crash with both python 2 and python 3 on osX. I attach the crash report with python 3.

Any help is more than welcome.

David.

=====

confetti:sage dcoudert$ ./sage
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 8.8.rc0, Release Date: 2019-06-09                 │
│ Using Python 3.7.3. Type "help()" for help.                        │
└────────────────────────────────────────────────────────────────────┘
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ Warning: this is a prerelease version, and it may be unstable.     ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

**********************************************************************

Oops, Sage crashed. We do our best to make it stable, but...

A crash report was automatically generated with the following information:
  - A verbatim copy of the crash traceback.
  - A copy of your input history during this session.
  - Data on your current Sage configuration.

It was left in the file named:
'/Users/dcoudert/.sage/ipython-5.0.0/Sage_crash_report.txt'
If you can email this file to the developers, the information in it will help
them in understanding and correcting the problem.

You can mail it to: sage-support at sage-supp...@googlegroups.com
with the subject 'Sage Crash Report'.

If you want to do it now, the following command will work (under Unix):
mail -s 'Sage Crash Report' sage-supp...@googlegroups.com < /Users/dcoudert/.sage/ipython-5.0.0/Sage_crash_report.txt

In your email, please also include information about:
- The operating system under which the crash happened: Linux, macOS, Windows,
  other, and which exact version (for example: Ubuntu 16.04.3, macOS 10.13.2,
  Windows 10 Pro), and whether it is 32-bit or 64-bit;
- How Sage was installed: using pip or conda, from GitHub, as part of
  a Docker container, or other, providing more detail if possible;
- How to reproduce the crash: what exact sequence of instructions can one
  input to get the same crash? Ideally, find a minimal yet complete sequence
  of instructions that yields the crash.

To ensure accurate tracking of this issue, please file a report about it at:

Hit <Enter> to quit (your terminal may close):
c

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***************************************************************************

IPython post-mortem report

{'commit_hash': '033ab93c7',
 'commit_source': 'installation',
 'default_encoding': 'UTF-8',
 'ipython_path': 
'/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/IPython',
 'ipython_version': '5.8.0',
 'os_name': 'posix',
 'platform': 'Darwin-14.5.0-x86_64-i386-64bit',
 'sys_executable': '/Users/dcoudert/sage3/sage/local/bin/python3',
 'sys_platform': 'darwin',
 'sys_version': '3.7.3 (default, May 30 2019, 12:47:19) \n'
                '[Clang 7.0.2 (clang-700.1.81)]'}

***************************************************************************



***************************************************************************

Crash traceback:

---------------------------------------------------------------------------
---------------------------------------------------------------------------
ImportError      Python 3.7.3: /Users/dcoudert/sage3/sage/local/bin/python3
                                                   Sun Jun  9 19:12:23 2019
A problem occurred executing Python code.  Here is the sequence of function
calls leading up to the error, with the most recent (innermost) call last.
/Users/dcoudert/sage3/sage/src/bin/sage-ipython in <module>()
      1 #!/usr/bin/env sage-python23
      2 # -*- coding: utf-8 -*-
      3 """
      4 Sage IPython startup script.
      5 """
      6 
      7 # Display startup banner. Do this before anything else to give the user
      8 # early feedback that Sage is starting.
      9 from sage.misc.banner import banner
     10 banner()
     11 
     12 from sage.repl.interpreter import SageTerminalApp
     13 
     14 app = SageTerminalApp.instance()
---> 15 app.initialize()
        global app.initialize = <bound method TerminalIPythonApp.initialize of 
<sage.repl.interpreter.SageTerminalApp object at 0x10c6094a8>>
     16 app.start()

<decorator-gen-110> in initialize(self=<sage.repl.interpreter.SageTerminalApp 
object>, argv=None)

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/traitlets/config/application.py
 in catch_config_error(method=<function TerminalIPythonApp.initialize>, 
app=<sage.repl.interpreter.SageTerminalApp object>, *args=(None,), **kwargs={})
     72     TRAITLETS_APPLICATION_RAISE_CONFIG_FILE_ERROR = False
     73 else:
     74     raise ValueError("Unsupported value for environment variable: 
'TRAITLETS_APPLICATION_RAISE_CONFIG_FILE_ERROR' is set to '%s' which is none of 
 {'0', '1', 'false', 'true', ''}."% _envvar )
     75 
     76 
     77 @decorator
     78 def catch_config_error(method, app, *args, **kwargs):
     79     """Method decorator for catching invalid config 
(Trait/ArgumentErrors) during init.
     80 
     81     On a TraitError (generally caused by bad config), this will print 
the trait's
     82     message, and exit the app.
     83 
     84     For use on init methods, to prevent invoking excepthook on invalid 
input.
     85     """
     86     try:
---> 87         return method(app, *args, **kwargs)
        method = <function TerminalIPythonApp.initialize at 0x10d5a0d08>
        app = <sage.repl.interpreter.SageTerminalApp object at 0x10c6094a8>
        args = (None,)
        kwargs = {}
     88     except (TraitError, ArgumentError) as e:
     89         app.print_help()
     90         app.log.fatal("Bad config encountered during initialization:")
     91         app.log.fatal(str(e))
     92         app.log.debug("Config at the time: %s", app.config)
     93         app.exit(1)
     94 
     95 
     96 class ApplicationError(Exception):
     97     pass
     98 
     99 
    100 class LevelFormatter(logging.Formatter):
    101     """Formatter with additional `highlevel` record
    102 

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/IPython/terminal/ipapp.py
 in initialize(self=<sage.repl.interpreter.SageTerminalApp object>, argv=None)
    301 
    302         return super(TerminalIPythonApp, self).parse_command_line(argv)
    303     
    304     @catch_config_error
    305     def initialize(self, argv=None):
    306         """Do actions after construct, but before starting the app."""
    307         super(TerminalIPythonApp, self).initialize(argv)
    308         if self.subapp is not None:
    309             # don't bother initializing further, starting subapp
    310             return
    311         # print self.extra_args
    312         if self.extra_args and not self.something_to_run:
    313             self.file_to_run = self.extra_args[0]
    314         self.init_path()
    315         # create the shell
--> 316         self.init_shell()
        self.init_shell = <bound method SageTerminalApp.init_shell of 
<sage.repl.interpreter.SageTerminalApp object at 0x10c6094a8>>
    317         # and draw the banner
    318         self.init_banner()
    319         # Now a variety of things that happen after the banner is 
printed.
    320         self.init_gui_pylab()
    321         self.init_extensions()
    322         self.init_code()
    323 
    324     def init_shell(self):
    325         """initialize the InteractiveShell instance"""
    326         # Create an InteractiveShell instance.
    327         # shell.display_banner should always be False for the terminal
    328         # based app, because we call shell.show_banner() by hand below
    329         # so the banner shows *before* all extension loading stuff.
    330         self.shell = self.interactive_shell_class.instance(parent=self,
    331                         profile_dir=self.profile_dir,

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/repl/interpreter.py
 in init_shell(self=<sage.repl.interpreter.SageTerminalApp object>)
    743         self.shell.has_sage_extensions = SAGE_EXTENSION in 
self.extensions
    744 
    745         # Load the %lprun extension if available
    746         try:
    747             import line_profiler
    748         except ImportError:
    749             pass
    750         else:
    751             self.extensions.append('line_profiler')
    752 
    753         if self.shell.has_sage_extensions:
    754             self.extensions.remove(SAGE_EXTENSION)
    755 
    756             # load sage extension here to get a crash if
    757             # something is wrong with the sage library
--> 758             self.shell.extension_manager.load_extension(SAGE_EXTENSION)
        self.shell.extension_manager.load_extension = <bound method 
ExtensionManager.load_extension of <IPython.core.extensions.ExtensionManager 
object at 0x10dd98c88>>
        global SAGE_EXTENSION = 'sage'
    759 
    760 

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/IPython/core/extensions.py
 in load_extension(self=<IPython.core.extensions.ExtensionManager object>, 
module_str='sage')
     70 
     71         Returns the string "already loaded" if the extension is already 
loaded,
     72         "no load function" if the module doesn't have a 
load_ipython_extension
     73         function, or None if it succeeded.
     74         """
     75         if module_str in self.loaded:
     76             return "already loaded"
     77         
     78         from IPython.utils.syspathcontext import prepended_to_syspath
     79         
     80         with self.shell.builtin_trap:
     81             if module_str not in sys.modules:
     82                 with prepended_to_syspath(self.ipython_extension_dir):
     83                     __import__(module_str)
     84             mod = sys.modules[module_str]
---> 85             if self._call_load_ipython_extension(mod):
        self._call_load_ipython_extension = <bound method 
ExtensionManager._call_load_ipython_extension of 
<IPython.core.extensions.ExtensionManager object at 0x10dd98c88>>
        mod = <module 'sage' from 
'/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/__init__.py'>
     86                 self.loaded.add(module_str)
     87             else:
     88                 return "no load function"
     89 
     90     def unload_extension(self, module_str):
     91         """Unload an IPython extension by its module name.
     92 
     93         This function looks up the extension's name in ``sys.modules`` 
and
     94         simply calls ``mod.unload_ipython_extension(self)``.
     95         
     96         Returns the string "no unload function" if the extension 
doesn't define
     97         a function to unload itself, "not loaded" if the extension 
isn't loaded,
     98         otherwise None.
     99         """
    100         if module_str not in self.loaded:

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/IPython/core/extensions.py
 in _call_load_ipython_extension(self=<IPython.core.extensions.ExtensionManager 
object>, mod=<module 'sage' from 
'/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/__init__.py'>)
    117         """
    118         from IPython.utils.syspathcontext import prepended_to_syspath
    119 
    120         if (module_str in self.loaded) and (module_str in sys.modules):
    121             self.unload_extension(module_str)
    122             mod = sys.modules[module_str]
    123             with prepended_to_syspath(self.ipython_extension_dir):
    124                 reload(mod)
    125             if self._call_load_ipython_extension(mod):
    126                 self.loaded.add(module_str)
    127         else:
    128             self.load_extension(module_str)
    129 
    130     def _call_load_ipython_extension(self, mod):
    131         if hasattr(mod, 'load_ipython_extension'):
--> 132             mod.load_ipython_extension(self.shell)
        mod.load_ipython_extension = <function load_ipython_extension at 
0x10c6b9840>
        self.shell = <sage.repl.interpreter.SageTerminalInteractiveShell object 
at 0x10c56ae10>
    133             return True
    134 
    135     def _call_unload_ipython_extension(self, mod):
    136         if hasattr(mod, 'unload_ipython_extension'):
    137             mod.unload_ipython_extension(self.shell)
    138             return True
    139 
    140     def install_extension(self, url, filename=None):
    141         """Download and install an IPython extension. 
    142 
    143         If filename is given, the file will be so named (inside the 
extension
    144         directory). Otherwise, the name from the URL will be used. The 
file must
    145         have a .py or .zip extension; otherwise, a ValueError will be 
raised.
    146 
    147         Returns the full path to the installed file.

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/__init__.py 
in 
load_ipython_extension(*args=(<sage.repl.interpreter.SageTerminalInteractiveShell
 object>,))
      1 __all__ = ['all']
      2 
      3 # Set sage.__version__ to the current version number. This is analogous
      4 # to many other Python packages.
      5 from sage.version import version as __version__
      6 
      7 # Make sure that the correct zlib library is loaded. This is needed
      8 # to prevent the system zlib to be loaded instead of the Sage one.
      9 # See https://trac.sagemath.org/ticket/23122
     10 import zlib
     11 
     12 # IPython calls this when starting up
     13 def load_ipython_extension(*args):
     14     import sage.repl.ipython_extension
---> 15     sage.repl.ipython_extension.load_ipython_extension(*args)
        sage.repl.ipython_extension.load_ipython_extension = <function 
load_ipython_extension at 0x10f3f2d08>
        args = (<sage.repl.interpreter.SageTerminalInteractiveShell object at 
0x10c56ae10>,)
     16 
     17 
     18 # Monkey-patch inspect.isfunction() to support Cython functions.
     19 def isfunction(obj):
     20     """
     21     Check whether something is a function.
     22 
     23     We assume that anything which has a genuine ``__code__``
     24     attribute (not using ``__getattr__`` overrides) is a function.
     25     This is meant to support Cython functions.
     26 
     27     EXAMPLES::
     28 
     29         sage: from inspect import isfunction
     30         sage: def f(): pass
     31         sage: isfunction(f)

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/repl/ipython_extension.py
 in wrapper(*args=(<sage.repl.interpreter.SageTerminalInteractiveShell 
object>,), **kwargs={})
    547         ....:     if work:
    548         ....:         return 'foo worked'
    549         ....:     raise RuntimeError("foo didn't work")
    550         sage: foo(False)
    551         Traceback (most recent call last):
    552         ...
    553         RuntimeError: foo didn't work
    554         sage: foo(True)
    555         'foo worked'
    556         sage: foo(False)
    557         sage: foo(True)
    558     """
    559     @wraps(func)
    560     def wrapper(*args, **kwargs):
    561         if not wrapper.has_run:
--> 562             result = func(*args, **kwargs)
        result = undefined
        global func = undefined
        args = (<sage.repl.interpreter.SageTerminalInteractiveShell object at 
0x10c56ae10>,)
        kwargs = {}
    563             wrapper.has_run = True
    564             return result
    565     wrapper.has_run = False
    566     return wrapper
    567 
    568 
    569 @run_once
    570 def load_ipython_extension(ip):
    571     """
    572     Load the extension in IPython.
    573     """
    574     # this modifies ip
    575     SageCustomizations(shell=ip)

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/repl/ipython_extension.py
 in 
load_ipython_extension(ip=<sage.repl.interpreter.SageTerminalInteractiveShell 
object>)
    560     def wrapper(*args, **kwargs):
    561         if not wrapper.has_run:
    562             result = func(*args, **kwargs)
    563             wrapper.has_run = True
    564             return result
    565     wrapper.has_run = False
    566     return wrapper
    567 
    568 
    569 @run_once
    570 def load_ipython_extension(ip):
    571     """
    572     Load the extension in IPython.
    573     """
    574     # this modifies ip
--> 575     SageCustomizations(shell=ip)
        global SageCustomizations = <class 
'sage.repl.ipython_extension.SageCustomizations'>
        global shell = undefined
        ip = <sage.repl.interpreter.SageTerminalInteractiveShell object at 
0x10c56ae10>

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/repl/ipython_extension.py
 in __init__(self=<sage.repl.ipython_extension.SageCustomizations object>, 
shell=<sage.repl.interpreter.SageTerminalInteractiveShell object>)
    418     def __init__(self, shell=None):
    419         """
    420         Initialize the Sage plugin.
    421         """
    422         self.shell = shell
    423 
    424         self.auto_magics = SageMagics(shell)
    425         self.shell.register_magics(self.auto_magics)
    426 
    427         import sage.misc.edit_module as edit_module
    428         self.shell.set_hook('editor', edit_module.edit_devel)
    429 
    430         self.init_inspector()
    431         self.init_line_transforms()
    432 
--> 433         import sage.all # until sage's import hell is fixed
        sage.all = undefined
    434 
    435         self.shell.verbose_quit = True
    436         self.set_quit_hook()
    437 
    438         self.register_interface_magics()
    439 
    440         if SAGE_IMPORTALL == 'yes':
    441             self.init_environment()
    442 
    443     def register_interface_magics(self):
    444         """
    445         Register magics for each of the Sage interfaces
    446         """
    447         from sage.repl.interface_magic import InterfaceMagic
    448         InterfaceMagic.register_all(self.shell)

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/all.py in 
<module>()
     82 
     83 import sage.misc.lazy_import
     84 from sage.misc.all       import *         # takes a while
     85 from sage.typeset.all    import *
     86 from sage.repl.all       import *
     87 
     88 from sage.misc.sh import sh
     89 
     90 from sage.libs.all       import *
     91 from sage.data_structures.all import *
     92 from sage.doctest.all    import *
     93 
     94 from sage.structure.all  import *
     95 from sage.rings.all      import *
     96 from sage.arith.all      import *
---> 97 from sage.matrix.all     import *
        global sage.matrix.all = undefined
     98 
     99 from sage.symbolic.all   import *
    100 from sage.modules.all    import *
    101 from sage.monoids.all    import *
    102 from sage.algebras.all   import *
    103 from sage.modular.all    import *
    104 from sage.sat.all        import *
    105 from sage.schemes.all    import *
    106 from sage.graphs.all     import *
    107 from sage.groups.all     import *
    108 from sage.arith.power    import generic_power as power
    109 from sage.databases.all  import *
    110 from sage.categories.all import *
    111 from sage.sets.all       import *
    112 from sage.probability.all import *

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/matrix/__init__.py
 in <module>()
      1 # Resolve a cyclic import
----> 2 import sage.matrix.args
        global sage.matrix.args = undefined

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/matrix/args.pyx
 in init sage.matrix.args (build/cythonized/sage/matrix/args.c:20073)()
     10 # This program is free software: you can redistribute it and/or modify
     11 # it under the terms of the GNU General Public License as published by
     12 # the Free Software Foundation, either version 2 of the License, or
     13 # (at your option) any later version.
     14 #                  http://www.gnu.org/licenses/
     15 
#*****************************************************************************
     16 
     17 from __future__ import absolute_import, generator_stop
     18 
     19 cimport cython
     20 from cpython.sequence cimport PySequence_Fast
     21 from cysignals.signals cimport sig_check
     22 from cypari2.gen cimport Gen
     23 from cypari2.types cimport typ, t_MAT, t_VEC, t_COL, t_VECSMALL, 
t_LIST, t_STR, t_CLOSURE
     24 
---> 25 from .matrix_space import MatrixSpace
        global matrix_space = undefined
        global MatrixSpace = undefined
     26 from sage.rings.all import ZZ, RDF, CDF
     27 from sage.structure.coerce cimport (coercion_model,
     28         is_numpy_type, py_scalar_parent)
     29 from sage.structure.element cimport Element, RingElement
     30 from sage.arith.long cimport pyobject_to_long
     31 from sage.misc.misc_c import sized_iter
     32 from sage.categories import monoids
     33 
     34 
     35 CommutativeMonoids = monoids.Monoids().Commutative()
     36 
     37 
     38 cdef inline bint element_is_scalar(Element x):
     39     """
     40     Should this element be considered a scalar (as opposed to a vector)?

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/matrix/matrix_space.py
 in <module>()
     31 # (at your option) any later version.
     32 #                  https://www.gnu.org/licenses/
     33 # 
****************************************************************************
     34 from __future__ import print_function, absolute_import
     35 from six.moves import range
     36 from six import iteritems, integer_types
     37 
     38 # System imports
     39 import sys
     40 import operator
     41 
     42 # Sage matrix imports
     43 from . import matrix_generic_dense
     44 from . import matrix_generic_sparse
     45 
---> 46 from . import matrix_modn_sparse
        global matrix_modn_sparse = undefined
     47 
     48 from . import matrix_mod2_dense
     49 from . import matrix_gf2e_dense
     50 
     51 from . import matrix_integer_dense
     52 from . import matrix_integer_sparse
     53 
     54 from . import matrix_rational_dense
     55 from . import matrix_rational_sparse
     56 
     57 from . import matrix_polynomial_dense
     58 from . import matrix_mpolynomial_dense
     59 
     60 # Sage imports
     61 from sage.misc.superseded import deprecation

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/matrix/matrix_integer_sparse.pxd
 in init sage.matrix.matrix_modn_sparse 
(build/cythonized/sage/matrix/matrix_modn_sparse.cpp:16296)()
      1 from sage.modules.vector_integer_sparse cimport mpz_vector
      2 from sage.ext.mod_int cimport mod_int
      3 from .matrix_sparse cimport Matrix_sparse
      4 
----> 5 cdef class Matrix_integer_sparse(Matrix_sparse):
        global cdef = undefined
        global Matrix_integer_sparse = undefined
        global Matrix_sparse = undefined
      6     cdef mpz_vector* _matrix
      7 
      8     cdef _mod_int_c(self, mod_int p)

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/matrix/matrix_integer_dense.pxd
 in init sage.matrix.matrix_integer_sparse 
(build/cythonized/sage/matrix/matrix_integer_sparse.cpp:15822)()
      1 from sage.libs.gmp.types cimport *
      2 from sage.libs.flint.types cimport fmpz_mat_t
      3 
      4 from .matrix_dense cimport Matrix_dense
      5 from sage.rings.integer cimport Integer
      6 from sage.ext.mod_int cimport *
      7 
      8 ctypedef long* GEN
      9 
---> 10 cdef class Matrix_integer_dense(Matrix_dense):
        global cdef = undefined
        global Matrix_integer_dense = undefined
        global Matrix_dense = undefined
     11     cdef fmpz_mat_t _matrix
     12     cdef object _pivots
     13     cdef int mpz_height(self, mpz_t height) except -1
     14     cdef _mod_int_c(self, mod_int modulus)
     15     cdef _mod_two(self)
     16     cdef _pickle_version0(self)
     17     cdef _unpickle_version0(self, data)
     18     cpdef _export_as_string(self, int base=?)
     19     cdef void set_unsafe_mpz(self, Py_ssize_t i, Py_ssize_t j, const 
mpz_t value)
     20     cdef void set_unsafe_si(self, Py_ssize_t i, Py_ssize_t j, long 
value)
     21     cdef void set_unsafe_double(self, Py_ssize_t i, Py_ssize_t j, 
double value)
     22     cdef inline void get_unsafe_mpz(self, Py_ssize_t i, Py_ssize_t j, 
mpz_t value)
     23     cdef inline double get_unsafe_double(self, Py_ssize_t i, Py_ssize_t 
j)
     24 
     25     # HNF Modn
     26     cdef int _hnf_modn(Matrix_integer_dense self, Matrix_integer_dense 
res,
     27             unsigned int det) except -1
     28     cdef int* _hnf_modn_impl(Matrix_integer_dense self, unsigned int 
det,
     29             Py_ssize_t nrows, Py_ssize_t ncols) except NULL
     30 
     31     cdef Matrix_integer_dense _new(self, Py_ssize_t nrows, Py_ssize_t 
ncols)

/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/matrix/matrix_rational_dense.pxd
 in init sage.matrix.matrix_integer_dense 
(build/cythonized/sage/matrix/matrix_integer_dense.c:55199)()
      1 from sage.libs.flint.types cimport fmpz_t, fmpq_mat_t
      2 from .matrix_dense cimport Matrix_dense
      3 
----> 4 cdef class Matrix_rational_dense(Matrix_dense):
        global cdef = undefined
        global Matrix_rational_dense = undefined
        global Matrix_dense = undefined
      5     cdef fmpq_mat_t _matrix
      6 
      7     cdef int fmpz_denom(self, fmpz_t d) except -1
      8     cdef int fmpz_height(self, fmpz_t height) except -1
      9 #    cdef int _rescale(self, mpq_t a) except -1
     10 
     11     cdef _pickle_version0(self)
     12     cdef _unpickle_version0(self, data)
     13     cpdef _export_as_string(self, int base=?)
     14 
     15     cdef _add_ui_unsafe_assuming_int(self, Py_ssize_t i, Py_ssize_t j, 
unsigned long int n)
     16     cdef _sub_ui_unsafe_assuming_int(self, Py_ssize_t i, Py_ssize_t j, 
unsigned long int n)
     17 
     18     cdef inline Matrix_rational_dense _new_matrix(self, Py_ssize_t 
nrows, Py_ssize_t ncols)
     19 
     20 cdef class MatrixWindow:
     21     cdef Matrix_rational_dense _matrix
     22     cdef int _row, _col, _nrows, _ncols

ImportError: 
dlopen(/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/matrix/matrix_rational_dense.cpython-37m-darwin.so,
 2): Library not loaded: 
/Users/dcoudert/sage3/sage/local/lib/libopenblas_haswellp-r0.3.5.dylib
  Referenced from: 
/Users/dcoudert/sage3/sage/local/lib/python3.7/site-packages/sage/matrix/matrix_rational_dense.cpython-37m-darwin.so
  Reason: image not found

***************************************************************************

History of session input:
*** Last line of input (may not be in above history):

Le 9 juin 2019 à 19:08, Frédéric Chapoton <fchapot...@gmail.com> a écrit :

Something missing in the mirrors ?

FileNotMirroredError: tarball does not exist on mirror network
************************************************************************
Error: downloading configure-323.tar.gz failed


Le dimanche 9 juin 2019 17:19:28 UTC+2, Volker Braun a écrit :
As always, you can get the latest beta version from the "develop" git branch. Alternatively, the self-contained source tarball is at http://www.sagemath.org/download-latest.html 


2393acebc3 (tag: 8.8.rc0, trac/develop) Updated SageMath version to 8.8.rc0
d53fd952c8 Trac #27942: Upgrade brial to 1.2.5
1e30f76809 Trac #27890: Fix a pickling error for codes
6c3a8bd774 Trac #27924: faster generator for noncrossing partitions
a3a7e83b7d Trac #27530: small change in debugger.py
cf1f934a9f Trac #25351: Ideal operations unsupported over QQbar
0c02b6b7b1 Trac #17908: Sage doesn't grok unsolved integral results from fricas
ece3afee96 Trac #27930: Py3: Fix combinat.set_partition_ordered doctests
12d8480936 Trac #27935: A regression in divisors of function fields
974dd47f6f Trac #27927: some pep details in sage-pkg
790dd07b79 Trac #27922: some cleanup in homology folder
d26c6c1fd6 Trac #27918: some details in subword_complex
b9aee296a8 Trac #27900: removed deprecated dynamics code from schemes
97cbf0ec3b Trac #27850: Fix a bug in gens_two method for ideals of function fields
37a5846af9 Trac #26991: Refactor function field code
cc0c8552af Trac #27931: fix LazyPowerSeriesRing in other variable than x
91fccfa40d Trac #27925: py3: tiny fixes in gap3 interface
ffdd2345c9 Trac #27920: Upgrade pynormaliz to 2.7 to fix installation error when a 'configure' script is accessible in PATH
024eb1916b Trac #27919: some details in Steenrod algebras
c1b606e703 Trac #27912: Add GAP package PackageManager to gap_packages
275dfbfdc0 Trac #27910: Three.js: Save screenshot as PNG
71cecffbaa Trac #27893: Coercion bug with mpz
92300feff5 Trac #27700: fix is_simplicial for non-full-dimensional polytopes
ca4560d077 Trac #27468: Containment check for subgroups broken.
f276d4b633 Trac #27847: openblas 0.3.6
b6c623a069 Trac #27906: correct usage of all([...]) in many places
5372779dd1 Trac #27903: some care for all in matrix2
44c8a4e2f9 Trac #27915: Fix py3_syntax.py doctest on distros
41e4710d58 Trac #27914: py3: hash collisions of Laurent polynomials
b4a1854a77 Trac #27909: py3: fix a doctest in binary_form_reduce
6a4a8c0e71 Trac #27904: py3: fix last doctest in interfaces
d791ed2d39 Trac #27902: 2 more folders in python3-known-passing.txt
54386e7bab Trac #27899: cleanup of Dyck words
dce13c427b Trac #27898: pep cleanup of basic_stats
575bc563d7 Trac #27817: remove SAGE_INSTALL_GCC variable
b6d3c08d3c Trac #27787: py3: matroids.utilities.lift_cross_ratios
23c6588c24 Trac #27673: Fix Polyhedron.volume() in 0-dimensional space
859ebb6a65 Trac #5583: coercion bug in perm groups
777c3a9bd3 Trac #27871: some doc details in projective_curve
fcf0291084 Trac #27894: some pep and pyflakes care in words
167bbc9cb4 Trac #27892: some pep cleanup in elliptic curves over number fields
7a65573f6d Trac #27879: some pep and pyflakes cleanup in torsion_quadratic_module.py
1851edc567 Trac #27877: faster left-right symmetry for unlabelled binary trees
59df72bad0 Trac #27486: Use sdh_cmake for packages that use cmake
c18d869464 Trac #27889: py3 fixes for matroids
4cf85e6e72 Trac #27888: py3 fix for src/sage/all.py
2a506aa1b9 Trac #27887: sorting interval-posets using cubical coordinates
acb869cadd Trac #27885: Py3: symbolic/_expression_.pyx fix some errors
8481b70fba Trac #27856: Tangent vectors should act as derivations on scalar fields
f6e6ae8d25 Trac #27529: py3: tiny fix in env.py
8fc2040b27 Trac #26552: interface glucose-syrup
716fb69754 (tag: 8.8.beta7) Updated SageMath version to 8.8.beta7


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