Compatibilty ufl and fenics

[dokken]

I am assuming that you are using legacy FEniCS.

@jackmoss

File “/mnt/c/Users/Giacomo/Documents/GitHub/pacs_new/PACS_project2/Darcy/mlda/GwFlow.py”, line 33, in init
self.V = FunctionSpace(self.mesh, ‘Lagrange’, 1)

Then you need to install a compatible version of ufl, see:

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…