Compiling a.pyx because it changed.
[1/1] Cythonizing a.pyx
/home/user202729/miniforge3/envs/sage-dev/lib/python3.11/site-packages/Cython/Compiler/Main.py:373: FutureWarning: Cython directive 'language_level' not set, using '3' (Py3). This has changed from earlier releases! File: /tmp/a.pyx
  tree = Parsing.p_module(s, pxd, full_module_name)

Error compiling Cython file:
------------------------------------------------------------
...

cdef object eat(double x):
        return 1

def call(double x):
        y = eat(libc.math.sqrt(x))
             ^
------------------------------------------------------------

a.pyx:8:13: cimported module has no attribute 'math'

Error compiling Cython file:
------------------------------------------------------------
...

cdef object eat(double x):
        return 1

def call(double x):
        y = eat(libc.math.sqrt(x))
             ^
------------------------------------------------------------

a.pyx:8:13: Compiler crash in AnalyseExpressionsTransform

ModuleNode.body = StatListNode(a.pyx:2:0)
StatListNode.stats[2] = StatListNode(a.pyx:7:0)
StatListNode.stats[0] = DefNode(a.pyx:7:0,
    is_cyfunction = True,
    modifiers = [...]/0,
    name = 'call',
    np_args_idx = [...]/0,
    num_required_args = 1,
    outer_attrs = [...]/2,
    py_wrapper_required = True,
    reqd_kw_flags_cname = '0',
    used = True)
File 'ExprNodes.py', line 5945, in infer_type: SimpleCallNode(a.pyx:8:8,
    result_is_used = True,
    use_managed_ref = True)
File 'ExprNodes.py', line 5924, in infer_type: SimpleCallNode(a.pyx:8:23,
    result_is_used = True,
    use_managed_ref = True)
File 'ExprNodes.py', line 7552, in infer_type: AttributeNode(a.pyx:8:13,
    attribute = 'math',
    is_attribute = 1,
    needs_none_check = True,
    result_is_used = True,
    use_managed_ref = True)

Compiler crash traceback from this point on:
  File "/home/user202729/miniforge3/envs/sage-dev/lib/python3.11/site-packages/Cython/Compiler/ExprNodes.py", line 7552, in infer_type
    if node.entry.type and node.entry.type.is_cfunction:
       ^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'type'
Traceback (most recent call last):
  File "/tmp/setup.py", line 4, in <module>
    setup(ext_modules = cythonize("a.pyx", include_path=[
                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user202729/miniforge3/envs/sage-dev/lib/python3.11/site-packages/Cython/Build/Dependencies.py", line 1111, in cythonize
    cythonize_one(*args)
  File "/home/user202729/miniforge3/envs/sage-dev/lib/python3.11/site-packages/Cython/Build/Dependencies.py", line 1254, in cythonize_one
    raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: a.pyx