How can I update FENICS from 0.7 to 0.9? Do I need to create another virtual environment?

General
1

I am a beginner of FENICS and would like to update myself on FENICS.

2

You would need to explain how you installed FEniCSx in the first place.
As there are many ways of doing it, the solution will depend on this.

3

Thank you for your response
I created the environment on both Windows and Linux systems, using wsl+ubuntu+naconda+vscode+paraview, following the installation instructions on the official website.

4

Create a new conda environment, and install fenics-dolfinx in it: https://anaconda.org/conda-forge/fenics-dolfinx

5

Thank you very much for your answer. The environment problem has troubled me for a long time. If I install GMSH, PANDAS or PYBISTA and other packages, should I use pip install or conda install?

6

In general, I’d recommend installing what you can with conda first and then use pip for any other packages after. For example, you could do something like

conda create -n fenicsx-env
conda activate fenicsx-env
conda install -c conda-forge fenics-dolfinx mpich pyvista matplotlib
conda install -c anaconda scipy
pip install gmsh

without any problems.

7

Please note that gmsh is also on conda, and is always recommended to use conda-packages, if they are available, to avoid binary mismatch. Of course, if a library is not on conda, then using pip install is the only option