FLUIDSIM EXAMPLES INSTALL

I hope someone here could give me some good advice. I know that it was a problem few months ago to add it in requires, but maybe itвЂ™s no longer a problem? Note also that mpi4py does not upload wheels on PyPI (as far as I understand it is for good reasons because mpi4py needs to be recompiled for different MPI implementations). I tried to read PEP 517/518 but I donвЂ™t understand how they apply to our needs.

FLUIDSIM EXAMPLES INSTALL

It seems to me that currently the brackets in pip install commands are not at all usable for this usage. Pip install fluidsim # wheel without extension and with no MPI support For example, in conda the fftw package ( ) is build as fftw-3.3.8-mpi_openmpi, fftw-3.3.8-mpi_mpich, fftw-3.3.8-nompi, etc.Д¬ould it be possible to support things like pip install fluidsim # build with pythran as build dependency (or get the wheel if available)

Unfortunately, all examples I see with pyproject.toml are very simple and I donвЂ™t see any mechanisms to specify options to build the same package in different ways (potentially with different build dependencies) so that it produce different wheels. However, I feel that soon having a pyproject.toml will be kind of mandatory to stay mainstream and get good behavior with many Python tools. Note that it is similar to how conda works (the package installed by a command depends on what was installed in the environment). Of course, it forbids the use of isolated build and therefore pyproject.toml. The solution we choose was to build differently depending of the result of import mpi4py and import pythran with try/except statements. I donвЂ™t enter in the details of why we need this because itвЂ™s going to be long to explain (I can do it if it is useful).

My motivation is in particular about the fluidfft and fluidsim packages and we need to be able to build with and without Pythran and with and without MPI and mpi4py. For some packages, we really need to have different builds (producing different wheels), with different build dependencies.

Fluidsim examples