Executable permissions for scripts are reset or are not set

[stanislavlevin]

Problem:

executable permissions for scripts are reset or are not set.

How to reproduce:

1. build a project that has a compiled binary (e.g. uv):

[user@host dir]$ /usr/bin/python3 -m pyproject_installer -v build

2. install it into virtual environment and run:

[user@host dir]$ /usr/bin/python3 -m pyproject_installer run -- uv --version
...
INFO     : Command's error: [Errno 13] Permission denied: 'uv'

3. unpacked file permissions:

[user@host dir]$ ls -la .run_venv/bin/uv 
-rw-r--r-- 1 user user 29215160 Apr  8 15:04 .run_venv/bin/uv

4. packed file permissions:

[user@host dir]$ zipinfo dist/uv-0.1.26-py3-none-linux_x86_64.whl uv-0.1.26.data/scripts/uv
-rwxr-xr-x  4.6 unx 29215160 b- defN 24-Apr-08 14:41 uv-0.1.26.data/scripts/uv

ZipFile doesn't preserve file permissions in Python:
python/cpython#59999

Today's Python packaging specification is not clear about that:
https://packaging.python.org/en/latest/specifications/binary-distribution-format/

In wheel, scripts are packaged in {distribution}-{version}.data/scripts/. If the first line of a file in scripts/ starts with exactly b'#!python', rewrite to point to the correct interpreter. Unix installers may need to add the +x bit to these files if the archive was created on Windows.