This test doesn't work on Mac either.

nedbat · nedbat · commit 12c5fcd57fd1 · 2021-01-02T11:28:42.000-05:00
diff --git a/tests/test_process.py b/tests/test_process.py
@@ -743,7 +743,7 @@ def test_fullcoverage(self):                        # pragma: no metacov
         self.assertGreater(line_counts(data)['os.py'], 50)
 
     @xfail(
-        env.PYPY3 and (env.PYPYVERSION >= (7, 1, 1)) and env.LINUX,
+        env.PYPY3 and (env.PYPYVERSION >= (7, 1, 1)),
         "https://bitbucket.org/pypy/pypy/issues/3074"
     )
     def test_lang_c(self):

Original file line number	Diff line number	Diff line change
`@@ -743,7 +743,7 @@ def test_fullcoverage(self): # pragma: no metacov`
`743`	`743`	`self.assertGreater(line_counts(data)['os.py'], 50)`
`744`	`744`
`745`	`745`	`@xfail(`
`746`		`- env.PYPY3 and (env.PYPYVERSION >= (7, 1, 1)) and env.LINUX,`
	`746`	`+ env.PYPY3 and (env.PYPYVERSION >= (7, 1, 1)),`
`747`	`747`	`"https://bitbucket.org/pypy/pypy/issues/3074"`
`748`	`748`	`)`
`749`	`749`	`def test_lang_c(self):`