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I'm new to Python, and am trying to install Qt/PyQt for PyQGIS. I downloaded the PyQt and SIP packages, and tried to install them but have run into errors.

Installing SIP: As far as I can tell, installation involves 3 command lines: 1. python configure.py 2. make 3. make install I managed the first two steps, but cannot figure why the third failed. I get the following error message:

Jocelynes-MacBook-Pro:sip-4.17 Jocelyne$ sudo make install

Password:

cp -f sip /System/Library/Frameworks/Python.framework/Versions/2.7/bin/sip cp: /System/Library/Frameworks/Python.framework/Versions/2.7/bin/sip: Operation not permitted make[1]: ** * [install] Error 1 make: *** [install] Error 2

I have no idea what Error 1 or Error 2 are, nor how to fix this problem.

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If you work on Mac OS X, you don't need to install PyQt or sip, they are integrated in the QGIS version of Kyng Chaos

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QGIS use the Apple Python therefore you can use PyQt and sip outside QGIS with a simple sy.path.append

If you use the Homebrew version of QGIS, all is installed in /usr/local/Cellar with symbolic links in /usr/local/

Now, if you want to install PyQt yourself, it is not a GIS question but I assume that you use El Capitan and you know the problem of the System Integrity Protection (SIP) (explication of your errors, /System, /bin, /sbin, /usr are protected) and How to Disable System Integrity Protection (rootless) in OS X El Capitan

  • Thanks @gene! I can't remember how I originally downloaded QGIS, but they've released a new version that I just installed from Kyng Chaos which works well. Saves all the faffing around trying to install following these directions (noktec.be/python/how-to-install-pyqt4-on-osx), and I wasn't aware of the SIP issue previously. – Jocelyne Sze Mar 21 '16 at 13:22

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