Fix Python 3.14+ compatibility issues

[chrisburr]

This PR addresses several compatibility issues that arise when using crossenv with Python 3.14+, fixing import loops and deprecation warnings.

Make tracebacks involving _patch_module more readable by including file path

• Improves debugging experience by showing actual file paths in tracebacks

Use posix.uname_result rather than making a named tuple

• Fixes import loop in Python 3.14 caused by crossenv's patching conflicting with collections.namedtuple import

Python 3.14 traceback (click to expand)

Fatal Python error: init_import_site: Failed to import the site module
Python runtime state: initialized
Traceback (most recent call last):
  File "/.../build_env/venv/lib/site.py", line 177, in <module>
  File "/.../build_env/venv/lib/site.py", line 122, in __init__
  File "/.../build_env/venv/lib/site.py", line 170, in manually_patch_loaded
  File "/.../build_env/venv/lib/site.py", line 56, in _patch_module
  File "/.../build_env/venv/lib/os-patch.py", line 1, in <module>
  File "<frozen importlib._bootstrap>", line 1371, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1333, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1267, in _find_spec
  File "/.../build_env/venv/lib/importlib-machinery-patch.py", line 18, in _PathFinder_find_spec
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 507, in get_path
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 497, in get_paths
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 276, in _expand_vars
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 625, in get_config_vars
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 525, in _init_config_vars
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 393, in _init_posix
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 373, in _get_sysconfigdata
  File "/.../build_env/lib/python3.14/importlib/__init__.py", line 88, in import_module
  File "<frozen importlib._bootstrap>", line 1398, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1371, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1333, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1267, in _find_spec
  File "/.../build_env/venv/lib/importlib-machinery-patch.py", line 18, in _PathFinder_find_spec
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 507, in get_path
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 497, in get_paths
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 286, in _expand_vars
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 262, in _subst_vars
AttributeError: 'installed_base'

Don't pass any argument to is_python_build due to deprecation since Python 3.12

• The argument was deprecated in Python 3.12 and will be removed in Python 3.15
• Fixes another import loop in Python 3.14 (this time with warnings)

Python 3.14 traceback (click to expand)

Fatal Python error: init_import_site: Failed to import the site module
Python runtime state: initialized
Traceback (most recent call last):
  File "/.../build_env/venv/lib/site.py", line 177, in <module>
  File "/.../build_env/venv/lib/site.py", line 122, in __init__
  File "/.../build_env/venv/lib/site.py", line 170, in manually_patch_loaded
  File "/.../build_env/venv/lib/site.py", line 56, in _patch_module
  File "/.../build_env/venv/lib/sysconfig-patch.py", line 5, in <module>
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 225, in is_python_build
  File "<frozen importlib._bootstrap>", line 1371, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1333, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1267, in _find_spec
  File "/.../build_env/venv/lib/importlib-machinery-patch.py", line 18, in _PathFinder_find_spec
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 507, in get_path
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 497, in get_paths
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 276, in _expand_vars
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 625, in get_config_vars
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 525, in _init_config_vars
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 393, in _init_posix
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 373, in _get_sysconfigdata
  File "/.../build_env/lib/python3.14/importlib/__init__.py", line 88, in import_module
  File "<frozen importlib._bootstrap>", line 1398, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1371, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1333, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1267, in _find_spec
  File "/.../build_env/venv/lib/importlib-machinery-patch.py", line 18, in _PathFinder_find_spec
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 507, in get_path
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 497, in get_paths
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 286, in _expand_vars
  File "/.../build_env/lib/python3.14/sysconfig/__init__.py", line 262, in _subst_vars
AttributeError: 'installed_base'

[virtuald]

Thanks for fixing this!