Error

creating build/lib.macosx-10.6-x86_64-3.4
clang -bundle -undefined dynamic_lookup -L/nix/store/fz3z1wi9fd7817g3ahwycb7fmbha2zn7-zlib-1.2.8/lib -L/nix/store/0qrad6apkhgirznlf55i93d22r3yqagq-bzip2-1.0.6/lib -L/nix/store/3rzjcw9vg1i453cd32v1ds19w3br7m6v-xz-5.2.1/lib -L/nix/store/9kqzyarfk89ha652v4767nji36g1cr6h-gdbm-1.11/lib -L/nix/store/4bjvbg5849yxxzl5qffvfl6j314y84ii-sqlite-3.8.11.1/lib -L/nix/store/a7h84y69fpmdkbckxlhl3ykw0vsaqdlv-db-5.3.28/lib -L/nix/store/ry83izz9wkpwbjkwd6z7z480a5mmsbdq-readline-6.3p08/lib -L/nix/store/8v9hszgn2bcwm5vnpbr0bx57s2cmcwp2-ncurses-5.9/lib -L/nix/store/83za6xpr2jw6s93fxz4n3hf0fqdn6hcd-openssl-1.0.1p/lib -L/nix/store/7cbfds3w0qds0h2c9llh5jqc0gdlp39w-tcl-8.6.4/lib -L/nix/store/qihzvb04rz6jysa44276pz2rnf05gm02-tk-8.6.4/lib -L/nix/store/f1g32249ra0i8g36hzns9washimhycf8-libX11-1.6.3/lib -L/nix/store/dh0cz440qh1w9gljnhikja422z2wl5nj-xproto-7.0.28/lib build/temp.macosx-10.6-x86_64-3.4/greenlet.o -L/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib -o build/lib.macosx-10.6-x86_64-3.4/greenlet.so
running tests
running test
running egg_info
creating greenlet.egg-info
writing top-level names to greenlet.egg-info/top_level.txt
writing greenlet.egg-info/PKG-INFO
writing dependency_links to greenlet.egg-info/dependency_links.txt
writing manifest file 'greenlet.egg-info/SOURCES.txt'
reading manifest file 'greenlet.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching 'tests/test_leaks.py'
writing manifest file 'greenlet.egg-info/SOURCES.txt'
running build_ext
Linking /private/var/folders/8w/n_txhbn945j9gxp6bz2nhkhr0000gn/T/nix-build-python3.4-greenlet-0.4.7.drv-0/greenlet-0.4.7/build/lib.macosx-10.6-x86_64-3.4/greenlet.so to /private/var/folders/8w/n_txhbn945j9gxp6bz2nhkhr0000gn/T/nix-build-python3.4-greenlet-0.4.7.drv-0/greenlet-0.4.7/greenlet.so
Traceback (most recent call last):
  File "setup.py", line 99, in <module>
    **setuptools_args)
  File "/nix/store/kih2pdc1vcc180pa28rk5gjr3spr6bq6-python3.4-distutils.cfg/lib/python3.4/site-packages/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/nix/store/kih2pdc1vcc180pa28rk5gjr3spr6bq6-python3.4-distutils.cfg/lib/python3.4/site-packages/distutils/dist.py", line 955, in run_commands
    self.run_command(cmd)
  File "/nix/store/kih2pdc1vcc180pa28rk5gjr3spr6bq6-python3.4-distutils.cfg/lib/python3.4/site-packages/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/nix/store/3189x7qqp6882cck4l6k5i0azz6cx6az-python3.4m-setuptools-18.2/lib/python3.4/site-packages/setuptools-18.2-py3.4.egg/setuptools/command/test.py", line 142, in run
    self.with_project_on_sys_path(self.run_tests)
  File "/nix/store/3189x7qqp6882cck4l6k5i0azz6cx6az-python3.4m-setuptools-18.2/lib/python3.4/site-packages/setuptools-18.2-py3.4.egg/setuptools/command/test.py", line 122, in with_project_on_sys_path
    func()
  File "/nix/store/3189x7qqp6882cck4l6k5i0azz6cx6az-python3.4m-setuptools-18.2/lib/python3.4/site-packages/setuptools-18.2-py3.4.egg/setuptools/command/test.py", line 163, in run_tests
    testRunner=self._resolve_as_ep(self.test_runner),
  File "/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib/python3.4/unittest/main.py", line 92, in __init__
    self.parseArgs(argv)
  File "/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib/python3.4/unittest/main.py", line 139, in parseArgs
    self.createTests()
  File "/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib/python3.4/unittest/main.py", line 146, in createTests
    self.module)
  File "/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib/python3.4/unittest/loader.py", line 146, in loadTestsFromNames
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib/python3.4/unittest/loader.py", line 146, in <listcomp>
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib/python3.4/unittest/loader.py", line 131, in loadTestsFromName
    test = obj()
  File "/private/var/folders/8w/n_txhbn945j9gxp6bz2nhkhr0000gn/T/nix-build-python3.4-greenlet-0.4.7.drv-0/greenlet-0.4.7/tests/__init__.py", line 34, in test_collector
    return unittest.TestLoader().loadTestsFromNames(test_module_list)
  File "/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib/python3.4/unittest/loader.py", line 146, in loadTestsFromNames
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib/python3.4/unittest/loader.py", line 146, in <listcomp>
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/nix/store/771g69sp9k5ai8rwlr1yqgnxx1dxgmdn-python3-3.4.3/lib/python3.4/unittest/loader.py", line 114, in loadTestsFromName
    parent, obj = obj, getattr(obj, part)
AttributeError: 'module' object has no attribute 'test_cpp'
builder for ‘/nix/store/hmvlv4q2wkqdrx3ky1lij0bscqkdj4h0-python3.4-greenlet-0.4.7.drv’ failed with exit code 1
building path(s) ‘/nix/store/4hkgmyxf78wx895xwcss8xlkfwyx0sqc-python2.7-neovim-0.0.38’
cannot build derivation ‘/nix/store/wkgli65m2gx1ldh457grf9a2c4dsf327-python3-3.4.3-env.drv’: 1 dependencies couldn't be built
killing process 47392