work around Windows issue on latest Black

Thanks Rumo!
d797900386

pip/requirements.txt

@@ -12,7 +12,7 @@ attrs==21.1.0
     #   pytest
 beautifulsoup4==4.9.3
     # via -r requirements.in
-black==20.8b1
+black==21.5b0
     # via -r requirements.in
 certifi==2020.12.5
     # via requests

pylib/tests/run_format.py

@@ -19,6 +19,10 @@ if __name__ == "__main__":
         os.chdir(folder)
         args = ["--diff", "--check"]
 
+    # work around issue with latest black
+    if sys.platform == "win32":
+        os.environ["USERPROFILE"] = os.environ["HOME"]
+
     retcode = subprocess.run(
         [
             sys.executable,

pylib/tools/hookslib.py

@@ -5,7 +5,7 @@
 Code for generating hooks.
 """
 
-import re
+import os
 import subprocess
 import sys
 from dataclasses import dataclass
@@ -161,6 +161,9 @@ def write_file(path: str, hooks: List[Hook], prefix: str, suffix: str):
 
     code += "\n" + suffix
 
+    # work around issue with latest black
+    if sys.platform == "win32":
+        os.environ["USERPROFILE"] = os.environ["HOME"]
     with open(path, "wb") as file:
         file.write(code.encode("utf8"))
     subprocess.run([sys.executable, "-m", "black", "-q", path], check=True)

qt/tests/run_format.py

@@ -18,6 +18,10 @@ if __name__ == "__main__":
         os.chdir(folder)
         args = ["--diff", "--check"]
 
+    # work around issue with latest black
+    if sys.platform == "win32":
+        os.environ["USERPROFILE"] = os.environ["HOME"]
+
     retcode = subprocess.run(
         [
             sys.executable,