install scrapy failed on Mac OS X Yosemite

I run pip install scrapy, and it only gives me the error:

then I realized there is something wrong with cryptography, then I found this would be helpful: Install Cryptography using your own openssl on os x

Accroding to the link above, I run the following command:

$ brew install openssl
$ env ARCHFLAGS="-arch x86_64" LDFLAGS="-L/usr/local/opt/openssl/lib" CFLAGS="-I/usr/local/opt/openssl/include" pip install cryptography
$ pip install scrapy

Then I successfully installed scrapy. I don’t know whether it’s common for OS X users, if so, I think maybe the installation guide could be more specific for OS X.

System: OS X Yosemite 10.10.2 Python : 2.7.9

[curita]

I’m thinking this could be a duplicate of #1342, the trace shows an error in six and the only additional dependency in OS X for cryptography is xcode-select. Not having it gives a pretty descriptive message:

    ...
    xcode-select: note: no developer tools were found at '/Applications/Xcode.app', requesting install. Choose an option in the dialog to download the command line developer tools.
    error: command 'clang' failed with exit status 1

in any of the libraries that compile things.

@linus-young @MojoJolo could you test if the workaround mentioned in that issue (Here: https://github.com/scrapy/scrapy/issues/1342#issuecomment-120312583, basically running export PYTHONPATH="/Library/Python/2.7/site-packages" in your terminal) helps in solving the problem?

[Trangle91]

Thanks. It’s very helpful!