I'm now using a completely brain-damaged way to have two 3.x python(1)s
installed: symlinks; i.e. 3.2rc2 is ~/usr/opt/.py-3.2rc2 and tip is
~/usr/opt/.cpython.  Whenever i need to test the thing i'm working on
in my free time with the old version i'm temporarily replacing a
~/usr/opt/py3k symlink (which points to .cpython otherwise).
(I'm doing this because only py3k is in $PATH, $LD_LIBRARY_PATH etc.,
but like i said...)

I don't know if you consider this to be misbehaviour, but a
moment ago i've run the test suite on an installed python(1) tip
and got these symlink-path is not --prefix-path related errors,
just if anyone is concerned (stripping output a bit):

======================================================================
FAIL: test_getsourcefile (test.test_inspect.TestRetrievingSourceCode)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/steffen/usr/opt/.cpython/lib/python3.3/test/test_inspect.py", line 279, in test_getsourcefile
    self.assertEqual(normcase(inspect.getsourcefile(mod.spam)), modfile)
AssertionError: '/Users/steffen/usr/opt/.cpython/lib/python3.3/test/inspect_fodder.py' != '/Users/steffen/usr/opt/py3k/lib/python3.3/test/inspect_fodder.py'
- /Users/steffen/usr/opt/.cpython/lib/python3.3/test/inspect_fodder.py
?                        --  ^^^^
+ /Users/steffen/usr/opt/py3k/lib/python3.3/test/inspect_fodder.py
?                          ^^

======================================================================
FAIL: test_findsource_code_in_linecache (test.test_inspect.TestBuggyCases)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/steffen/usr/opt/.cpython/lib/python3.3/test/test_inspect.py", line 387, in test_findsource_code_in_linecache
    self.assertRaises(IOError, inspect.findsource, co)
AssertionError: IOError not raised by findsource

======================================================================
FAIL: test_stack (test.test_inspect.TestInterpreterStack)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/steffen/usr/opt/.cpython/lib/python3.3/test/test_inspect.py", line 163, in test_stack
    (modfile, 16, 'eggs', ['    st = inspect.stack()\n'], 0))
AssertionError: Tuples differ: ('/Users/steffen/usr/opt/.cpyt... != ('/Users/steffen/usr/opt/py3k/...

First differing element 0:
/Users/steffen/usr/opt/.cpython/lib/python3.3/test/inspect_fodder.py
/Users/steffen/usr/opt/py3k/lib/python3.3/test/inspect_fodder.py

- ('/Users/steffen/usr/opt/.cpython/lib/python3.3/test/inspect_fodder.py',
?                          --  ^^^^

+ ('/Users/steffen/usr/opt/py3k/lib/python3.3/test/inspect_fodder.py',
?                            ^^

======================================================================
FAIL: test_trace (test.test_inspect.TestInterpreterStack)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/steffen/usr/opt/.cpython/lib/python3.3/test/test_inspect.py", line 174, in test_trace
    (modfile, 43, 'argue', ['            spam(a, b, c)\n'], 0))
AssertionError: Tuples differ: ('/Users/steffen/usr/opt/.cpyt... != ('/Users/steffen/usr/opt/py3k/...

First differing element 0:
/Users/steffen/usr/opt/.cpython/lib/python3.3/test/inspect_fodder.py
/Users/steffen/usr/opt/py3k/lib/python3.3/test/inspect_fodder.py

- ('/Users/steffen/usr/opt/.cpython/lib/python3.3/test/inspect_fodder.py',
?                          --  ^^^^

+ ('/Users/steffen/usr/opt/py3k/lib/python3.3/test/inspect_fodder.py',
?                            ^^

...

======================================================================
FAIL: test_loop_caller_importing (test.test_trace.TestCallers)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/steffen/usr/opt/py3k/lib/python3.3/test/test_trace.py", line 286, in test_loop_caller_importing
    self.assertEqual(self.tracer.results().callers, expected)
AssertionError: {(('/Users/steffen/usr/opt/.cpython/lib/python3.3/trace.py', 'trace', 'Trace.run [truncated]... != {(('/Users/steffen/usr/opt/py3k/lib/python3.3/test/test_trace.py', 'test_trace', [truncated]...