Hi,
After having installed `pyadjoint` by running `firedrake-update --install pyadjoint` I am getting `AttributeError: 'CoordinatelessFunction' object has no attribute 'block_variable'` on all calls to `solve` or `assemble` e.g.:
```
solve(F == 0, self.I, bcs=bcs)
File "/home/bock/bin/firedrake/src/pyadjoint/fenics_adjoint/solving.py", line 28, in solve
block = SolveBlock(*args, **kwargs)
File "/home/bock/bin/firedrake/src/pyadjoint/fenics_adjoint/solving.py", line 112, in __init__
self.add_dependency(c.block_variable)
File "/home/bock/bin/firedrake/src/firedrake/firedrake/function.py", line 275, in __getattr__
return getattr(self._data, name)
AttributeError: 'CoordinatelessFunction' object has no attribute 'block_variable'
```
>From the error above it seems that the constellation of my imports is incorrect, and that the (I believe) correct `Function` in firedrake_adjoint/types/function.py is not used. I have been playing around with different combinations of `from {firedrake_adjoint,
pyadjoint} import *` without success.
Can you please point me in the direction of documentation that can help me modify my code to cater for the new change?
`firedrake-status`:
```
---------------------------------------------------------------------------
|Package |Branch |Revision |Modified |
---------------------------------------------------------------------------
|COFFEE |master |5bb1b30 |False |
|FInAT |master |ef12759 |False |
|PyOP2 |master |8a918cfc |False |
|fiat |master |4a201c7 |False |
|firedrake |master |3cf27a5f |False |
|h5py |firedrake |c1e4a81 |False |
|libspatialindex |master |4768bf3 |True |
|petsc |firedrake |3c589c124b|False |
|petsc4py |firedrake |3f09f6d |False |
|pyadjoint |master |89b15bd |False |
|tsfc |master |e6882a1 |False |
|ufl |master |bd0376da |False |
---------------------------------------------------------------------------
```
Best regards,
Andreas Bock