can't install pyqt

[Becker__Neal]

I don't see how to install pyqt into intelpython environment:

conda install pyqt --channel=intel
Using Anaconda Cloud api site https://api.anaconda.org
Fetching package metadata: ..........
Solving package specifications: ....

The following specifications were found to be in conflict:
  - bzip2 (target=bzip2-1.0.6-intel_py3.5_1.tar.bz2)
  - db (target=db-4.7.25-intel_py3.5_1.tar.bz2)
  - icc_rt (target=icc_rt-15.0.6-intel_py3.5_1.tar.bz2)
  - libffi (target=libffi-3.2.1-intel_py3.5_1.tar.bz2)
  - openssl (target=openssl-1.0.2g-intel_py3.5_1.tar.bz2)
  - pip (target=pip-7.1.2-intel_py3.5_1.tar.bz2) -> python 3.5*
  - pip (target=pip-7.1.2-intel_py3.5_1.tar.bz2) -> setuptools
  - pyqt -> python 3.5*
  - python 3.5*
  - setuptools (target=setuptools-18.2-intel_py3.5_1.tar.bz2) -> python 3.5*
  - sqlite (target=sqlite-3.8.11.1-intel_py3.5_1.tar.bz2)
  - tcl (target=tcl-8.6.4-intel_py3.5_1.tar.bz2)
  - tix (target=tix-8.4.3-intel_py3.5_1.tar.bz2)
  - tk (target=tk-8.6.4-intel_py3.5_1.tar.bz2)
  - xz (target=xz-5.2.1-intel_py3.5_1.tar.bz2)
  - zlib (target=zlib-1.2.8-intel_py3.5_1.tar.bz2)
Use "conda info <package>" to see the dependencies for each package.
(intelpython3)[nbecker@nbecker2 envs]$ conda install pyqt --channel=intel --override-channel
Using Anaconda Cloud api site https://api.anaconda.org
Fetching package metadata: ..
Solving package specifications: .
Error:  Package missing in current linux-64 channels: 
  - pyqt

Did you mean one of these?

    pytz

You can search for this package on anaconda.org with

    anaconda search -t conda pyqt

[Robert_C_Intel]

A workaround is to:

conda remove freetype2

You will switch some packages from intel to continuum, including matplotlib, but you will still have intel numpy/scipy

We are working with continuum to resolve depedences that make it difficult to mix packages.

[Becker__Neal]

OK, I did

conda remove freetype2

Then:

conda install pyqt 
Using Anaconda Cloud api site https://api.anaconda.org
Fetching package metadata: ........
Solving package specifications: ....

The following specifications were found to be in conflict:
  - bzip2 (target=bzip2-1.0.6-intel_py3.5_1.tar.bz2)
  - db (target=db-4.7.25-intel_py3.5_1.tar.bz2)
  - icc_rt (target=icc_rt-15.0.6-intel_py3.5_1.tar.bz2)
  - libffi (target=libffi-3.2.1-intel_py3.5_1.tar.bz2)
  - openssl (target=openssl-1.0.2g-intel_py3.5_1.tar.bz2)
  - pip (target=pip-7.1.2-intel_py3.5_1.tar.bz2) -> python 3.5*
  - pyqt -> python 3.5*
  - python 3.5*
  - setuptools (target=setuptools-18.2-intel_py3.5_1.tar.bz2) -> python 3.5*
  - sqlite (target=sqlite-3.8.11.1-intel_py3.5_1.tar.bz2)
  - tcl (target=tcl-8.6.4-intel_py3.5_1.tar.bz2)
  - tix (target=tix-8.4.3-intel_py3.5_1.tar.bz2)
  - tk (target=tk-8.6.4-intel_py3.5_1.tar.bz2)
  - xz (target=xz-5.2.1-intel_py3.5_1.tar.bz2)
  - zlib (target=zlib-1.2.8-intel_py3.5_1.tar.bz2)

[Robert_C_Intel]

The problem is a version conflict between the packages we provide and the requirements of pyqt from anaconda. If you start from miniconda and create an intel python environment:

 conda create -n idp3m intelpython3_core

Then I am able to install pyqt with no conflict. If I start with Intel python installer, then there is a conflict on the versions of libpng, but uninstalling freetype2 removes the conflict and installs pyqt. I think you have a different combination of packages and the conflict is different. If you can tell me how to create an conda environment that shows the problem, then I can reproduce and track it down.

We have asked Continuum to update their package to also accept libpng 1.6.18, instead of only 1.6.17, which would fix the problem that I see. We are also looking at more general solutions to avoid version conflicts in the future.

[Becker__Neal]

The original problem was that when I tried to plot with matplotlib, I got no screen output (and now error message).

I did notice that

%matplotlib

said setting output to Agg.

Usually, I would see

In [32]: %matplotlib
Using matplotlib backend: Qt5Agg

So I thought maybe the problem was caused by pyqt not being installed.

Otherwise, my original problem is still that matplotlib doesn't seem to produce any screen output.

[Robert_C_Intel]

If you download intel python from intel and activate the root environment, it works. If you create a conda environment, with intelpython3_core and matplotlib then plotting does not work--it silently exits for me.

I think there is a missing dependence that is only uncovered when you install packages individually. I need to investigate some more.