尝试 conda 构建 graphviz pypi 包时出现 HTTP 错误

如何解决尝试 conda 构建 graphviz pypi 包时出现 HTTP 错误

我正在尝试从 pypi conda 构建一个 graphviz 包，但我遇到了：

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent,and a simple retry will get you on your way.
Could not download https://pypi.io/packages/source/g/graphviz/graphviz-0.16.tar.gz

这是我正在做的：

conda skeleton pypi graphviz 成功创建骨架。输出：

Using 0.16
Use --version to specify a different version.
Using url https://files.pythonhosted.org/packages/cc/a3/8f49063fee2037892f66f1a4d55da8ba25235e76dc27887f7edf95272154/graphviz-0.16.zip (189 KB) for graphviz.
Downloading graphviz
PyPI URL:  https://files.pythonhosted.org/packages/cc/a3/8f49063fee2037892f66f1a4d55da8ba25235e76dc27887f7edf95272154/graphviz-0.16.zip
Using cached download
Unpacking graphviz...
done
working in /tmp/tmpl8v3p0e8conda_skeleton_graphviz-0.16.zip
Collecting package Metadata (repodata.json): ...working... done
Solving environment: ...working... done

## Package Plan ##

  environment location: /home/nitin/miniconda3/envs/jupyter/conda-bld/skeleton_1619126219886/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold


The following NEW packages will be INSTALLED:

    _libgcc_mutex:    0.1-main                
    ca-certificates:  2021.4.13-h06a4308_1    
    certifi:          2020.12.5-py39h06a4308_0
    ld_impl_linux-64: 2.33.1-h53a641e_7       
    libffi:           3.3-he6710b0_2          
    libgcc-ng:        9.1.0-hdf63c60_0        
    libstdcxx-ng:     9.1.0-hdf63c60_0        
    ncurses:          6.2-he6710b0_1          
    openssl:          1.1.1k-h27cfd23_0       
    patch:            2.7.6-h7b6447c_1001     
    pip:              21.0.1-py39h06a4308_0   
    python:           3.9.4-hdb3f193_0        
    pyyaml:           5.4.1-py39h27cfd23_1    
    readline:         8.1-h27cfd23_0          
    setuptools:       52.0.0-py39h06a4308_0   
    sqlite:           3.35.4-hdfb4753_0       
    tk:               8.6.10-hbc83047_0       
    tzdata:           2020f-h52ac0ba_0        
    wheel:            0.36.2-pyhd3eb1b0_0     
    xz:               5.2.5-h7b6447c_0        
    yaml:             0.2.5-h7b6447c_0        
    zlib:             1.2.11-h7b6447c_3       

Preparing transaction: ...working... done
Verifying transaction: ...working... done
Executing transaction: ...working... done
Applying patch: /tmp/tmpl8v3p0e8conda_skeleton_graphviz-0.16.zip/pypi-distutils.patch
Applying patch: /tmp/tmpl8v3p0e8conda_skeleton_graphviz-0.16.zip/pypi-distutils.patch with args:
['-Np0','-i','/tmp/tmp2v4dskk_/pypi-distutils.patch.native','--binary']
checking file core.py
Hunk #1 succeeded at 167 with fuzz 2 (offset 1 line).
patching file core.py
Hunk #1 succeeded at 167 with fuzz 2 (offset 1 line).
Writing recipe for graphviz
--dirty flag and --keep-old-work not specified. Removing build/test folder after successful build/test.

INFO:conda_build.config:--dirty flag and --keep-old-work not specified. Removing build/test folder after successful build/test.

INFO conda_build.config:__exit__(855): --dirty flag and --keep-old-work not specified. Removing build/test folder after successful build/test.

现在我跑了 conda-build graphviz。输出（和错误）：

No numpy version specified in conda_build_config.yaml.  Falling back to default numpy value of 1.16
WARNING:conda_build.Metadata:No numpy version specified in conda_build_config.yaml.  Falling back to default numpy value of 1.16
Adding in variants from internal_defaults
INFO:conda_build.variants:Adding in variants from internal_defaults
Attempting to finalize Metadata for graphviz
INFO:conda_build.Metadata:Attempting to finalize Metadata for graphviz
Collecting package Metadata (repodata.json): ...working... done
Solving environment: ...working... done
Collecting package Metadata (repodata.json): ...working... done
Solving environment: ...working... done
BUILD START: ['graphviz-0.16-py39_0.tar.bz2']
Collecting package Metadata (repodata.json): ...working... done
Solving environment: ...working... done

## Package Plan ##

  environment location: /home/nitin/miniconda3/envs/jupyter/conda-bld/graphviz_1619126315280/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold


The following NEW packages will be INSTALLED:

    _libgcc_mutex:    0.1-main                
    ca-certificates:  2021.4.13-h06a4308_1    
    certifi:          2020.12.5-py39h06a4308_0
    ld_impl_linux-64: 2.33.1-h53a641e_7       
    libffi:           3.3-he6710b0_2          
    libgcc-ng:        9.1.0-hdf63c60_0        
    libstdcxx-ng:     9.1.0-hdf63c60_0        
    ncurses:          6.2-he6710b0_1          
    openssl:          1.1.1k-h27cfd23_0       
    pip:              21.0.1-py39h06a4308_0   
    python:           3.9.4-hdb3f193_0        
    readline:         8.1-h27cfd23_0          
    setuptools:       52.0.0-py39h06a4308_0   
    sqlite:           3.35.4-hdfb4753_0       
    tk:               8.6.10-hbc83047_0       
    tzdata:           2020f-h52ac0ba_0        
    wheel:            0.36.2-pyhd3eb1b0_0     
    xz:               5.2.5-h7b6447c_0        
    zlib:             1.2.11-h7b6447c_3       

Preparing transaction: ...working... done
Verifying transaction: ...working... done
Executing transaction: ...working... done
Collecting package Metadata (repodata.json): ...working... done
Solving environment: ...working... done
Source cache directory is: /home/nitin/miniconda3/envs/jupyter/conda-bld/src_cache
INFO:conda_build.source:Source cache directory is: /home/nitin/miniconda3/envs/jupyter/conda-bld/src_cache
INFO conda_build.source:download_to_cache(44): Source cache directory is: /home/nitin/miniconda3/envs/jupyter/conda-bld/src_cache
Downloading source to cache: graphviz-0.16_d2d25af1c1.tar.gz
INFO:conda_build.source:Downloading source to cache: graphviz-0.16_d2d25af1c1.tar.gz
INFO conda_build.source:download_to_cache(69): Downloading source to cache: graphviz-0.16_d2d25af1c1.tar.gz
Downloading https://pypi.io/packages/source/g/graphviz/graphviz-0.16.tar.gz
INFO:conda_build.source:Downloading https://pypi.io/packages/source/g/graphviz/graphviz-0.16.tar.gz
INFO conda_build.source:download_to_cache(83): Downloading https://pypi.io/packages/source/g/graphviz/graphviz-0.16.tar.gz
Error: HTTP 404 NOT FOUND for url <https://pypi.io/packages/source/g/graphviz/graphviz-0.16.tar.gz>
Elapsed: 00:01.276866

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent,and a simple retry will get you on your way.
WARNING:conda_build.source:Error: HTTP 404 NOT FOUND for url <https://pypi.io/packages/source/g/graphviz/graphviz-0.16.tar.gz>
Elapsed: 00:01.276866

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent,and a simple retry will get you on your way.
WARNING conda_build.source:download_to_cache(87): Error: HTTP 404 NOT FOUND for url <https://pypi.io/packages/source/g/graphviz/graphviz-0.16.tar.gz>
Elapsed: 00:01.276866

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent,and a simple retry will get you on your way.
Could not download https://pypi.io/packages/source/g/graphviz/graphviz-0.16.tar.gz

到目前为止我尝试过的：

尝试了 conda config --set ssl_verify no 和 conda config --set ssl_verify False - 问题仍然存在
尝试多次运行 conda-build graphviz 命令 - 问题仍然存在

能否请您解释一下我哪里出错了，错误的根源是什么，以及解决方法是什么？

尝试 conda 构建 graphviz pypi 包时出现 HTTP 错误

如何解决尝试 conda 构建 graphviz pypi 包时出现 HTTP 错误

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