try nox fork

Author: davidhewitt

.github/workflows/ci.yml

@@ -399,7 +399,7 @@ jobs:
 
       - name: Install test dependencies
         shell: msys2 {0}
-        run: python -m pip install --upgrade nox pip
+        run: python -m pip install --upgrade pip 'nox @ git+https://github.com/davidhewitt/nox.git@mingw-fix'
 
       - name: Create libpython symlink
         shell: msys2 {0}
@@ -409,7 +409,7 @@ jobs:
 
       - name: Test examples
         shell: msys2 {0}
-        run: PATH="$PATH:/c/Users/runneradmin/.cargo/bin" MSYSTEM= nox -s test-mingw
+        run: PATH="$PATH:/c/Users/runneradmin/.cargo/bin" nox -s test-mingw
 
   test-emscripten:
     name: Test Emscripten