pip install --ignore-installed six
Would do the trick.
Source: github.com/pypa/pip/issues/3165
I also think it's absolutely not necessary to start hacking OS X.
I was able to solve it doing a
brew install python
It seems that using the python / pip that comes with new El Capitan has some issues.
As the other answers said, it's because of the new System Integrity Protection, but I believe the other answers are overcomplicated.
If you're only gonna use that package in the current user, you should be able to install it just fine, without the need to disable the SIP, by using the --user
flag. Like this:
sudo pip install --user packagename
The high voted answers didn't work for me, it seems to work for El Capitan users. But for MacOS Sierra users try the following steps
brew install python
sudo pip install --user <package name>
Warnings
I would suggest very strongly against modifying the system Python on Mac; there are numerous issues that can occur.
Your particular error shows that the installer has issues resolving the dependencies for Scrapy without impacting the current Python installation. The system uses Python for a number of essential tasks, so it's important to keep the system installation stable and as originally installed by Apple.
I would also exhaust all other possibilities before bypassing built in security.
Package Manager Solutions:
Please look into a Python virtualization tool such as virtualenv first; this will allow you to experiment safely.
Another useful tool to use languages and software without conflicting with your Mac OS is Homebrew. Like MacPorts or Fink, Homebrew is a package manager for Mac, and is useful for safely trying lots of other languages and tools.
"Roll your own" Software Installs:
If you don't like the package manager approach, you could use the /usr/local
path or create an /opt/local
directory for installing an alternate Python installation and fix up your paths in your .bashrc
. Note that you'll have to enable root for these solutions.
How to do it anyway:
If you absolutely must disable the security check (and I sincerely hope it's for something other than messing with the system languages and resources), you can disable it temporarily and re-enable it using some of the techniques in this post on how to Disable System Integrity-Protection.
This did the trick for me:
sudo pip install scrapy --ignore-installed six
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