[BUG]: Windows Installation issues

[KQEFEM]

Summarize the issue

Hi All,
I am trying to install FEniCS through VS Code on my Windows 11 machine using the command on git:

I find that it gets stuck here for an hour - so far.

Collecting package metadata (current_repodata.json): done
Solving environment: unsuccessful initial attempt using frozen solve. Retrying with flexible solve.
Solving environment: unsuccessful attempt using repodata from current_repodata.json, retrying with next repodata source.
Collecting package metadata (repodata.json): -

If you have any tips for installing FEniCS, that would be great - I am interested in using it and potentially aiding in development.

How to reproduce the bug

conda install -c conda-forge fenics-dolfinx pyvista pyamg # Windows

Minimal Example (Python)

No response

Output (Python)

No response

Version

main branch

DOLFINx git commit

No response

Installation

VS Code and conda (hoping to avoid WSL and Docker)

Additional information

No response

[jorgensd]

Download mamba, using conda from anaconda can result in extremely long resolution time: https://conda-forge.org/download/

[KQEFEM]

Ok, this worked but I still have issues running your test. The code seems to fail on demo_pyamg with no error here:

mesh = create_box( comm=MPI.COMM_WORLD, points=[(0.0, 0.0, 0.0), (3.0, 2.0, 1.0)], n=[30, 20, 10], cell_type=CellType.tetrahedron, dtype=real_type, )

I have placed print statements either side and it doesn't pass this command. Do you have any tips/solutions?

[jorgensd]

That seems rather strange.

Could you first try with

from mpi4py import MPI
import dolfinx
mesh = dolfinx.mesh.create_unit_interval(MPI.COMM_WORLD, 2)

and

from mpi4py import MPI
import dolfinx
mesh = dolfinx.mesh.create_unit_interval(MPI.COMM_SELF, 2)

separately.

[KQEFEM]

This still doesn't appear to work. I just runs and has no output or errors (I added print statements afterwards which are never hit)

.