I checked the current version from develop and now we get the following error:

vagrant@precicevm:~/Desktop$ python3
Python 3.8.5 (default, Jul 28 2020, 12:59:40) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import fenics
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/fenics/__init__.py", line 7, in <module>
    from dolfin import *
  File "/usr/lib/petsc/lib/python3/dist-packages/dolfin/__init__.py", line 144, in <module>
    from .fem.assembling import (assemble, assemble_system, assemble_multimesh, assemble_mixed,
  File "/usr/lib/petsc/lib/python3/dist-packages/dolfin/fem/assembling.py", line 38, in <module>
    from ufl.form import sub_forms_by_domain
ImportError: cannot import name 'sub_forms_by_domain' from 'ufl.form' (/home/vagrant/.local/lib/python3.8/site-packages/ufl/form.py)
>>>

This is a good old friend of mine: See precice/fenics-adapter#103 and especially https://fenicsproject.discourse.group/t/installing-python-package-with-fenics-dependency-breaks-fenics-installation/4476. I would suggest implementing the fix from the forum post directly in the vm.

I already tried this manually in the vm and it seems to work:

vagrant@precicevm:~/Desktop$ pip3 uninstall -y fenics-ufl
Found existing installation: fenics-ufl 2019.1.0
Uninstalling fenics-ufl-2019.1.0:
  Successfully uninstalled fenics-ufl-2019.1.0
vagrant@precicevm:~/Desktop$ python3
Python 3.8.5 (default, Jul 28 2020, 12:59:40) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import fenics
>>>

Let's keep this issue open. Problem has slightly shifted, but is still there.

Uh oh!

FEniCS is not working #4

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