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[python] Restructure module metadata file logic and use to solve 'mpi4py' issue

Closes #271

See merge request core/dune-common!1054

This has just been recently introduced a couple of commits earlier on master. So we don't need to support it.

Andreas Dedner authored Nov 22, 2021 and Timo Koch committed Nov 24, 2021

dune.common.module should be slowely removed. It contains the original methods used to setup
`dune-py` and is not needed anymore after the recent changes. This commit removes its usage from
the cmakebuilder. Some methods are moved from dune.common.modules to dune.generator.cmakebuilder since
dune-py is now generated here.

Andreas Dedner authored Nov 14, 2021 and Timo Koch committed Nov 24, 2021

* use this in __main__ as well

When registring metadata for external modules check if the path has moved compared to the last time dune-py was configured

Andreas Dedner authored Nov 14, 2021 and Timo Koch committed Nov 24, 2021

Add mpi4py in non install scenario in cmake install package function but only in source installation

Andreas Dedner authored Nov 13, 2021 and Timo Koch committed Nov 24, 2021

The advantage is that we don't need to load all dune subpackages anymore to extract the metadata and can so avoid the issues with circular dependencies.
Instead is it enough to import the new submodule dune.data.
The CMAKE_METADATA_FILE parameter to dune_python_install_package is not needed anymore and is ignroed.

Improve inkscape_generate_png_from_svg

See merge request core/dune-common!1058

[cmake][cleanup] format message as status message

See merge request core/dune-common!1060

[bugfix][Python] Revert cleanup in locking.py.

See merge request core/dune-common!1063

for portalocker is still needed.

Cleanup/python

See merge request core/dune-common!1050

[cmake][cleanup] Reduce output for cmake tests from module deps

See merge request core/dune-common!1061

[python][cmake] Do not write requirements.txt file

See merge request core/dune-common!1062

[cmake][mpi] Use correct guard MPI

See merge request core/dune-common!804

The dune CMake configuration actually need `MPI_C_FOUND` to be true. If this is true `HAVE_MPI` is set. This is used with this commit.

According to the CMake 3.1 doc `MPI_FOUND` is actually discouraged. It is later reintroduced but is only true if MPI has been found for all requested languages. Which is also not what we want. 

[cmake][cleanup] Remove search status message erroneously printed for all dependencies (also those not found)

[Python] avoid logging both 'generating' and 'compiling' module in two lines

See merge request core/dune-common!1057

Move dunecommon target to the root CMakeLists file

See merge request core/dune-common!1048

[python] Add preprocessor option to disable Python deprecation warning

See merge request core/dune-common!1043

Feature/python reduce printing compiling

See merge request core/dune-common!1052

Reorganize imports to avoid circular dependency