[Dune] building dune-python

[Dedner, Andreas]

Hi.
Cache entry deserialization failed, entry ignored

I have  not seen this error before but a bit of internet research indicates that this is caused by a corrupted cache from pip and therefore has nothing to do with dune-python. What happens if you try to install something else into the virtualenv, i.e.,
pip install ufl
or something like that - does that also give the cache error?
Some suggestions I found e.g.
https://stackoverflow.com/questions/49671215/cache-entry-deserialization-failed-entry-ignored
is to delete ~/.cache/pip but I have no idea if this can cause other issues....
In case it has something to do with dune-python, it would be helpful to get the output of running
pip install --upgrade .
in the python folder in the build directory of dune-python.

Hope this helps
Andreas
________________________________
From: Dune <dune-bounces at lists.dune-project.org> on behalf of Ziad Boutanios <ziad.boutanios at gmail.com>
Sent: 07 March 2020 19:07
To: dune at lists.dune-project.org <dune at lists.dune-project.org>
Subject: [Dune] building dune-python


Hi,

OS:

debian stable

Dune modules built:

dune-fem dune-geometry dune-localfunctions dune-spgrid dune-alugrid dune-fempy      dune-grid dune-pdelab dune-typetree dune-common dune-functions dune-istl dune-python    dune-uggrid

Options: (in config.opts)

BUILDDIR=build-cmake
USE_CMAKE=yes
MAKE_FLAGS=-j4
CXXFLAGS="-O3 -DNDEBUG -funroll-loops -finline-functions -Wall -ftree-vectorize -fno-stack-protector -mtune=native"
CMAKE_FLAGS="-DCMAKE_CXX_FLAGS='$CXXFLAGS' \
             -DCMAKE_POSITION_INDEPENDENT_CODE=TRUE \
             -DALLOW_CXXFLAGS_OVERWRITE=ON \
             -DENABLE_HEADERCHECK=OFF \
             -DUSE_PTHREADS=ON \
             -DCMAKE_DISABLE_FIND_PACKAGE_LATEX=TRUE \
             -DCMAKE_DISABLE_DOCUMENTATION=TRUE \
             -DADDITIONAL_PIP_PARAMS="-upgrade" \
             -DDUNE_GRID_EXPERIMENTAL_GRID_EXTENSIONS=TRUE \
             -DPYTHON_INSTALL_LOCATION="system"
            "

I'm also working within a python3 virtual environment. The build completed without errors following this command:

    ./dune-common/bin/dunecontrol --opts=config.opts all

but when trying to complete the dune-python installation with:

    ./dune-python/bin/setup-dunepy.py --opts=config.opts install

I get the following errors:

    Failed building wheel for dune.python
    Cache entry deserialization failed, entry ignored
    Cache entry deserialization failed, entry ignored
    Cache entry deserialization failed, entry ignored
    Failed building wheel for dune.fem
    Failed building wheel for UFL
    Failed building wheel for dune.spgrid
    Failed building wheel for dune.alugrid

Running python test.py in dune-python/demo returns the following:

  configuration did not work:  CMake Error at CMakeLists.txt:8 (find_package):
  By not providing "Finddune-common.cmake" in CMAKE_MODULE_PATH this project
  has asked CMake to find a package configuration file provided by
  "dune-common", but CMake did not find one.

  Could not find a package configuration file provided by "dune-common" with
  any of the following names:

    dune-commonConfig.cmake
    dune-common-config.cmake

  Add the installation prefix of "dune-common" to CMAKE_PREFIX_PATH or set
  "dune-common_DIR" to a directory containing one of the above files.  If
  "dune-common" provides a separate development package or SDK, be sure it
  has been installed.

Tried setting CMAKE_PREFIX_PATH to the installation prefix of dune-common and configuring again but still the same errors.

I'm surprised the configuration script is not finding the dune-common location automatically. Also, the two files dune-commonConfig.cmake and dune-common-config.cmake are nowhere to be found in the modules folders. Is there more to it than the official instructions on the website? Strangely enough some of the dependency checks of setup-dunepy.py ask for module versions >=2.8

Thanks in advance,

Ziad
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