Create conda packages

[floriangc]

Hello,

Is it planned to have a conda package for dolfinx ? Or is it to early and dolfinx is not stable enough ?

Thanks !

[garth-wells]

We're planning to tag an alpha release in the coming days. A conda package would be welcome but we don't have the expertise to create and maintain a package. We'd need volunteers with experience.

[floriangc]

I have a small experience on building conda package and releasing it on conda-forge. I could give it a try, starting from what has been done for the conda-forge recipe of fenics.

[astrojuanlu]

I made the original fenics-recipes 6 years ago before conda-forge existed, it's been quite some time but would be happy to lend a hand as well :)

[floriangc]

I didnt had much time lately to work on this but there is a repo where I started working: https://github.com/floriangc/dolfinx-recipe

I managed to go through all the different dependencies of dolfinx (ufl, basix, ffcx). But it was 2 month ago and apparently numba was added to basix deps and the tests dont pass anymore.

[mscroggs]

The numba requirement for Basix should be optional (it's only used if you want to import basix.numba_helpers which are helper functions for writing custom DOLFINx kernels). I've made these tests skip if numba isn't installed in https://github.com/FEniCS/basix/pull/273

[garth-wells]

Conda package have been created by @minrk, see

• https://github.com/conda-forge/fenics-ffcx-feedstock
• https://github.com/conda-forge/fenics-basix-feedstock
• https://github.com/conda-forge/fenics-dolfinx-feedstock

[minrk]

Completed ARM builds for mac and linux over the weekend: conda install -c conda-forge mpich fenics-dolfinx, if anyone would like to test them out / give feedback on dependencies, etc.

[kdanas]

Hi. I am very inexperienced to FEniCS. I was using it for 2 years to teach. I have tried to install FEnics in my new Mac M1 Pro and while I install (using an environment) a number of packages (gmsh, pygmsh, jupyter, matplotlib etc...) when I use the prefix:

channels:

• conda-forge
• defaults

dependencies:

• fenics-dolfinx

It does not work. It gives the error" Collecting package metadata (repodata.json): failed"

Si vous avez une idée.

[RemDelaporteMathurin]

Bonjour,

May be related to a conda bug.

See https://github.com/conda-forge/fenics-feedstock/issues/162#issuecomment-1181296532

A workaround would be to first install mamba, then install fenics (or dolfinx)

[kdanas]

Ok thanks. I have to reinstall everything. There are many conflicts. It would be great if this problem is fixed.

[RemDelaporteMathurin]

It would be great if this problem is fixed.

It's being worked on https://github.com/conda/conda/pull/11612

[kdanas]

Great. It is a matter of time then. I will try again later this week.

[jhale]

Having tried the conda builds on M1 in the past I can confirm that they work very well indeed, so I'd strongly recommend them once the issue in conda is fixed.

It is also 'relatively easy' to build FEniCSx on Mac taking all dependencies (MPI, PETSc, HDF5, Python etc.) from Homebrew.

[minrk]

The petsc metadata error has been fixed.

[kdanas]

Many thanks! The conda is now working for me. I will keep you posted if I find other issues.