fix: Windows MSVC detection + managed interpreter Lib/ path

- dispatcher.py: find cl.exe via filesystem glob when vcvarsall not run
- core.py: sync_interpreter now detects Lib/ vs lib/ dynamically for
  Windows managed interpreters (fixes uv_ffi never syncing to cpython-X.Y)
- egg cleanup and dist-info cleanup both use same Windows-aware path logic

Modified:
  • src/omnipkg/core.py (+12/-6 lines)
  • src/omnipkg/dispatcher.py (+14/-1 lines)

[gitship-generated]

Author: 1minds3t

src/omnipkg/core.py

@@ -6806,8 +6806,10 @@ def sync_interpreter(py_ver, target_exe):
                 # Detect egg-based pip (e.g. pip 20.2.2 on Python 3.7)
                 # and inject it into PYTHONPATH so -m pip works in subprocess
                 import glob, os
-                sp = Path(target_exe).parent.parent / "lib"
-                egg_paths = glob.glob(str(sp / "python*/site-packages/pip-*.egg"))
+                _interp_root = Path(target_exe).parent.parent
+                _lib_dir = _interp_root / "Lib" if (_interp_root / "Lib").exists() else _interp_root / "lib"
+                sp = _lib_dir
+                egg_paths = glob.glob(str(sp / "python*/site-packages/pip-*.egg")) or glob.glob(str(sp / "site-packages/pip-*.egg"))
                 env = os.environ.copy()
                 if egg_paths:
                     existing = env.get("PYTHONPATH", "")
@@ -6832,9 +6834,11 @@ def sync_interpreter(py_ver, target_exe):
                     except Exception:
                         pass
                     try:
-                        sp_path = Path(target_exe).parent.parent / "lib"
+                        _ir = Path(target_exe).parent.parent
+                        sp_path = _ir / "Lib" if (_ir / "Lib").exists() else _ir / "lib"
                         import glob as _glob
-                        for sp_dir in _glob.glob(str(sp_path / "python*/site-packages")):
+                        _sp_dirs = _glob.glob(str(sp_path / "python*/site-packages")) or _glob.glob(str(sp_path / "site-packages"))
+                        for sp_dir in _sp_dirs:
                             sp_dir = Path(sp_dir)
                             egg_link = sp_dir / "omnipkg.egg-link"
                             if egg_link.exists():
@@ -6852,9 +6856,11 @@ def sync_interpreter(py_ver, target_exe):
                 # Clean up stale omnipkg dist-info dirs (leave only current version)
                 if result.returncode == 0:
                     try:
-                        sp_path = Path(target_exe).parent.parent / "lib"
+                        _ir2 = Path(target_exe).parent.parent
+                        sp_path = _ir2 / "Lib" if (_ir2 / "Lib").exists() else _ir2 / "lib"
                         import glob as _glob2
-                        for sp_dir in _glob2.glob(str(sp_path / "python*/site-packages")):
+                        _sp_dirs2 = _glob2.glob(str(sp_path / "python*/site-packages")) or _glob2.glob(str(sp_path / "site-packages"))
+                        for sp_dir in _sp_dirs2:
                             sp_dir = Path(sp_dir)
                             for di in sp_dir.glob("omnipkg-*.dist-info"):
                                 ver_in_name = di.name.replace("omnipkg-", "").replace(".dist-info", "")

src/omnipkg/dispatcher.py

@@ -366,8 +366,21 @@ def _maybe_install_c_dispatcher():
     compiler_args = []
 
     if sys.platform == "win32":
-        # Try MSVC cl.exe first, then MinGW gcc
+        # Try MSVC cl.exe first (in PATH or common VS install locations)
         cl = shutil.which("cl")
+        if not cl:
+            # vcvarsall not run — search common MSVC install paths directly
+            import glob as _cgl
+            _vs_patterns = [
+                r"C:\Program Files\Microsoft Visual Studio\*\*\VC\Tools\MSVC\*in\Hostx64d\cl.exe",
+                r"C:\Program Files (x86)\Microsoft Visual Studio\*\*\VC\Tools\MSVC\*in\Hostx64d\cl.exe",
+                r"C:\Program Files (x86)\Microsoft Visual Studio\*\*\VC\Tools\MSVC\*in\HostX86d\cl.exe",
+            ]
+            for _pat in _vs_patterns:
+                _matches = _cgl.glob(_pat)
+                if _matches:
+                    cl = _matches[0]
+                    break
         if cl:
             compiler = cl
             compiler_args = ["/O2", "/Fe:{out}", "{src}", "ws2_32.lib"]