Не собирается mayavi

Хочу установить sci-visualization/mayavi. У этого пакета в зависимостях dev-python/enthoughtbase, на котором установка спотыкается:

 * CPV:  dev-python/enthoughtbase-3.0.3
 * REPO: gentoo
 * USE:  amd64 elibc_glibc kernel_linux multilib userland_GNU
>>> Unpacking source...
>>> Unpacking EnthoughtBase-3.0.3.tar.gz to /var/tmp/portage/dev-python/enthoughtbase-3.0.3/work
>>> Source unpacked in /var/tmp/portage/dev-python/enthoughtbase-3.0.3/work
>>> Preparing source in /var/tmp/portage/dev-python/enthoughtbase-3.0.3/work/EnthoughtBase-3.0.3 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-python/enthoughtbase-3.0.3/work/EnthoughtBase-3.0.3 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-python/enthoughtbase-3.0.3/work/EnthoughtBase-3.0.3 ...
 * Building of dev-python/enthoughtbase-3.0.3 with CPython 2.6...
python2.6 setup.py build -b build-2.6
warning: build_py: byte-compiling is disabled, skipping.
warning: install_lib: byte-compiling is disabled, skipping.
zip_safe flag not set; analyzing archive contents...
Traceback (most recent call last):
  File "setup.py", line 115, in <module>
    zip_safe = False,
  File "/usr/lib64/python2.6/distutils/core.py", line 113, in setup
    _setup_distribution = dist = klass(attrs)
  File "/usr/lib64/python2.6/site-packages/setuptools/dist.py", line 221, in __init__
    self.fetch_build_eggs(attrs.pop('setup_requires'))
  File "/usr/lib64/python2.6/site-packages/setuptools/dist.py", line 245, in fetch_build_eggs
    parse_requirements(requires), installer=self.fetch_build_egg
  File "/usr/lib64/python2.6/site-packages/pkg_resources.py", line 538, in resolve
    dist = best[req.key] = env.best_match(req, self, installer)
  File "/usr/lib64/python2.6/site-packages/pkg_resources.py", line 780, in best_match
    return self.obtain(req, installer) # try and download/install
  File "/usr/lib64/python2.6/site-packages/pkg_resources.py", line 792, in obtain
    return installer(requirement)
  File "/usr/lib64/python2.6/site-packages/setuptools/dist.py", line 293, in fetch_build_egg
    return cmd.easy_install(req)
  File "/usr/lib64/python2.6/site-packages/setuptools/command/easy_install.py", line 471, in easy_install
    return self.install_item(spec, dist.location, tmpdir, deps)
  File "/usr/lib64/python2.6/site-packages/setuptools/command/easy_install.py", line 501, in install_item
    dists = self.install_eggs(spec, download, tmpdir)
  File "/usr/lib64/python2.6/site-packages/setuptools/command/easy_install.py", line 680, in install_eggs
    return self.build_and_install(setup_script, setup_base)
  File "/usr/lib64/python2.6/site-packages/setuptools/command/easy_install.py", line 962, in build_and_install
    eggs.append(self.install_egg(dist.location, setup_base))
  File "/usr/lib64/python2.6/site-packages/setuptools/command/easy_install.py", line 718, in install_egg
    (os.path.basename(egg_path),os.path.dirname(destination)))
  File "/usr/lib64/python2.6/distutils/cmd.py", line 358, in execute
    util.execute(func, args, msg, dry_run=self.dry_run)
  File "/usr/lib64/python2.6/distutils/util.py", line 399, in execute
    apply(func, args)
  File "/usr/lib64/python2.6/site-packages/setuptools/command/easy_install.py", line 1024, in unpack_and_compile
    self.byte_compile(to_compile)
  File "/usr/lib64/python2.6/site-packages/setuptools/command/easy_install.py", line 1036, in byte_compile
    byte_compile(to_compile, optimize=0, force=1, dry_run=self.dry_run)
  File "/usr/lib64/python2.6/distutils/util.py", line 453, in byte_compile
    raise DistutilsByteCompileError('byte-compiling is disabled.')
distutils.errors.DistutilsByteCompileError: byte-compiling is disabled.
 * ERROR: dev-python/enthoughtbase-3.0.3 failed:
 *   Building failed with CPython 2.6 in distutils_building() function
 * 
 * Call stack:
 *     ebuild.sh, line   54:  Called src_compile
 *   environment, line 2702:  Called distutils_src_compile
 *   environment, line  680:  Called python_execute_function 'distutils_building'
 *   environment, line 1760:  Called die
 * The specific snippet of code:
 *                       die "${failure_message}";
 * 
 * If you need support, post the output of 'emerge --info =dev-python/enthoughtbase-3.0.3',
 * the complete build log and the output of 'emerge -pqv =dev-python/enthoughtbase-3.0.3'.
 * The complete build log is located at '/var/tmp/portage/dev-python/enthoughtbase-3.0.3/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-python/enthoughtbase-3.0.3/temp/environment'.
 * S: '/var/tmp/portage/dev-python/enthoughtbase-3.0.3/work/EnthoughtBase-3.0.3'

В чем может быть проблема? И почему "byte-compiling is disabled"?
emerge --info =dev-python/enthoughtbase-3.0.3: http://www.pastebin.ru/310711