gistfile1.txt

MacBook-Air-de-Xavier:tmp xordoquy$ mkvirtualenv
mkvirtualenv       mkvirtualenv_help  
MacBook-Air-de-Xavier:tmp xordoquy$ mkvirtualenv test
New python executable in test/bin/python
Installing setuptools.............done.
Installing pip...............done.
(test)MacBook-Air-de-Xavier:tmp xordoquy$ pip install -r req.txt 
Downloading/unpacking numpy (from -r req.txt (line 1))
  Downloading numpy-1.7.1.zip (3.1Mb): 3.1Mb downloaded
  Storing download in cache at /Users/xordoquy/.pip/cache/http%3A%2F%2Fpypi.python.org%2Fpackages%2Fsource%2Fn%2Fnumpy%2Fnumpy-1.7.1.zip
  Running setup.py egg_info for package numpy
    Running from numpy source directory.

[NDLR zap a lot of things here]

building data_files sources
    build_src: building npy-pkg config files
    
Downloading/unpacking matplotlib (from -r req.txt (line 2))
  Downloading matplotlib-1.2.1.tar.gz (38.4Mb): 38.4Mb downloaded
  Storing download in cache at /Users/xordoquy/.pip/cache/https%3A%2F%2Fdownloads.sourceforge.net%2Fproject%2Fmatplotlib%2Fmatplotlib%2Fmatplotlib-1.2.1%2Fmatplotlib-1.2.1.tar.gz
  Running setup.py egg_info for package matplotlib
    basedirlist is: ['/usr/local/', '/usr', '/usr/X11', '/opt/local']
    ============================================================================
    BUILDING MATPLOTLIB
                matplotlib: 1.2.1
                    python: 2.7.2 (default, Oct 11 2012, 20:14:37)  [GCC 4.2.1
                            Compatible Apple Clang 4.0
                            (tags/Apple/clang-418.0.60)]
                  platform: darwin
    
    REQUIRED DEPENDENCIES
                     numpy: no
                            * You must install numpy 1.4 or later to build
                            * matplotlib.
    Complete output from command python setup.py egg_info:
    basedirlist is: ['/usr/local/', '/usr', '/usr/X11', '/opt/local']

============================================================================

BUILDING MATPLOTLIB

            matplotlib: 1.2.1

                python: 2.7.2 (default, Oct 11 2012, 20:14:37)  [GCC 4.2.1

                        Compatible Apple Clang 4.0

                        (tags/Apple/clang-418.0.60)]

              platform: darwin



REQUIRED DEPENDENCIES

                 numpy: no

                        * You must install numpy 1.4 or later to build

                        * matplotlib.

----------------------------------------
Command python setup.py egg_info failed with error code 1 in /Users/xordoquy/.virtualenvs/test/build/matplotlib
Storing complete log in /Users/xordoquy/.pip/pip.log
(test)MacBook-Air-de-Xavier:tmp xordoquy$ more req.txt 
numpy
matplotlib
(test)MacBook-Air-de-Xavier:tmp xordoquy$