增加exe打包配置

packaging/pyi_rth_crt_path.py

@@ -0,0 +1,89 @@
+"""
+PyInstaller 运行时钩子：固定 MSVC 运行库加载顺序，再注册 DLL 搜索路径。
+
+打包阶段在 strip 掉各 wheel 自带 CRT 后，会 **仅嵌入** 构建所用 Python ``DLLs``
+下的 ``vcruntime140.dll`` / ``vcruntime140_1.dll`` / ``msvcp140.dll`` 至 ``_MEIPASS``。
+本钩子在导入 chroma/torch 等扩展 **之前**，用 ``ctypes.WinDLL(绝对路径)`` 从 **同一目录**
+（优先 exe 旁若用户自行放置了完整三件套，否则 ``_MEIPASS``）预加载，避免进程落到
+目标机 ``System32`` 里较旧版本（如 14.29）再与 native 扩展不兼容触发 ``0xc0000005``。
+
+随后再 ``add_dll_directory`` exe 目录与 ``_MEIPASS``，并调整 ``PATH``。不使用 ``SetDllDirectoryW``。
+"""
+
+
+def _preload_msvc_crt_once():
+    """若 exe 目录或 ``_MEIPASS`` 下存在 ``msvcp140.dll``，则按依赖顺序预加载该目录内 CRT。"""
+    import ctypes
+    import sys
+    from pathlib import Path
+
+    if sys.platform != "win32" or not getattr(sys, "frozen", False):
+        return
+
+    order = ("vcruntime140.dll", "vcruntime140_1.dll", "msvcp140.dll")
+    search_dirs = []
+    try:
+        exe_parent = Path(sys.executable).resolve().parent
+        search_dirs.append(exe_parent)
+    except OSError:
+        pass
+    meipass = getattr(sys, "_MEIPASS", None)
+    if meipass:
+        search_dirs.append(Path(meipass))
+
+    for d in search_dirs:
+        if not d.is_dir():
+            continue
+        if not (d / "msvcp140.dll").is_file():
+            continue
+        for name in order:
+            p = d / name
+            if p.is_file():
+                try:
+                    ctypes.WinDLL(str(p))
+                except OSError:
+                    pass
+        return
+
+
+def _apply_dll_search_paths():
+    """将 exe 目录与 ``_MEIPASS`` 注册为 DLL 目录，并置于 PATH 最前（exe 目录优先）。"""
+    import os
+    import sys
+    from pathlib import Path
+
+    if not getattr(sys, "frozen", False):
+        return
+
+    dirs = []
+    try:
+        exe_dir = str(Path(sys.executable).resolve().parent)
+        if exe_dir:
+            dirs.append(exe_dir)
+    except OSError:
+        pass
+
+    meipass = getattr(sys, "_MEIPASS", None)
+    if meipass:
+        dirs.append(meipass)
+
+    for d in dirs:
+        if not d:
+            continue
+        try:
+            if hasattr(os, "add_dll_directory"):
+                os.add_dll_directory(d)
+        except OSError:
+            pass
+
+    path = os.environ.get("PATH", "")
+    prefix = os.pathsep.join([d for d in dirs if d])
+    if not prefix:
+        return
+    if path.startswith(prefix):
+        return
+    os.environ["PATH"] = f"{prefix}{os.pathsep}{path}"
+
+
+_preload_msvc_crt_once()
+_apply_dll_search_paths()