install.py not working with Python created by UV

[legomir]

Describe the bug here.

Environment

• OS: MacOS Sequoia 15.5
• Rez version: 3.3.0
• Rez python version: 3.11.9

To Reproduce

1. Create python by using UV: uv python install 3.11.9 -i /path/to/python
2. Run: /path/to/python/bin/python ./install.py /path/to/rez

Expected behavior
Rez install script finished python install successfully.

Actual behavior
Rez installation fails with:

~/tools/python/cpython-3.11.9-macos-aarch64-none/bin/python3.11 ./install.py ~/tools/rez/{version} -v
installing rez to /Users/pawelbernaciak/tools/rez/3.3.0...
Traceback (most recent call last):
  File "/Users/pawelbernaciak/dev/rez/./install.py", line 322, in <module>
    install(dest_dir, print_welcome=True, editable=opts.editable)
  File "/Users/pawelbernaciak/dev/rez/./install.py", line 155, in install
    create_virtual_environment(dest_dir)
  File "/Users/pawelbernaciak/dev/rez/./install.py", line 51, in create_virtual_environment
    builder.create(dest_dir)
  File "/Users/pawelbernaciak/tools/python/cpython-3.11.9-macos-aarch64-none/lib/python3.11/venv/__init__.py", line 76, in create
    self._setup_pip(context)
  File "/Users/pawelbernaciak/tools/python/cpython-3.11.9-macos-aarch64-none/lib/python3.11/venv/__init__.py", line 358, in _setup_pip
    self._call_new_python(context, '-m', 'ensurepip', '--upgrade',
  File "/Users/pawelbernaciak/tools/python/cpython-3.11.9-macos-aarch64-none/lib/python3.11/venv/__init__.py", line 354, in _call_new_python
    subprocess.check_output(args, **kwargs)
  File "/Users/pawelbernaciak/tools/python/cpython-3.11.9-macos-aarch64-none/lib/python3.11/subprocess.py", line 466, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/pawelbernaciak/tools/python/cpython-3.11.9-macos-aarch64-none/lib/python3.11/subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['/Users/pawelbernaciak/tools/rez/3.3.0/bin/python3.11', '-m', 'ensurepip', '--upgrade', '--default-pip']' died with <Signals.SIGABRT: 6>.

[legomir]

This is caused by particular way in which uv and python-build-standalone works. Normally python is build with statically linked so:

python_root
|___ lib
|      |__ libpython3.a

in distribution used by UV:

python_root
|___ lib
|      |__ libpython3.dylib

and when looking at dyn libraries used by python executable:

otool -L  ~/tools/python/cpython-3.11.9-macos-aarch64-none/bin/python
/Users/pawelbernaciak/tools/python/cpython-3.11.9-macos-aarch64-none/bin/python:
        /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 2202.0.0)
        @executable_path/../lib/libpython3.11.dylib (compatibility version 3.11.0, current version 3.11.0)
        /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1336.61.1)

Here is some context I believe:
astral-sh/python-build-standalone#381

[legomir]

I've made some test locally and got install running correctly.
Index: install.py

diff --git a/install.py b/install.py
--- a/install.py	(revision 9afb325fc853a2b7ee79f3f83bfdf966446169a9)
+++ b/install.py	(date 1761678727930)
@@ -51,7 +51,7 @@
             print(f"Failed to create virtual environment: {err}")
             sys.exit(1)
     else:
-        builder = venv.EnvBuilder(with_pip=True)
+        builder = venv.EnvBuilder(with_pip=True, symlinks=True)
         builder.create(dest_dir)

There is opts.keepsymlinks that can be pass as argument to install func to make this behaviour optional.

If that sounds good I can make PR later today :)