python - 强制setuptools使用dependency_links来安装mysqlclient

Question

我使用的是 Windows，我需要安装 here 中的 WHL 文件。这是我在 setup.py 中的内容:

install_requires=['mysqlclient==1.3.7',
...
dependency_links=['https://pypi.python.org/packages/cp27/m/mysqlclient/mysqlclient-1.3.7-cp27-none-win32.whl#md5=e9e726fd6f1912af78e2bf6ab56c02f3',]

但是，setuptools 正在下载 tar.gz 文件并尝试构建，这在我的系统上不起作用。我关注了this solution并改变了我的install_requires使用mysqlclient<=1.3.7 ，但我仍然遇到同样的问题。这是输出:

Searching for mysqlclient<=1.3.7
Reading https://pypi.python.org/packages/cp27/P/Pillow/Pillow-2.7.0-cp27-none-win32.whl#md5=ebc4ef88a8dd39ed484206323a8d557a
Reading https://pypi.python.org/packages/cp27/m/mysqlclient/mysqlclient-1.3.7-cp27-none-win32.whl#md5=e9e726fd6f1912af78e2bf6ab56c02f3
Reading http://pypi.python.org/simple/mysqlclient/
Best match: mysqlclient 1.3.7
Downloading https://pypi.python.org/packages/source/m/mysqlclient/mysqlclient-1.3.7.tar.gz#md5=2ec5a96cbd9fd6ef343fa9b581a67fc4
Processing mysqlclient-1.3.7.tar.gz
Running mysqlclient-1.3.7\setup.py -q bdist_egg --dist-dir c:\users\uuu\appdata\local\temp\easy_install-wt7fkw\mysqlclient-1.3.7\egg-dist-tmp-ubrs4f
error: Setup script exited with error: Unable to find vcvarsall.bat

使用 dependency_links 中的链接安装 Pillow 没有任何问题。有没有办法强制 setup.py 使用依赖链接？

Answer 1

我最终手动安装了该软件包作为安装后的一部分:

from setuptools.command.install import install as _install
import pip

class install(_install):
  def run(self):
    _install.do_egg_install(self)

    # Even when dependeny link to mysqlclient is specified, setuptools still installs
    # from pypi, which does not work on Windows.  Therefore, manually install mysqlclient
    if os.name == 'nt':
      pip.main(['install', 'https://pypi.python.org/packages/cp27/m/mysqlclient/mysqlclient-1.3.7-cp27-none-win32.whl#md5=e9e726fd6f1912af78e2bf6ab56c02f3'])
    else:
      pip.main(['install', 'mysqlclient==1.3.7'])

setup(
      cmdclass={'install': install},
...
)

有other answers调用 _install.run()，但这对我不起作用。我必须使用do_egg_install()。