fix: installing wheel from trailing slash url

src/poetry/repositories/pypi_repository.py

@@ -1,9 +1,9 @@
 import logging
-import os
 import urllib.parse
 
 from collections import defaultdict
 from pathlib import Path
+from pathlib import PurePath
 from typing import TYPE_CHECKING
 from typing import Dict
 from typing import List
@@ -422,28 +422,35 @@ def _get_info_from_urls(self, urls: Dict[str, List[str]]) -> "PackageInfo":
 
         return self._get_info_from_sdist(urls["sdist"][0])
 
+    @staticmethod
+    def _helper_filename(url: str) -> str:
+        """Extract the basename of file at a url, dealing with terminal slash."""
+        return PurePath(urllib.parse.urlparse(url).path).name
+
     def _get_info_from_wheel(self, url: str) -> "PackageInfo":
         from poetry.inspection.info import PackageInfo
 
-        wheel_name = urllib.parse.urlparse(url).path.rsplit("/")[-1]
-        self._log(f"Downloading wheel: {wheel_name}", level="debug")
-        filename = os.path.basename(wheel_name)
+        self._log(
+            f"Downloading wheel: {url}",
+            level="debug",
+        )
 
         with temporary_directory() as temp_dir:
-            filepath = Path(temp_dir) / filename
+            filepath = Path(temp_dir) / self._helper_filename(url)
             self._download(url, str(filepath))
 
             return PackageInfo.from_wheel(filepath)
 
     def _get_info_from_sdist(self, url: str) -> "PackageInfo":
         from poetry.inspection.info import PackageInfo
 
-        sdist_name = urllib.parse.urlparse(url).path
-        self._log(f"Downloading sdist: {sdist_name.rsplit('/')[-1]}", level="debug")
-        filename = os.path.basename(sdist_name)
+        self._log(
+            f"Downloading sdist: {url}",
+            level="debug",
+        )
 
         with temporary_directory() as temp_dir:
-            filepath = Path(temp_dir) / filename
+            filepath = Path(temp_dir) / self._helper_filename(url)
             self._download(url, str(filepath))
 
             return PackageInfo.from_sdist(filepath)