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installing pyside using PIP - nmake not found

I want to install PySide using PIP package manager. But it get this error message saying it didn't find nmake. This is no surprise because I do not have MSVC installed nor do I intend to.
Installing collected packages: pyside
Running setup.py install for pyside
Removing c:\users\cnyffele\appdata\local\temp\pip_build_cnyffele\pyside\pyside_package
Python architecture is 32bit
nmake not found. Trying to initialize the MSVC env...
Searching MSVC compiler version 9.0
error: Failed to find the MSVC compiler version 9.0 on your system.
However the setup.py program could simply run make:
C:\Users\cnyffele>where make
C:\MinGW32-xy\bin\make.exe
C:\Users\cnyffele>where mingw32-make
C:\MinGW32-xy\bin\mingw32-make.exe
But for some reason, it insists that if the platform is "win32" it should use msvc without trying anything else. It does, however, accept command-line options: I could specify "make-spec" to be "mingw" (see below).
From https://github.com/PySide/pyside-setup/blob/master/setup.py
OPTION_MAKESPEC = option_value("make-spec")
...
if sys.platform == "win32":
if OPTION_MAKESPEC is None:
OPTION_MAKESPEC = "msvc"
if not OPTION_MAKESPEC in ["msvc", "mingw"]:
print("Invalid option --make-spec. Available values are %s" % (["msvc", "mingw"]))
sys.exit(1)
How can I make setyp.py use the correct make when installing with PIP? Is there a way to have PIP provide command-line options to setup.py when it runs it? If this is not possible, how can I run setup.py manually after PIP downloaded it?

PIP allows passing options to setup via the options '--global-option' and '--install-option' as described in the pip reference guide.
The solution is:
pip install --global-option="--make-spec=mingw" PySide
Some additional information:
That prior to installing PySide using pip, you have to install cmake and Qt 4.8.
Build errors prevented me from downloading and installing PySide directly via pip. I needed to download the wheel binary packages from pypi.python.org.
Using a pre-downloaded .whl package, assuming the package is located in the current working directory:
pip install --global-option="--make-spec=mingw" PySide-1.2.4-cp27-none-win32.whl

pyzmq installation error with dependency on gcc

I tried installing pyzmq by http://ipython.org/ipython-doc/dev/install/install.html as I want to install ipython. But it has dependency on pyzmq which has dependency on gcc. I already have gcc installed but still I am getting the following error while install pyzmq.
compilation terminated.
error: Setup script exited with error: command 'gcc' failed with exit status 1
The script also has following in it:
If you expected pyzmq to link against an installed libzmq, please check to make sure:
* You have a C compiler installed
* A development version of Python is installed (including headers)
* A development version of ZMQ >= 2.1.4 is installed (including headers)
* If ZMQ is not in a default location, supply the argument --zmq=<path>
* If you did recently install ZMQ to a default location,
try rebuilding the ld cache with `sudo ldconfig`
or specify zmq's location with `--zmq=/usr/local`
You can skip all this detection/waiting nonsense if you know
you want pyzmq to bundle libzmq as an extension by passing:
`--zmq=bundled`
I will now try to build libzmq as a Python extension
I already have all the above but still issues. I am guessing I have path issues i.e. may be pyzmq is looking at other location but how do I solve this problem

This is a huge issue in Windows to install ipython. I would recommend Windows users to never go the pip or easy_install way to install it. I faced a lot of issues like above. I read that it still has dependencies issues on github i.e. via pip.
I got it installed finally by this:
Download and install Anaconda
Update IPython to the current version by:
Go to Anaconda directory or look for anaconda cmd & do the following:
conda update conda
conda update ipython

Cannot easy_install readline for Python 2.7.3 on Mac Os Lion

I am trying to install the python readline module. I have already installed readline via homebrew.
If I type
easy_install readline
I get
Downloading http://pypi.python.org/packages/source/r/readline/readline-6.2.2.tar.gz#md5=ad9d4a5a3af37d31daf36ea917b08c77
Processing readline-6.2.2.tar.gz
Writing /var/folders/44/dhrdb5sx53s243j4w03063vh0000gn/T/easy_install-64FbG8/readline-6.2.2/setup.cfg
Running readline-6.2.2/setup.py -q bdist_egg --dist-dir /var/folders/44/dhrdb5sx53s243j4w03063vh0000gn/T/easy_install-64FbG8/readline-6.2.2/egg-dist-tmp-NOmStB
clang: error: no such file or directory: 'readline/libreadline.a'
clang: error: no such file or directory: 'readline/libhistory.a'
error: Setup script exited with error: command '/usr/bin/clang' failed with exit status 1
Any ideas about how I could fix this ?
Thanks

There is a new solution to this problem in Pypi, pip install gnureadline.
https://pypi.python.org/pypi/gnureadline
The root issue is libedit (BSD-licensed) vs. Gnu Readline (GPL-licensed) . Apple would rather provide incompatible BSD code, than provide compatible code that has GPL restrictions.

This bug should be fixed in readline version 6.2.4 released last week.
Also note that you do not need to install the readline library itself via homebrew. It is already included within the python readline module.
Anyone having problems with the python-readline module is welcome to open an issue on the GitHub page of the module. This will ensure that the problem is permanently solved for everyone.

I had this same problem in OS X Lion 10.8, and fixed it by renaming my /Developer to /Developer-old. See this issue.

None of the above worked from me.
After uninstall ipython and readline, I ran the following that finally worked
easy_install http://pypi.python.org/packages/source/r/readline/readline-6.1.0.tar.gz
pip install ipython
And yes, readline 6.1.0 is an old one, but 6.2.x or other would not work (in sept 2013).

Try installing the binary egg directly:
$ easy_install http://pypi.python.org/packages/2.7/r/readline/readline-6.2.2-py2.7-macosx-10.7-intel.egg#md5=25383d860632d4a1521961ba68a52fe2

Make sure you have gcc installed.
which gcc
should return
/usr/bin/gcc
I was getting the same error when trying to easy_install readline. It wasn't until I downloaded the tar and tried to manually build it that I noticed it said
checking whether make sets $(MAKE)... no
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/Users/roneill/readline-6.2.4.1/rl/readline-lib':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details.
that I realized what the actual problem was. I had not used this particular laptop in a while and had not used Xcode to install the command line tools. Once I did, things worked properly.

Why am I getting the error: command 'llvm-gcc-4.2' failed with exit status 1

I am setting up os X 10.7.
I am using the default install of Python:
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/
I use a Python based package manager called easy_install.
Easy_install seems to not be able to find the compiler.
EDIT: When I tried to install MySQL-python I got this error:
$ sudo easy_install MySQL-python
Password:
Searching for MySQL-python
Reading http://pypi.python.org/simple/MySQL-python/
Reading http://sourceforge.net/projects/mysql-python/
Reading http://sourceforge.net/projects/mysql-python
Best match: MySQL-python 1.2.3
Downloading http://download.sourceforge.net/sourceforge/mysql-python/MySQL-python-1.2.3.tar.gz
Processing MySQL-python-1.2.3.tar.gz
Running MySQL-python-1.2.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-P9H9WX/MySQL-python-1.2.3/egg-dist-tmp-rRTfZL
warning: no files found matching 'MANIFEST'
warning: no files found matching 'ChangeLog'
warning: no files found matching 'GPL'
unable to execute llvm-gcc-4.2: No such file or directory
error: Setup script exited with error: command 'llvm-gcc-4.2' failed with exit status 1
error: Setup script exited with error: command 'llvm-gcc-4.2' failed with exit status 1
Xcode 4.1 used GCC, but with Xcode 4.2 that seems to have changed.
What compiler does Apple want us to use?
How do I setup the configuration so I can compile OSS?

I had the exact same problem when I upgraded from OSX 10.6 to 10.7. If you upgrade to 10.7 from 10.6, your version of Python may go from 2.6 to 2.7 and a result you may need to re-install most of your python packages.
Here's what worked for me:
Install the latest version of XCode from the App Store
Inside XCode, go to Preferences -> Downloads -> Components
download the Command Line Tools
That's all you need to do. Try to install again in a new shell. The command line tool installation will put llvm-gcc-4.2 into /usr/bin which should be in your default path. The installation also takes care of library paths and stuff that you don't really want to know about unless something breaks.
10.9 edit
If you're running 10.9 or higher, I think you might be able to run this from the command line instead to install the command line tools:
xcode-select --install
I haven't verified that this is an actual fix to the problem.

Alternative to installing Xcode, install GCC and related tools via:
https://github.com/kennethreitz/osx-gcc-installer

Sounds to me you ran into this issue. The thread shows a variety of solutions.
Hope that helps.

The fix is quite simple. Check out the following blogpost.
http://waqasshabbir.tumblr.com/post/19073648382/llvm-gcc-4-2-exe-error-on-mac-osx-lion-when-building

Using OS X 10.7.5 (Lion)
I tried the XCode solution, but my gevent pip installation still wasn't successful. Then, I tried building libevent from source but still no success with gevent installation. However, after I did
brew install libevent
I was able to successfully install gevent with
sudo pip install gevent
(Note: greenlet is also a dependency for gevent, so you may try installing it with pip as well. It was already installed on my machine.)

All of the suggestions here (Xcode command line options, and Kenneth Reitz' stuff) didn't work for me (I am on Mac OS X 10.7.5, Xcode 4.6.3).
What helped in the end was altering the cflags options in the mysql_config file (There were errors about 'unreconized command line options' while trying to 'sudo pip install MySQL-python').
See this post: cc1: error: unrecognized command line option "-Wno-null-conversion" within installing python-mysql on mac 10.7.5

What is the best way to setup Django on os X 10.7 Lion?

I am setting up Python and Django on os X 10.7 from a virgin install and Xcode 4.3.
I tried using the default install of Python:
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/
I normally use a Python based package manager called easy_install.
Easy_install seems to not be able to find the compiler.
EDIT: When I tried to install MySQL-python I got this error:
$ sudo easy_install MySQL-python
Password:
Searching for MySQL-python
Reading http://pypi.python.org/simple/MySQL-python/
Reading http://sourceforge.net/projects/mysql-python/
Reading http://sourceforge.net/projects/mysql-python
Best match: MySQL-python 1.2.3
Downloading http://download.sourceforge.net/sourceforge/mysql-python/MySQL-python-1.2.3.tar.gz
Processing MySQL-python-1.2.3.tar.gz
Running MySQL-python-1.2.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-P9H9WX/MySQL-python-1.2.3/egg-dist-tmp-rRTfZL
warning: no files found matching 'MANIFEST'
warning: no files found matching 'ChangeLog'
warning: no files found matching 'GPL'
unable to execute llvm-gcc-4.2: No such file or directory
error: Setup script exited with error: command 'llvm-gcc-4.2' failed with exit status 1
error: Setup script exited with error: command 'llvm-gcc-4.2' failed with exit status 1
Apparently, the system attempts to use the same compiler used to compile the installed Python framework.
For some reason Apple didn't include llvm-gcc-4.2.
Xcode 4.1 used GCC, but with Xcode 4.3 that seems to have changed.
From what I can gather, Apple wants to use Clang as the compiler vs GCC.
So I added to .bash_profile:
cc=clang
I decided I would just recompile Python with clang but first, I needed to install readline.
Fail:
Wed Feb 22 16:04:59 ~/Downloads/readline-6.2
$ ./configure
checking build system type... i386-apple-darwin11.3.0
checking host system type... i386-apple-darwin11.3.0
Beginning configuration for readline-6.2 for i386-apple-darwin11.3.0
checking whether make sets $(MAKE)... no
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/Users/Bryan/Downloads/readline-6.2':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details.
What the easiest way to install Django on Lion 10.7?

Did you install the command-line tools with Xcode 4.3? They are not installed by default. You can install them by going to the Downloads pane in Xcode 4.3's preferences.

Making it way too hard:
First, make sure you install Xcode (available for free in the Mac App Store). It includes all the build tools that might be necessary to compile certain Python packages.
To get easy_install just download setuptools and follow the instructions for installing on Mac OS X at that link.
Once that's done, you can easy_install virtualenv to get a nice segregated environment to work in.

For the MySQL issue you have to edit the site.cfgfile:
mysql_config = /usr/local/mysql/bin/mysql_config
And then:
$ python setup.py build
$ sudo python setup.py install

Try updating XCode and reinstall all global site-packages. You may also want to try pip instead of easy_install.
You can also try to compile with
export ARCHFLAGS='-arch i386 -arch x86_64'
This solved many of my problems in the past when upgrading OSX versions.