64/*"]}
 
 REQUIRES = ['pyzmq']
-#EXTRAS_REQUIRE = ['numpy', 'scipy', 'ipython']
+EXTRAS_REQUIRE = {
+    'sparse arrays':  ["scipy>=0.13.0"],
+    'ipython': ["ipython>=3.0"],
+}
 
 BIN=['scripts/publish-notebook']

setup.py

@@ -12,13 +12,20 @@
 if os.path.exists('MANIFEST'):
     os.remove('MANIFEST')
 
+# we need some code from inside the package to build it. use the same hack as
+# numpy to selectively import even if we don't have dependencies installed
+if sys.version_info[0] >= 3:
+    import builtins
+else:
+    import __builtin__ as builtins
+builtins.__PYMATBRIDGE_SETUP__ = True
 # Find the messenger binary file(s) and copy it to /matlab folder.
 from pymatbridge.messenger.make import get_messenger_dir
 messenger_dir = get_messenger_dir()
 
 for f in glob.glob("./pymatbridge/messenger/%s/messenger.*" % messenger_dir):
     shutil.copy(f, "./pymatbridge/matlab")
-    
+
 try:
     from setuptools import setup
 except ImportError:
@@ -44,7 +51,7 @@
             packages=PACKAGES,
             package_data=PACKAGE_DATA,
             requires=REQUIRES,
-            #extras_require=EXTRAS_REQUIRE,
+            extras_require=EXTRAS_REQUIRE,
             scripts=BIN
             )