From PEP 517:
> All command-line scripts provided by the build-required packages must
be present in the build environment’s PATH. For example, if a project
declares a build-requirement on flit, then the following must work as a
mechanism for running the flit command-line tool:
>
> ```python
> import subprocess
> import shutil
> subprocess.check_call([shutil.which("flit"), ...])
> ```
Fixes#9991
---------
Co-authored-by: Charles Tapley Hoyt <cthoyt@gmail.com>
It used to report:
```
» mypy
python/uv/_build_backend.py:40: error: Incompatible types in assignment (expression has type "list[str]", variable has type "CompletedProcess[bytes]") [assignment]
python/uv/_build_backend.py:41: error: Value of type "CompletedProcess[bytes]" is not indexable [index]
python/uv/_build_backend.py:46: error: Value of type "CompletedProcess[bytes]" is not indexable [index]
Found 3 errors in 1 file (checked 6 source files)
```
So, I had to fix this problem by renaming the `result` var.
