无法安装Kivy（windows 10、python 3.8）

在我的系统上安装kivy时遇到了很多麻烦。我以前做过这项工作，但由于某种原因，我现在非常困难。 我一字不差地按照指示操作，设置virtualenv，激活env，安装依赖项（docutils、pygments、pypiwin32、kivy_deps.sdl2==0.1*、kivy_deps.glew==0.1*、kivy_deps.gstreamer==0.1*）

以上所有部分都很好。当我最终安装kivy（py-m pip install kivy）时，我遇到了一系列错误：

ERROR: Command errored out with exit status 1:
     command: 'C:\Users\ferna\Documents\Python\pyenv3864\Scripts\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\ferna\\AppData\\Local\\Temp\\pip-install-ctrp6hf9\\kivy\\setup.py'"'"'; __file__='"'"'C:\\Users\\ferna\\AppData\\Local\\Temp\\pip-install-ctrp6hf9\\kivy\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info 
--egg-base 'C:\Users\ferna\AppData\Local\Temp\pip-install-ctrp6hf9\kivy\pip-egg-info'
         cwd: C:\Users\ferna\AppData\Local\Temp\pip-install-ctrp6hf9\kivy\
    Complete output (79 lines):
     Traceback (most recent call last):
       File "<string>", line 1, in <module>
       File "C:\Users\ferna\AppData\Local\Temp\pip-install-ctrp6hf9\kivy\setup.py", line 1073, in <module>
         setup(
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\__init__.py", line 144, in setup
         _install_setup_requires(attrs)
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\__init__.py", line 139, in _install_setup_requires    
         dist.fetch_build_eggs(dist.setup_requires)
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\dist.py", line 716, in fetch_build_eggs
         resolved_dists = pkg_resources.working_set.resolve(
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\pkg_resources\__init__.py", line 780, in resolve
         dist = best[req.key] = env.best_match(
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\pkg_resources\__init__.py", line 1065, in best_match
         return self.obtain(req, installer)
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\pkg_resources\__init__.py", line 1077, in obtain
         return installer(requirement)
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\dist.py", line 786, in fetch_build_egg
         return cmd.easy_install(req)
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\command\easy_install.py", line 665, in easy_install   
         dist = self.package_index.fetch_distribution(
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\package_index.py", line 655, in fetch_distribution    
         dist = find(requirement)
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\package_index.py", line 635, in find
         loc = self.download(dist.location, tmpdir)
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\package_index.py", line 579, in download
         found = self._download_url(scheme.group(1), spec, tmpdir)   
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\package_index.py", line 824, in _download_url
         return self._attempt_download(url, filename)
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\package_index.py", line 830, in _attempt_download     
         headers = self._download_to(url, filename)
       File "C:\Users\ferna\Documents\Python\pyenv3864\lib\site-packages\setuptools\package_index.py", line 745, in _download_to
         block = fp.read(bs)
       File "C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\http\client.py", line 454, in read
         n = self.readinto(b)
       File "C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\http\client.py", line 498, in readinto
         n = self.fp.readinto(b)
       File "C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\socket.py", line 669, in readinto
         return self._sock.recv_into(b)
       File "C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\ssl.py", line 1241, in recv_into
         return self.read(nbytes, buffer)
       File "C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\ssl.py", line 1099, in read
         return self._sslobj.read(len, buffer)
     socket.timeout: The read operation timed out
    Using setuptools
    User distribution detected, avoid portable command.
    Using this graphics system: OpenGL
    WARNING: A problem occurred while running pkg-config --libs --cflags gstreamer-1.0 (code 1)

    b"'pkg-config' is not recognized as an internal or external command,\r\noperable program or batch file.\r\n"

    WARNING: A problem occurred while running pkg-config --libs --cflags gstreamer-1.0 (code 1)

    b"'pkg-config' is not recognized as an internal or external command,\r\noperable program or batch file.\r\n"

    WARNING: A problem occurred while running pkg-config --libs --cflags sdl2 SDL2_ttf SDL2_image SDL2_mixer (code 1)

    b"'pkg-config' is not recognized as an internal or external command,\r\noperable program or batch file.\r\n"

    ERROR: Dependency for context.pyx not resolved: config.pxi       
    ERROR: Dependency for compiler.pyx not resolved: config.pxi      
    ERROR: Dependency for context_instructions.pyx not resolved: config.pxi
    ERROR: Dependency for fbo.pyx not resolved: config.pxi
    ERROR: Dependency for gl_instructions.pyx not resolved: config.pxi
    ERROR: Dependency for instructions.pyx not resolved: config.pxi  
    ERROR: Dependency for opengl.pyx not resolved: config.pxi        
    ERROR: Dependency for opengl_utils.pyx not resolved: config.pxi  
    ERROR: Dependency for shader.pyx not resolved: config.pxi        
    ERROR: Dependency for stencil_instructions.pyx not resolved: config.pxi
    ERROR: Dependency for scissor_instructions.pyx not resolved: conf    ERROR: Dependency for vertex_instructions.pyx not resolved: config.pxi                                              xi       
    ERROR: Dependency for cgl.pyx not resolved: config.pxi  
    ERROR: Dependency for cgl_mock.pyx not resolved: config.i        pxi                                                         ed: config.pxi
    ERROR: Dependency for cgl_gl.pyx not resolved: config.pxi
    ERROR: Dependency for cgl_glew.pyx not resolved: config.pxi      pxi                                                         i        
    ERROR: Dependency for cgl_sdl2.pyx not resolved: config.pxi      pxi                                                         pxi      
    ERROR: Dependency for svg.pyx not resolved: config.pxi  
    ----------------------------------------                         fo Check the logs for full command output.
ERROR: Command errored out with exit status 1: python setup.py egg_inpy egg_info Check the logs for full command output.

错误：命令出错，退出状态为1:
命令：“C:\Users\ferna\Documents\Python\pyenv3864\Scripts\Python.exe'-C”import sys，setuptools，tokenize；sys.argv[0]=“C:\\Users\\ferna\\AppData\\Local\\Temp\\pip-install-ctrp6hf9\\kivy\\setup.py”“”__文件“''''C:\\Users\\ferna\\AppData\\Local\\Temp\\pip-install-ctrp6hf9\\kivy\\setup.py''”；f=getattr（标记化，“'open'”，open）（\uuuuu文件）；code=f.read（）.replace（“\r\n”“”、“\n”“”）；f、 close（）；exec（编译（代码，文件），exec），egg信息
--蛋库'C:\Users\ferna\AppData\Local\Temp\pip-install-ctrp6hf9\kivy\pip蛋信息'
cwd:C:\Users\ferna\AppData\Local\Temp\pip-install-ctrp6hf9\kivy\
完整输出（79行）：
回溯（最近一次呼叫最后一次）：
文件“”，第1行，在
文件“C:\Users\ferna\AppData\Local\Temp\pip-install-ctrp6hf9\kivy\setup.py”，第1073行，在
设置(
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\ \uuuu init\uuuu.py”，第144行，在安装程序中
_安装\u安装\u需要（属性）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\\ uuuuu init\uuuuuu.py”，第139行，在安装程序中
dist.fetch\u build\u鸡蛋（dist.setup\u需要）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\dist.py”，第716行，在fetch\u build\u中
resolved_dists=pkg_resources.working_set.resolve(
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\pkg\u resources\uuuuu init\uuuu.py”，第780行，解析
dist=best[req.key]=env.best\u匹配(
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\pkg\u resources\uuuuu init\uuuu.py”，第1065行，最佳匹配
返回自获取（请求，安装程序）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\pkg\u resources\uuuuu init\uuuu.py”，第1077行，在获取中
返回安装程序（要求）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\dist.py”，第786行，在fetch\u build\u egg中
return cmd.easy_安装（需要）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\command\easy\u install.py”，第665行，在easy\u install中
dist=self.package\u index.fetch\u分布(
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\package\u index.py”，第655行，在fetch\u发行版中
dist=查找（需求）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\package\u index.py”，第635行，在find中
loc=自下载（距离位置，tmpdir）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\package\u index.py”，第579行，下载
found=self.\u下载\u url（scheme.group（1）、spec、tmpdir）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\package\u index.py”，第824行，位于下载url中
返回self.\u尝试\u下载（url，文件名）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\package\u index.py”，第830行，下载
headers=self.\u下载到（url，文件名）
文件“C:\Users\ferna\Documents\Python\pyenv3864\lib\site packages\setuptools\package\u index.py”，第745行，下载到
block=fp.read（bs）
文件“C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\http\client.py”，第454行，已读
n=自读入（b）
文件“C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\http\client.py”，第498行，在readinto中
n=自fp读入（b）
文件“C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\socket.py”，第669行，在readinto中
返回自我。将袜子重新放入（b）
文件“C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\ssl.py”，第1241行，在recv\u中
返回自读（N字节，缓冲区）
文件“C:\Users\ferna\AppData\Local\Programs\Python\Python38\lib\ssl.py”，第1099行，已读
返回self.\u sslobj.read（len，buffer）
socket.timeout:读取操作超时
使用设置工具
检测到用户分布，请避免使用便携命令。
使用这个图形系统：OpenGL
警告：运行pkg config--libs--cflags gstreamer-1.0（代码1）时出现问题
b“'pkg-config'未被识别为内部或外部命令，\r\n不可操作的程序或批处理文件。\r\n”
警告：运行pkg config--libs--cflags gstreamer-1.0（代码1）时出现问题
b“'pkg-config'未被识别为内部或外部命令，\r\n不可操作的程序或批处理文件。\r\n”
警告：运行pkg config--libs--cflags sdl2 sdl2_ttf sdl2_image sdl2_mixer时出现问题（代码1）
b“'pkg-config'未被识别为内部或外部命令，\r\n不可操作的程序或批处理文件。\r\n”
错误：未解析context.pyx的依赖项：config.pxi
错误：未解析compiler.pyx的依赖项：config.pxi
错误：未解析context_instructions.pyx的依赖关系：config.pxi
错误：未解析fbo.pyx的依赖项：config.pxi
错误：未解析gl_instructions.pyx的依赖关系：config.pxi
错误：未解析instructions.pyx的依赖关系：config.pxi
错误：未解析opengl.pyx的依赖项：config.pxi
错误：opengl_utils.pyx的依赖项不是reso