try if this makes it work on windows

src/mxdev/including.py

@@ -1,22 +1,22 @@
 from configparser import ConfigParser
 from configparser import ExtendedInterpolation
+from pathlib import Path
 from urllib import parse
 from urllib import request
 
 import os
-import pathlib
 import tempfile
 import typing
 
 
 def resolve_dependencies(
-    file_or_url: typing.Union[str, pathlib.Path],
+    file_or_url: typing.Union[str, Path],
     tmpdir: str,
     http_parent=None,
-) -> typing.List[pathlib.Path]:
+) -> typing.List[Path]:
     """Resolve dependencies of a file or url
 
-    The result is a list of pathlib.Path objects, starting with the
+    The result is a list of Path objects, starting with the
     given file_or_url and followed by all file_or_urls referenced from it.
 
     The file_or_url is assumed to be a ini file or url to such, with an option key "include"
@@ -28,15 +28,19 @@ def resolve_dependencies(
         parsed = parse.urlparse(str(file_or_url))
         if parsed.scheme:
             with request.urlopen(str(file_or_url)) as fio:
-                tf = tempfile.NamedTemporaryFile(suffix=".ini", dir=str(tmpdir))
+                tf = tempfile.NamedTemporaryFile(
+                    suffix=".ini",
+                    dir=str(tmpdir),
+                    delete=False,
+                )
                 tf.write(fio.read())
                 tf.flush()
-                file = pathlib.Path(tf.name)
+                file = Path(tf.name)
             parts = list(parsed)
-            parts[2] = str(pathlib.Path(parts[2]).parent)
+            parts[2] = str(Path(parts[2]).parent)
             http_parent = parse.urlunparse(parts)
         else:
-            file = pathlib.Path(file_or_url)
+            file = Path(file_or_url)
     else:
         file = file_or_url
     if not file.exists():
@@ -59,7 +63,7 @@ def resolve_dependencies(
     return file_list
 
 
-def read_with_included(file_or_url: typing.Union[str, pathlib.Path]) -> ConfigParser:
+def read_with_included(file_or_url: typing.Union[str, Path]) -> ConfigParser:
     """Read a file or url and include all referenced files,
 
     Parse the result as a ConfigParser and return it.