Inline setup.py for consistency.

setuptools/tests/test_pep517.py

@@ -45,7 +45,8 @@ class BuildBackendCaller(BuildBackendBase):
 
 @pytest.fixture
 def build_backend(tmpdir):
-    setup_script = DALS("""
+    defn = {
+        'setup.py': DALS("""
             from setuptools import setup
 
             setup(
@@ -55,13 +56,11 @@ def build_backend(tmpdir):
                 entry_points={'console_scripts': ['hi = hello.run']},
                 zip_safe=False,
             )
-        """)
-    defn = {
-        'setup.py': setup_script,
+            """),
         'hello.py': DALS("""
             def run():
                 print('hello')
-            """)
+            """),
     }
     build_files(defn, prefix=str(tmpdir))
     with tmpdir.as_cwd():