fix: add extra space after ]

cibuildwheel/windows.py

@@ -177,8 +177,11 @@ def pep_518_cp35_workaround(package_dir: Path, env: Dict[str, str]) -> None:
             if 'build-system' in data
             else []
         )
+
         if requirements:
-            shell(['pip', 'install'] + requirements, env=env)
+            # Workaround for bug when ]>= is present, #421
+            requirements = [r.replace("]", "] ") for r in requirements]
+            call(['pip', 'install'] + requirements, env=env)
 
 
 def build(options: BuildOptions) -> None:

test/test_pep518.py

@@ -27,6 +27,7 @@ basic_project.files[
 [build-system]
 requires = [
     "setuptools >= 42",
+    "setuptools_scm[toml]>=4.1.2",
     "wheel",
     "requests==2.22.0; python_version<'3.6'",
     "requests==2.23.0; python_version>='3.6'"
@@ -47,3 +48,6 @@ def test_pep518(tmp_path):
     # check that the expected wheels are produced
     expected_wheels = utils.expected_wheels("spam", "0.1.0")
     assert set(actual_wheels) == set(expected_wheels)
+
+    assert not (project_dir / "42").exists()
+    assert not (project_dir / "4.1.2").exists()