Install fenics 2019.1 on terminal ubuntu 22.04

[Chayma_N]

l install fenics on ubuntu 22.04, I get the version 2019.2 but I want 2019.1. How can I change the version ?

[francesco-ballarin]

You could recompile from source, but it is not going to be fun because you would need to be extra sure that you have versions dated 2019 of all dependencies in a system that ships packages from the year 2022+.

For instance, the following patches have been introduced after 2019 to ensure compatibility with newer versions of the dependecies:

• you would need an ancient gcc, because gcc 13 requires Bitbucket which is post 2019.1.0
• you would need a 2019 version of boost, because newer ones requires Bitbucket which is post 2019.1.0

Considering that the dolfin version currently on ubuntu is backward compatible with 2019.1.0 (at least, to the best of my knowledge) I can’t think of a reason why anyone would want to do all of that work to downgrade. Please elaborate on why you need that.

[Chayma_N]

Thanks for your help.
I want to use cashocs is a software for solving PDE constrained optimization problems in the fields of shape optimization and optimal control.
Than l need to have fenics 2019.1.
https://cashocs.readthedocs.io/en/stable/about/installation/#installation-instructions
I install cashocs with fenics 2019.2… I have a problem

[francesco-ballarin]

I install cashocs with fenics 2019.2… I have a problem

It would have been helpful to post which problem.

Regardless, you can use conda, as they do to in

sblauth/cashocs/blob/main/.github/docker/Dockerfile#L13

[Chayma_N]

sblauth/quasi_newton_methods_for_topology_optimization/blob/main/quasi_newton_methods_for_topology_optimization/navier_stokes/rugby_ball/main.py

I run this code on spyder and I get this

[francesco-ballarin]

Your installation seems wrong to me.

From your opening message I guessed you had installed FEniCS from apt. Yet, ufl is getting loaded from $HOME/.local/lib.
If you did install FEniCS from apt, you must not have any other FEniCS libraries in $HOME/.local/lib.

[Chayma_N]

I check and yes I have tow : dolfin: /usr/include/dolfin /usr/share/dolfin
How can I solve this problem ?

[francesco-ballarin]

Something like

cd $HOME/.local/lib/python3.10/site-packages
rm -rI *ufl*

This will remove every component of ufl from $HOME/.local. The capital i in the rm command will ask you for confirmation before removal.

While you are in that folder, you may want to double check that there are no other fenics-* packages.

[Chayma_N]

I do this but it is still say that I have two fenics than I auto-remove fenics and I will install know

[francesco-ballarin]

I check and yes I have tow : dolfin: /usr/include/dolfin /usr/share/dolfin

Those are not two separate installs, they are part of the same installation.

[Chayma_N]

I still have the same problem

[francesco-ballarin]

It can’t be exactly the same, if you have removed the ufl package as instructed.

Messages like

I still have the same problem

aren’t very helpful. It would have been more helpful to copy the error message from the terminal, and paste it here within triple backquotes (```) to have the error nicely formatted as

in this box

Prefer that over posting a screenshot.

[Chayma_N]

ModuleNotFoundError: No module named ‘ufl’

[francesco-ballarin]

How did you actually install FEniCS?

[Chayma_N]

sudo apt-get install software-properties-common
sudo add-apt-repository ppa:fenics-packages/fenics
sudo apt-get update
sudo apt-get install fenics

[francesco-ballarin]

Can you post the output of

apt list --installed | grep fenics
apt list --installed | grep ufl

?

I suspect that the latter is something like

python-ufl-legacy-doc/jammy,now 1:2022.3.0-2~ppa1~jammy1 all [installed,automatic]
python3-ufl-legacy/jammy,now 1:2022.3.0-2~ppa1~jammy1 all [installed,automatic]

If that is the case, then the issue is related to

Announcement: ufl_legacy and legacy dolfin

tl;dr: UFL is no longer compatible with legacy dolfin. A ufl_legacy package will be created to help keep old dolfin projects computing. Depending on how you use ufl, you might need to replace import ufl with import ufl_legacy as ufl. Challenge: UFL continues to be developed alongside dolfinx (and ffcx/basix, and firedrake). The 2023 release of UFL broke compatibility with legacy dolfin (and old ffc). The use-case requiring simultaneous installation of both dolfin and dolfinx might be, for in…

Try the following

cd $HOME/.local/lib.python3.10/site-packages/cashocs
find ./ -type f -exec sed -i 's|import ufl|import ufl_legacy|g' {} \;
find ./ -type f -exec sed -i 's|ufl.Form|ufl_legacy.Form|g' {} \;
find ./ -type f -exec sed -i 's|ufl.core|ufl_legacy.core|g' {} \;
find ./ -type f -exec sed -i 's|ufl.form.Form|ufl_legacy.form.Form|g' {} \;
find ./ -type f -exec sed -i 's|ufl.replace|ufl_legacy.replace|g' {} \;
find ./ -type f -exec sed -i 's|ufl.Measure|ufl_legacy.Measure|g' {} \;
find ./ -type f -exec sed -i 's|ufl.algorithms|ufl_legacy.algorithms|g' {} \;
find ./ -type f -exec sed -i 's|ufl.log|ufl_legacy.log|g' {} \;
find ./ -type f -exec sed -i 's|ufl.Jacobian|ufl_legacy.Jacobian|g' {} \;

where I am trying to replace every instance of ufl in the code with ufl_legacy.

With these changes, I was able to run the demo you are intersted in.

[Chayma_N]

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

fenics/jammy,now 2:0.7.0.2~ppa1~jammy1 amd64 [installé]

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

python-ufl-legacy-doc/jammy,jammy,now 1:2022.3.0-2~ppa1~jammy1 all [installé, automatique]
python3-ufl-legacy/jammy,jammy,now 1:2022.3.0-2~ppa1~jammy1 all [installé, automatique]

[francesco-ballarin]

OK, then you may proceed as in the second part of the above message.

(The code below “Try the following”, I mean)

[francesco-ballarin]

Reported upstream as a feature request at [Feature Request] Consider supporting FEniCS > 2019.1.0 · Issue #358 · sblauth/cashocs · GitHub

[Chayma_N]

Thanks, you’ve solved my problem