在我的一个基于setuptools的Python项目中，我想向numpy-stl添加一个依赖项。该包在PyPI上，取决于numpy。由于a bug，在某些情况下，setuptools无法在其名称中安装包含破折号的软件包。
这是一个最小的setup.py，可以重现问题：
import setuptools
setuptools.setup(
install_requires=['numpy-stl'])
运行python setup.py develop会产生以下输出：
running install
running bdist_egg
running egg_info
writing UNKNOWN.egg-info/PKG-INFO
writing top-level names to UNKNOWN.egg-info/top_level.txt
writing dependency_links to UNKNOWN.egg-info/dependency_links.txt
writing requirements to UNKNOWN.egg-info/requires.txt
reading manifest file 'UNKNOWN.egg-info/SOURCES.txt'
writing manifest file 'UNKNOWN.egg-info/SOURCES.txt'
installing library code to build/bdist.macosx-10.9-x86_64/egg
running install_lib
warning: install_lib: 'build/lib' does not exist -- no Python modules to install
creating build/bdist.macosx-10.9-x86_64/egg
creating build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying UNKNOWN.egg-info/PKG-INFO -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying UNKNOWN.egg-info/SOURCES.txt -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying UNKNOWN.egg-info/dependency_links.txt -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying UNKNOWN.egg-info/requires.txt -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying UNKNOWN.egg-info/top_level.txt -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
zip_safe flag not set; analyzing archive contents...
creating 'dist/UNKNOWN-0.0.0-py3.5.egg' and adding 'build/bdist.macosx-10.9-x86_64/egg' to it
removing 'build/bdist.macosx-10.9-x86_64/egg' (and everything under it)
Processing UNKNOWN-0.0.0-py3.5.egg
Copying UNKNOWN-0.0.0-py3.5.egg to /Users/michi/Desktop/STL_Plot/stl_plot/venv/lib/python3.5/site-packages
Adding UNKNOWN 0.0.0 to easy-install.pth file
Installed /Users/michi/Desktop/STL_Plot/stl_plot/venv/lib/python3.5/site-packages/UNKNOWN-0.0.0-py3.5.egg
Processing dependencies for UNKNOWN==0.0.0
Searching for numpy-stl
Reading https://pypi.python.org/simple/numpy-stl/
[... installing numpy-stl and some of its dependencies ...]
Installed /Users/michi/Desktop/STL_Plot/stl_plot/venv/lib/python3.5/site-packages/nine-0.3.4-py3.5.egg
Searching for numpy
Best match: numpy stl-1.7.1
Downloading https://pypi.python.org/packages/source/n/numpy-stl/numpy-stl-1.7.1.tar.gz#md5=fa3a9324418b72a6827f266671198fe1
Processing numpy-stl-1.7.1.tar.gz
Writing /var/folders/r3/lpx2z49s5hs8mmh3vzrgxd9c0000gs/T/easy_install-yvi_spnk/numpy-stl-1.7.1/setup.cfg
Running numpy-stl-1.7.1/setup.py -q bdist_egg --dist-dir /var/folders/r3/lpx2z49s5hs8mmh3vzrgxd9c0000gs/T/easy_install-yvi_spnk/numpy-stl-1.7.1/egg-dist-tmp-72gff1lq
File "build/bdist.macosx-10.9-x86_64/egg/stl2/stl.py", line 41
except RuntimeError, (recoverable, e):
^
SyntaxError: invalid syntax
zip_safe flag not set; analyzing archive contents...
tests.__pycache__.test_convert.cpython-35: module references __file__
removing '/Users/michi/Desktop/STL_Plot/stl_plot/venv/lib/python3.5/site-packages/numpy_stl-1.7.1-py3.5.egg' (and everything under it)
creating /Users/michi/Desktop/STL_Plot/stl_plot/venv/lib/python3.5/site-packages/numpy_stl-1.7.1-py3.5.egg
Extracting numpy_stl-1.7.1-py3.5.egg to /Users/michi/Desktop/STL_Plot/stl_plot/venv/lib/python3.5/site-packages
File "/Users/michi/Desktop/STL_Plot/stl_plot/venv/lib/python3.5/site-packages/numpy_stl-1.7.1-py3.5.egg/stl2/stl.py", line 41
except RuntimeError, (recoverable, e):
^
SyntaxError: invalid syntax
numpy-stl 1.7.1 is already the active version in easy-install.pth
Installing stl2ascii script to /Users/michi/Desktop/STL_Plot/stl_plot/venv/bin
Installing stl2bin script to /Users/michi/Desktop/STL_Plot/stl_plot/venv/bin
Installing stl script to /Users/michi/Desktop/STL_Plot/stl_plot/venv/bin
Installed /Users/michi/Desktop/STL_Plot/stl_plot/venv/lib/python3.5/site-packages/numpy_stl-1.7.1-py3.5.egg
error: The 'numpy' distribution was not found and is required by numpy-stl
(venv)michi ~/.../STL_Plot/stl_plot$
安装nine后，setuptools会尝试查找numpy发布内容并查找numpy-stl，并在版本numpy中认为其为stl，并安装{{ 1}}再次。最后，它检测到numpy-stl仍未安装并放弃。
这是否就是这样，setuptools项目不能依赖于名称中包含短划线的包，这大约是PyPI上1/4的包？或者是否有一个允许setuptools安装此类依赖项的解决方法？