pytauri 0.8.0

Tauri binding for Python through Pyo3
Documentation 
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import sys
from multiprocessing import set_executable, set_start_method
from types import ModuleType
from typing import TYPE_CHECKING, cast

### locals
if TYPE_CHECKING:
    # i.e., std::env::current_exe()
    CURRENT_EXE = cast(str, ...)  # input
    # the pytauri extension module
    EXT_MOD = cast(ModuleType, ...)  # input


### Freezing  ###

# ref:
#
# - <https://gregoryszorc.com/docs/pyoxidizer/0.24.0/pyoxidizer_packaging_multiprocessing.html>
# - <https://github.com/python/cpython/blob/60403a5409ff2c3f3b07dd2ca91a7a3e096839c7/Lib/multiprocessing/spawn.py#L67-L95>
# - <https://pyinstaller.org/en/v6.11.1/common-issues-and-pitfalls.html#multi-processing>
# - <https://github.com/pyinstaller/pyinstaller/blob/v6.11.1/PyInstaller/hooks/rthooks/pyi_rth_multiprocessing.py>


# see also: <https://docs.python.org/3.13/library/multiprocessing.html#contexts-and-start-methods>
if sys.platform == "win32":
    set_start_method("spawn")
else:
    # Because `freeze_support` only supports Windows with `spawn`,
    # so we must set `fork` on unix, or we will get an
    # endless spawn loop of the application process.
    # See: <https://pyinstaller.org/en/stable/common-issues-and-pitfalls.html#multi-processing>
    #
    # We must set it munaually here, because the default value is:
    # - MacOs: `spawn`
    # - Linux: `forkserver` if `sys.version_info >= (3, 14)` else `fork`
    set_start_method("fork")

# we must set `executable` for `multiprocessing` manually,
# because on rust, we set `sys.executable` to actual python interpreter path.
set_executable(CURRENT_EXE)

# MUST be set, or `set_executable` will not work,
# see the implementation of `multiprocessing.spawn.get_command_line`
setattr(sys, "frozen", True)  # noqa: B010

# a private custom var, to info python we are running as standalone app.
setattr(sys, "_pytauri_standalone", True)  # noqa: B010


### Append Ext Mod  ###

sys.modules["__pytauri_ext_mod__"] = EXT_MOD