NIntegrate Overflow - when scipy is not installed ?

[rocky]

$ py.test -sxv test/test_nintegrate.py
==================================== test session starts ====================================
platform linux -- Python 3.7.10[pypy-7.3.5-final], pytest-6.2.4, py-1.10.0, pluggy-0.13.1 -- /home/rocky/.pyenv/versions/pypy3.7-7.3.5/bin/python
cachedir: .pytest_cache
rootdir: /src/external-vcs/github/mathics/Mathics
collected 2 items                                                                           

test/test_nintegrate.py::test_nintegrate[NIntegrate[x^2, {x,0,1}]-1/3.-] PASSED
test/test_nintegrate.py::test_nintegrate[NIntegrate[x^2 y^(-.5), {x,0,1},{y,0,1}]-1.-] FAILED

========================================= FAILURES ==========================================
_______________ test_nintegrate[NIntegrate[x^2 y^(-.5), {x,0,1},{y,0,1}]-1.-] _______________

str_expr = 'NIntegrate[x^2 y^(-.5), {x,0,1},{y,0,1}]', str_expected = '1.', msg = ''
message = ''

    @pytest.mark.parametrize("str_expr, str_expected, msg", tests_for_nintegrate)
    def test_nintegrate(str_expr: str, str_expected: str, msg: str, message=""):
>       result = evaluate(str_expr)

test/test_nintegrate.py:45: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
test/helper.py:13: in evaluate
    return session.evaluate(str_expr)
mathics/session.py:65: in evaluate
    self.last_result = expr.evaluate(self.evaluation)
mathics/core/expression.py:1315: in evaluate
    expr, reevaluate = expr.evaluate_next(evaluation)
mathics/core/expression.py:1449: in evaluate_next
    result = rule.apply(new, evaluation, fully=False)
mathics/core/rules.py:67: in apply
    self.pattern.match(yield_match, expression, {}, evaluation, fully=fully)
mathics/core/pattern.py:291: in match
    self.head.match(yield_head, expression.get_head(), vars, evaluation)
mathics/core/pattern.py:159: in match
    yield_func(vars, None)
mathics/core/pattern.py:282: in yield_head
    yield_choice, expression, attributes, head_vars
mathics/core/pattern.py:429: in get_pre_choices
    yield_func(vars)
mathics/core/pattern.py:270: in yield_choice
    wrap_oneid=expression.get_head_name() != "System`MakeBoxes",
mathics/core/pattern.py:661: in match_leaf
    include_flattened=include_flattened,
mathics/core/pattern.py:456: in get_wrappings
    yield_func(items[0])
mathics/core/pattern.py:652: in yield_wrapping
    wrap_oneid=wrap_oneid,
mathics/builtin/patterns.py:852: in match
    self.pattern.match(yield_func, expression, new_vars, evaluation)
mathics/builtin/patterns.py:1050: in match
    yield_func(vars, None)
mathics/core/pattern.py:636: in match_yield
    wrap_oneid=wrap_oneid,
mathics/core/pattern.py:661: in match_leaf
    include_flattened=include_flattened,
mathics/core/pattern.py:467: in get_wrappings
    yield_func(sequence)
mathics/core/pattern.py:652: in yield_wrapping
    wrap_oneid=wrap_oneid,
mathics/builtin/patterns.py:852: in match
    self.pattern.match(yield_func, expression, new_vars, evaluation)
mathics/builtin/patterns.py:1110: in match
    yield_func(vars, None)
mathics/core/pattern.py:636: in match_yield
    wrap_oneid=wrap_oneid,
mathics/core/pattern.py:661: in match_leaf
    include_flattened=include_flattened,
mathics/core/pattern.py:467: in get_wrappings
    yield_func(sequence)
mathics/core/pattern.py:652: in yield_wrapping
    wrap_oneid=wrap_oneid,
mathics/builtin/patterns.py:1439: in match
    yield_func(new_vars, None)
mathics/core/pattern.py:640: in match_yield
    yield_func(new_vars, items_rest)
mathics/core/pattern.py:618: in leaf_yield
    (list(chain(rest_expression[0], items_rest[0])), next_rest[1]),
mathics/core/pattern.py:618: in leaf_yield
    (list(chain(rest_expression[0], items_rest[0])), next_rest[1]),
mathics/core/rules.py:42: in yield_match
    new_expression = self.do_replace(expression, vars, options, evaluation)
mathics/core/rules.py:129: in do_replace
    return self.function(evaluation=evaluation, options=options, **vars_noctx)
mathics/builtin/numeric.py:685: in apply_with_func_domain
    return from_python(result)
mathics/core/expression.py:118: in from_python
    return Real(arg)
mathics/core/expression.py:2398: in __new__
    return MachineReal.__new__(MachineReal, value)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

cls = <class 'mathics.core.expression.MachineReal'>, value = nan

    def __new__(cls, value) -> "MachineReal":
        self = Number.__new__(cls)
        self.value = float(value)
        if math.isinf(self.value) or math.isnan(self.value):
>           raise OverflowError
E           OverflowError

mathics/core/expression.py:2467: OverflowError
================================== short test summary info ==================================
FAILED test/test_nintegrate.py::test_nintegrate[NIntegrate[x^2 y^(-.5), {x,0,1},{y,0,1}]-1.-]
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
================================ 1 failed, 1 passed in 8.60s ================================
$