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Kodiologist
Asked: 2018-03-24 12:53:19 +0800 CST

pip can't resolve a dependency with an Ubuntu package

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I want to upgrade the package psychopy for Python 2:

$ sudo -H pip2 install --upgrade psychopy
Collecting psychopy
Collecting pillow (from psychopy)
  Using cached Pillow-5.0.0-cp27-cp27mu-manylinux1_x86_64.whl
Collecting pyqt5 (from psychopy)
  Could not find a version that satisfies the requirement pyqt5 (from psychopy) (from versions: )
No matching distribution found for pyqt5 (from psychopy)

I guess pyqt5 doesn't support installation from PyPI for Python 2 on Linux. I have the Ubuntu packages pyqt5-dev and python-pyqt5 installed, but pip doesn't seem to care.

I'm running Artful.

package-management python pip pyqt5

1 Answers

  1. I think that the easiest way is to get all build-dependencies with:

    sudo apt-get build-dep psychopy
sudo apt-get install psychopy

sudo apt-get install libgtk2.0-dev libgtk-3-dev mesa-common-dev \
libglu1-mesa-dev libqt5gstreamer-dev libwebkitgtk-dev libwebkitgtk-3.0-dev \
libgstreamer-plugins-bad1.0-dev \
libgstreamer-plugins-base1.0-dev libgstreamer-plugins-good1.0-dev

    And then install it with pip:

    sudo -H pip2 install --upgrade psychopy
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