MAINT: version bounds before 1.8.0rc1

[tylerjereddy]

• attempt to add upper version bounds
  before 1.8.0rc1

@rgommers I usually depend on you to find my mistakes on the version bounds stuff.

For reference, for maintenance/1.7.x last time we did this for the bounds: #14145

[rgommers]

I'll check if we can bump this to <60.0.0 by removing the pins in master.

[rgommers]

I'm actually not sure if we should bump to 59.5 or 60.0. I think the former is safer, because it's not yet clear to me in which release setuptools will re-enable its vendored distutils copy.

[rgommers]

For the record: this got changed to 60.0

[rgommers]

Overall looks good, a few minor things. And I still need to deal with setuptools and oldest-supported-numpy changes syncing check. I'll work on that now.

[rgommers]

Maybe you can cherry-pick commit b568120 into this PR as well?

[tylerjereddy]

Maybe you can cherry-pick commit b568120 into this PR as well?

I did that, and the other stuff suggested I think (currently with the newer setuptools which is perhaps undecided, mostly because I didn't see the second comment fast enough).

[rgommers]

I did that, and the other stuff suggested I think (currently with the newer setuptools which is perhaps undecided, mostly because I didn't see the second comment fast enough).

Okay, let's leave that for now. It doesn't matter for rc1, so it's easy to change after. Actually that setuptools release will come out well before 1.8.0 final.

[rgommers]

LGTM, thanks Tyler.

[tylerjereddy]

ok, 1.8.0rc1 wheel builds are running

[tylerjereddy]

64-bit Python 3.8 windows failure for wheel build--I'll try restarting, but pasting below as well (this kind of multiprocessing thing seems familiar lately, and we did add something related in MacPython/scipy-wheels#144 to run_scipy_tests.py):

________________ TestDifferentialEvolutionSolver.test_parallel ________________
[gw1] win32 -- Python 3.8.0 C:\Python38-x64\python.exe
C:\Python38-x64\lib\site-packages\scipy\optimize\tests\test__differential_evolution.py:615: in test_parallel
    solver.solve()
        bounds     = [(0.0, 2.0), (0.0, 2.0)]
        p          = <multiprocessing.pool.Pool state=TERMINATE pool_size=2>
        self       = <scipy.optimize.tests.test__differential_evolution.TestDifferentialEvolutionSolver object at 0x00000173AC674EB0>
        solver     = <scipy.optimize._differentialevolution.DifferentialEvolutionSolver object at 0x00000173AC632A30>
C:\Python38-x64\lib\multiprocessing\pool.py:733: in __exit__
    self.terminate()
        exc_tb     = None
        exc_type   = None
        exc_val    = None
        self       = <multiprocessing.pool.Pool state=TERMINATE pool_size=2>
C:\Python38-x64\lib\multiprocessing\pool.py:656: in terminate
    self._terminate()
        self       = <multiprocessing.pool.Pool state=TERMINATE pool_size=2>
C:\Python38-x64\lib\multiprocessing\util.py:201: in __call__
    res = self._callback(*self._args, **self._kwargs)
        _finalizer_registry = {(None, 10): <Finalize object, callback=_close_handles, args=(2128, 2136)>, (None, 11): <Finalize object, callback=_close_handles, args=(2196, 2172)>}
        getpid     = <built-in function getpid>
        self       = <Finalize object, callback=_terminate_pool, args=(<_queue.SimpleQueue object at 0x00000173AC658E00>, <multiprocessing....aemon 944)>, <Thread(Thread-112, stopped daemon 848)>, <Thread(Thread-113, stopped daemon 1688)>, {}), exitpriority=15>
        sub_debug  = <function sub_debug at 0x00000173983E48B0>
        wr         = None
C:\Python38-x64\lib\multiprocessing\pool.py:710: in _terminate_pool
    p.terminate()
        cache      = {}
        change_notifier = <multiprocessing.queues.SimpleQueue object at 0x00000173AC674730>
        cls        = <class 'multiprocessing.pool.Pool'>
        inqueue    = <multiprocessing.queues.SimpleQueue object at 0x00000173AC632880>
        outqueue   = <multiprocessing.queues.SimpleQueue object at 0x00000173ACD24970>
        p          = <SpawnProcess name='SpawnPoolWorker-8' pid=316 parent=1028 stopped exitcode=0 daemon>
        pool       = [<SpawnProcess name='SpawnPoolWorker-7' pid=384 parent=1028 stopped exitcode=-SIGTERM daemon>, <SpawnProcess name='SpawnPoolWorker-8' pid=316 parent=1028 stopped exitcode=0 daemon>]
        result_handler = <Thread(Thread-113, stopped daemon 1688)>
        task_handler = <Thread(Thread-112, stopped daemon 848)>
        taskqueue  = <_queue.SimpleQueue object at 0x00000173AC658E00>
        worker_handler = <Thread(Thread-111, stopped daemon 944)>
C:\Python38-x64\lib\multiprocessing\process.py:133: in terminate
    self._popen.terminate()
        self       = <SpawnProcess name='SpawnPoolWorker-8' pid=316 parent=1028 stopped exitcode=0 daemon>
C:\Python38-x64\lib\multiprocessing\popen_spawn_win32.py:123: in terminate
    _winapi.TerminateProcess(int(self._handle), TERMINATE)
E   PermissionError: [WinError 5] Access is denied
        self       = <multiprocessing.popen_spawn_win32.Popen object at 0x00000173AC663970>
============================== warnings summary ===============================

[tylerjereddy]

ok, we lucked out, restarting worked