ReviewBoard pip installation failure
Question: I am trying to install ReviewBoard on 14.04.1-Ubuntu and I get the error
below. I have used commands:

    
    
    sudo apt-get install python-setuptools python-dev memcached patch libjpeg-dev
    sudo pip install -U pip
    sudo easy_install pip
    sudo apt-get install python-mysqldb
    sudo pip install ReviewBoard
    
    File "/usr/lib/python2.7/distutils/command/build_ext.py", line 337, in run self.build_extensions()
    File "/tmp/pip-build-84i3OO/Pillow/setup.py", line 512, in build_extensions' using --disable-%s, aborting' % (f, f))
    ValueError: zlib is required unless explicitly disabled using --disable-zlib, aborting
    

* * *
    
    
    Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-84i3OO/Pillow/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-5lU4Yb-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-84i3OO/Pillow/
    /usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages        
    /urllib3/util/ssl_.py:122: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
    InsecurePlatformWarning
    

Are there any ideas why does it happen and how to solve it?

EDIT

Installed pillow (<https://discuss.erpnext.com/t/new-python-dependency-pillow-
if-you-get-error-during-update-see-this-post/7900>):

    
    
    sudo apt-get install -y libtiff5-dev libjpeg8-dev zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev python-tk
    sudo pip install pillow
    

Now getting:

    
    
    x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -                                                                                                                                                             Wall -Wstrict-prototypes -fPIC -DUSE__THREAD -I/usr/include/ffi -I/usr/include/l                                                                                                                                                             ibffi -I/usr/include/python2.7 -c c/_cffi_backend.c -o build/temp.linux-x86_64-2                                                                                                                                                             .7/c/_cffi_backend.o
    c/_cffi_backend.c:15:17: fatal error: ffi.h: No such file or directory
     #include <ffi.h>
                     ^
    compilation terminated.
    error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
    

* * *
    
    
    Command "/usr/bin/python -u -c 
    "import setuptools, tokenize;__file__='/tmp/pip-build-hB90D2/cffi/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-CCyW5e-record/install-record.txt --single-version-externally-managed --compile" 
    failed with error code 1 in /tmp/pip-build-hB90D2/cffi/
    


Answer: Have you tried to install `libffi-devel`

    
    
    apt-get install libffi-dev
    

Sometime to fix pip issues its useful to install `build-essential` and
`python-dev`

    
    
    apt-get install python-dev && apt-get install build-essential
    

Good luck!

