Arch Linux

Description:

python-pytorch needs python-sympy added as dependency.

See:

* https://github.com/pytorch/vision/issues/7034,
* https://github.com/jzbor/sdiff-gtk/issues/7#issuecomment-1474520403


Additional info:
* package version(s): python-pytorch 2.0.0rc5-2


Steps to reproduce:

1. Install community/python-pytorch version 2.0.0rc5-2
2. Run python -c 'import torch'
3. observe the following error:

```
No sympy found
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python3.10/site-packages/torch/__init__.py", line 1465, in <module>
from . import _meta_registrations
File "/usr/lib/python3.10/site-packages/torch/_meta_registrations.py", line 7, in <module>
from torch._decomp import _add_op_to_registry, global_decomposition_table, meta_table
File "/usr/lib/python3.10/site-packages/torch/_decomp/__init__.py", line 169, in <module>
import torch._decomp.decompositions
File "/usr/lib/python3.10/site-packages/torch/_decomp/decompositions.py", line 10, in <module>
import torch._prims as prims
File "/usr/lib/python3.10/site-packages/torch/_prims/__init__.py", line 33, in <module>
from torch._subclasses.fake_tensor import FakeTensor, FakeTensorMode
File "/usr/lib/python3.10/site-packages/torch/_subclasses/__init__.py", line 3, in <module>
from torch._subclasses.fake_tensor import (
File "/usr/lib/python3.10/site-packages/torch/_subclasses/fake_tensor.py", line 13, in <module>
from torch._guards import Source
File "/usr/lib/python3.10/site-packages/torch/_guards.py", line 78, in <module>
class ShapeGuard(NamedTuple):
File "/usr/lib/python3.10/site-packages/torch/_guards.py", line 79, in ShapeGuard
expr: sympy.Expr
NameError: name 'sympy' is not defined
```

4. install python-sympy
5. repeat 2.
6. do not observe the error anymore