Bonjour à tous,

je suis un débutant avec les systèmes linux et je rencontre un problème. Je suis sous Debian 8, je sais que le forum est pour ubuntu, mais je n'ai pas encore de mot de passe pour poster sur le forum Debian.

A l'installation de Debian 8 (sur partition), Python 2.7 est déjà installé (cf dans le synaptic par exemple).
Je souhaite installer le module scipy pour Python (module numpy déjà installé par défaut).
1er échec (cf http://www.scipy.org/install.html) :

root@PC-LATITUDE:~# apt-get install python-scipy
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
E: Impossible de trouver le paquet python-scipy

J'installe alors l'utilitaire pip de python pour télécharger scipy puis l'installer (cf https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0CDEQFjAB&url=https%3A%2F%2Fbootstrap.pypa.io%2Fget-pip.py&ei=7iOdVb-rC4X0UJrPm7AL&usg=AFQjCNE8Fo9j_sgo1hBzEoUT39H85hFDrg).
installation de pip :

root@PC-LATITUDE:~# python "/home/bpiton/Téléchargements/get-pip.py" 
Requirement already up-to-date: pip in /usr/local/lib/python2.7/dist-packages

Je tente d'installer scipy via pip (cf https://pip.pypa.io/en/latest/user_guide.html). J'obtiens alors l'ensemble d'erreur suivante (que je reconnais ne pas comprendre dans son intégralité):

root@PC-LATITUDE:~# pip install scipy
Collecting scipy
  Using cached scipy-0.15.1.tar.gz
Building wheels for collected packages: scipy
  Running setup.py bdist_wheel for scipy
  Complete output from command /usr/bin/python -c "import setuptools;__file__='/tmp/pip-build-RdpUEf/scipy/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d /tmp/tmph26J27pip-wheel-:
  lapack_opt_info:
  openblas_info:
    libraries  not found in ['/usr/local/lib', '/usr/lib', '/usr/lib/i386-linux-gnu']
    NOT AVAILABLE
  
  lapack_mkl_info:
  mkl_info:
    libraries mkl,vml,guide not found in ['/usr/local/lib', '/usr/lib', '/usr/lib/i386-linux-gnu']
    NOT AVAILABLE
  
    NOT AVAILABLE
  
  atlas_threads_info:
  Setting PTATLAS=ATLAS
    libraries ptf77blas,ptcblas,atlas not found in /usr/local/lib
    libraries lapack_atlas not found in /usr/local/lib
    libraries ptf77blas,ptcblas,atlas not found in /usr/lib/sse2
    libraries lapack_atlas not found in /usr/lib/sse2
    libraries ptf77blas,ptcblas,atlas not found in /usr/lib
    libraries lapack_atlas not found in /usr/lib
    libraries ptf77blas,ptcblas,atlas not found in /usr/lib/i386-linux-gnu/sse2
    libraries lapack_atlas not found in /usr/lib/i386-linux-gnu/sse2
    libraries ptf77blas,ptcblas,atlas not found in /usr/lib/i386-linux-gnu
    libraries lapack_atlas not found in /usr/lib/i386-linux-gnu
  numpy.distutils.system_info.atlas_threads_info
    NOT AVAILABLE
  
  atlas_info:
    libraries f77blas,cblas,atlas not found in /usr/local/lib
    libraries lapack_atlas not found in /usr/local/lib
    libraries f77blas,cblas,atlas not found in /usr/lib/sse2
    libraries lapack_atlas not found in /usr/lib/sse2
    libraries f77blas,cblas,atlas not found in /usr/lib
    libraries lapack_atlas not found in /usr/lib
    libraries f77blas,cblas,atlas not found in /usr/lib/i386-linux-gnu/sse2
    libraries lapack_atlas not found in /usr/lib/i386-linux-gnu/sse2
    libraries f77blas,cblas,atlas not found in /usr/lib/i386-linux-gnu
    libraries lapack_atlas not found in /usr/lib/i386-linux-gnu
  numpy.distutils.system_info.atlas_info
    NOT AVAILABLE
  
  /usr/lib/python2.7/dist-packages/numpy/distutils/system_info.py:1427: UserWarning:
      Atlas ([url]http://math-atlas.sourceforge.net/[/url]) libraries not found.
      Directories to search for the libraries can be specified in the
      numpy/distutils/site.cfg file (section [atlas]) or by setting
      the ATLAS environment variable.
    warnings.warn(AtlasNotFoundError.__doc__)
  lapack_info:
    libraries lapack not found in ['/usr/local/lib', '/usr/lib', '/usr/lib/i386-linux-gnu']
    NOT AVAILABLE
  
  /usr/lib/python2.7/dist-packages/numpy/distutils/system_info.py:1438: UserWarning:
      Lapack ([url]http://www.netlib.org/lapack/[/url]) libraries not found.
      Directories to search for the libraries can be specified in the
      numpy/distutils/site.cfg file (section [lapack]) or by setting
      the LAPACK environment variable.
    warnings.warn(LapackNotFoundError.__doc__)
  lapack_src_info:
    NOT AVAILABLE
  
  /usr/lib/python2.7/dist-packages/numpy/distutils/system_info.py:1441: UserWarning:
      Lapack ([url]http://www.netlib.org/lapack/[/url]) sources not found.
      Directories to search for the sources can be specified in the
      numpy/distutils/site.cfg file (section [lapack_src]) or by setting
      the LAPACK_SRC environment variable.
    warnings.warn(LapackSrcNotFoundError.__doc__)
    NOT AVAILABLE
  
  Running from scipy source directory.
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
    File "/tmp/pip-build-RdpUEf/scipy/setup.py", line 249, in <module>
      setup_package()
    File "/tmp/pip-build-RdpUEf/scipy/setup.py", line 246, in setup_package
      setup(**metadata)
    File "/usr/lib/python2.7/dist-packages/numpy/distutils/core.py", line 135, in setup
      config = configuration()
    File "/tmp/pip-build-RdpUEf/scipy/setup.py", line 173, in configuration
      config.add_subpackage('scipy')
    File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 966, in add_subpackage
      caller_level = 2)
    File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 935, in get_subpackage
      caller_level = caller_level + 1)
    File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 872, in _get_configuration_from_setup_py
      config = setup_module.configuration(*args)
    File "scipy/setup.py", line 16, in configuration
      config.add_subpackage('linalg')
    File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 966, in add_subpackage
      caller_level = 2)
    File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 935, in get_subpackage
      caller_level = caller_level + 1)
    File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 872, in _get_configuration_from_setup_py
      config = setup_module.configuration(*args)
    File "scipy/linalg/setup.py", line 18, in configuration
      raise NotFoundError('no lapack/blas resources found')
  numpy.distutils.system_info.NotFoundError: no lapack/blas resources found
  
  ----------------------------------------
  Failed building wheel for scipy
Failed to build scipy
Installing collected packages: scipy
  Running setup.py install for scipy
    Complete output from command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip-build-RdpUEf/scipy/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-6xtsW3-record/install-record.txt --single-version-externally-managed --compile:
    lapack_opt_info:
    openblas_info:
      libraries  not found in ['/usr/local/lib', '/usr/lib', '/usr/lib/i386-linux-gnu']
      NOT AVAILABLE
    
    lapack_mkl_info:
    mkl_info:
      libraries mkl,vml,guide not found in ['/usr/local/lib', '/usr/lib', '/usr/lib/i386-linux-gnu']
      NOT AVAILABLE
    
      NOT AVAILABLE
    
    atlas_threads_info:
    Setting PTATLAS=ATLAS
      libraries ptf77blas,ptcblas,atlas not found in /usr/local/lib
      libraries lapack_atlas not found in /usr/local/lib
      libraries ptf77blas,ptcblas,atlas not found in /usr/lib/sse2
      libraries lapack_atlas not found in /usr/lib/sse2
      libraries ptf77blas,ptcblas,atlas not found in /usr/lib
      libraries lapack_atlas not found in /usr/lib
      libraries ptf77blas,ptcblas,atlas not found in /usr/lib/i386-linux-gnu/sse2
      libraries lapack_atlas not found in /usr/lib/i386-linux-gnu/sse2
      libraries ptf77blas,ptcblas,atlas not found in /usr/lib/i386-linux-gnu
      libraries lapack_atlas not found in /usr/lib/i386-linux-gnu
    numpy.distutils.system_info.atlas_threads_info
      NOT AVAILABLE
    
    atlas_info:
      libraries f77blas,cblas,atlas not found in /usr/local/lib
      libraries lapack_atlas not found in /usr/local/lib
      libraries f77blas,cblas,atlas not found in /usr/lib/sse2
      libraries lapack_atlas not found in /usr/lib/sse2
      libraries f77blas,cblas,atlas not found in /usr/lib
      libraries lapack_atlas not found in /usr/lib
      libraries f77blas,cblas,atlas not found in /usr/lib/i386-linux-gnu/sse2
      libraries lapack_atlas not found in /usr/lib/i386-linux-gnu/sse2
      libraries f77blas,cblas,atlas not found in /usr/lib/i386-linux-gnu
      libraries lapack_atlas not found in /usr/lib/i386-linux-gnu
    numpy.distutils.system_info.atlas_info
      NOT AVAILABLE
    
    /usr/lib/python2.7/dist-packages/numpy/distutils/system_info.py:1427: UserWarning:
        Atlas ([url]http://math-atlas.sourceforge.net/[/url]) libraries not found.
        Directories to search for the libraries can be specified in the
        numpy/distutils/site.cfg file (section [atlas]) or by setting
        the ATLAS environment variable.
      warnings.warn(AtlasNotFoundError.__doc__)
    lapack_info:
      libraries lapack not found in ['/usr/local/lib', '/usr/lib', '/usr/lib/i386-linux-gnu']
      NOT AVAILABLE
    
    /usr/lib/python2.7/dist-packages/numpy/distutils/system_info.py:1438: UserWarning:
        Lapack ([url]http://www.netlib.org/lapack/[/url]) libraries not found.
        Directories to search for the libraries can be specified in the
        numpy/distutils/site.cfg file (section [lapack]) or by setting
        the LAPACK environment variable.
      warnings.warn(LapackNotFoundError.__doc__)
    lapack_src_info:
      NOT AVAILABLE
    
    /usr/lib/python2.7/dist-packages/numpy/distutils/system_info.py:1441: UserWarning:
        Lapack ([url]http://www.netlib.org/lapack/[/url]) sources not found.
        Directories to search for the sources can be specified in the
        numpy/distutils/site.cfg file (section [lapack_src]) or by setting
        the LAPACK_SRC environment variable.
      warnings.warn(LapackSrcNotFoundError.__doc__)
      NOT AVAILABLE
    
    Running from scipy source directory.
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-RdpUEf/scipy/setup.py", line 249, in <module>
        setup_package()
      File "/tmp/pip-build-RdpUEf/scipy/setup.py", line 246, in setup_package
        setup(**metadata)
      File "/usr/lib/python2.7/dist-packages/numpy/distutils/core.py", line 135, in setup
        config = configuration()
      File "/tmp/pip-build-RdpUEf/scipy/setup.py", line 173, in configuration
        config.add_subpackage('scipy')
      File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 966, in add_subpackage
        caller_level = 2)
      File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 935, in get_subpackage
        caller_level = caller_level + 1)
      File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 872, in _get_configuration_from_setup_py
        config = setup_module.configuration(*args)
      File "scipy/setup.py", line 16, in configuration
        config.add_subpackage('linalg')
      File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 966, in add_subpackage
        caller_level = 2)
      File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 935, in get_subpackage
        caller_level = caller_level + 1)
      File "/usr/lib/python2.7/dist-packages/numpy/distutils/misc_util.py", line 872, in _get_configuration_from_setup_py
        config = setup_module.configuration(*args)
      File "scipy/linalg/setup.py", line 18, in configuration
        raise NotFoundError('no lapack/blas resources found')
    numpy.distutils.system_info.NotFoundError: no lapack/blas resources found
    
    ----------------------------------------
Command "/usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip-build-RdpUEf/scipy/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-6xtsW3-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-RdpUEf/scipy

De ce que je comprends, il faut alors que j'installe les librairies ATLAS, BLAS et LAPACK ou alors que je trouve le fichier wheel qui n'arrive pas à être construit.
Scipy a effectivement des dépendances d'installation (cf https://packages.debian.org/jessie/python-scipy).
J'essaie alors d'installer en 1er lieu la librairie LAPACK (par exemple) :

root@PC-LATITUDE:~# apt-get install liblapack-dev
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
E: Impossible de trouver le paquet liblapack-dev

Mais en vain. J'ai essayé via aptitude, le synaptic (qui ne trouve pas "liblapack-dev"), et easy_install mais tous sont en échec pour installer une des librairies mentionnées au dessus.

Je suspecte donc qu'il y à un problème avec mon "apt-get" mais je ne trouve pas.

Quelqu'un saurait-il quoi faire ?

Merci,

Benjamin.