Fix error when wheels already exist in dist/

`build_meta.build_wheel` assumes that the only wheel in its output
directory is the one it builds, but prior to this, it also used the
`dist/` folder as its working output directory. This commit uses a
temporary directory instead, preventing an error that was triggered when
previously-generated wheel files were still sitting in `dist/`.

Fixes GH #1671

1 files changed, 2 insertions, 2 deletions

diff --git a/setuptools/py31compat.py b/setuptools/py31compat.py
index 1a0705ec..e1da7ee2 100644
--- a/setuptools/py31compat.py
+++ b/setuptools/py31compat.py
@@ -17,9 +17,9 @@ except ImportError:
         errors on deletion.
         """
 
-        def __init__(self):
+        def __init__(self, **kwargs):
             self.name = None  # Handle mkdtemp raising an exception
-            self.name = tempfile.mkdtemp()
+            self.name = tempfile.mkdtemp(**kwargs)
 
         def __enter__(self):
             return self.name