Check dependencies

Author: ddelange

.github/workflows/wheels.yml

@@ -114,6 +114,11 @@ jobs:
         cp "/msys64/${{ endsWith(matrix.only, '32') && 'mingw32' || 'mingw64' }}/bin/libcharset-1.dll" "magic"
         cp "/msys64/${{ endsWith(matrix.only, '32') && 'mingw32' || 'mingw64' }}/bin/libiconv-2.dll" "magic"
 
+    - name: Analyze DLL dependencies
+      if: runner.os == 'Windows' && endsWith(matrix.only, '32')
+      run: |
+        /msys64/mingw32/bin/objdump -p "magic/libmagic-1.dll" | grep "DLL"
+
     - uses: pypa/cibuildwheel@v2.17.0  # sync version with pip install cibuildwheel above
       timeout-minutes: 10
       with:

magic/loader.py

@@ -52,6 +52,7 @@ def _lib_candidates_macos():
 
 def _lib_candidates_windows():
     """Yield possible libmagic library names on Windows."""
+    os.environ['PATH'] = here + os.pathsep + os.environ['PATH']  # for DLLs in site-packages
     fnames = (
         "libmagic",
         "magic1",
@@ -89,7 +90,6 @@ def _lib_candidates():
 
 
 def load_lib():
-    os.environ['PATH'] = here + os.pathsep + os.environ['PATH']  # for DLLs in site-packages
     exc = []
     for lib in _lib_candidates():
         # find_library returns None when lib not found