当我创建这样一个新环境:conda create -n nb python=3.7 jupyter
时,它失败了
控制台告诉我:
Collecting package metadata (current_repodata.json): done
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: /
Found conflicts! Looking for incompatible packages.
This can take several minutes. Press CTRL-C to abort.-
Examining jupyter: 100%|████████████████████████████████████████████████failed
UnsatisfiableError: The following specifications were found to be incompatible with each other:
Output in format: Requested package -> Available versions
Package python conflicts for:
python=3.7
jupyter -> python[version='2.7.*|3.4.*|3.5.*|3.6.*|>=2.7,<2.8.0a0|>=3.5,<3.6.0a0|>=3.8,<3.9.0a0|>=3.6,<3.7.0a0|>=3.7,<3.8.0a0']
jupyter -> ipywidgets -> python[version='>=3.5']
所以我去了基本环境检查安装的软件包的版本(base) D:\>conda list
python版本是3.7.4,jupyter版本是1.0.0。所以我又试了一次conda create -n nb python=3.7.3 jupyter=1.0.0
然而,它仍然无法发挥作用。我很困惑。为什么
这里是conda info
active environment : base
active env location : C:\ProgramData\Anaconda3
shell level : 1
user config file : C:\Users\Administrator\.condarc
populated config files : C:\Users\Administrator\.condarc
conda version : 4.8.2
conda-build version : 3.18.9
python version : 3.7.4.final.0
virtual packages :
base environment : C:\ProgramData\Anaconda3 (writable)
channel URLs : https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/win-64
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/noarch
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/noarch
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r/win-64
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r/noarch
package cache : C:\ProgramData\Anaconda3\pkgs
C:\Users\Administrator\.conda\pkgs
C:\Users\Administrator\AppData\Local\conda\conda\pkgs
envs directories : C:\ProgramData\Anaconda3\envs
C:\Users\Administrator\.conda\envs
C:\Users\Administrator\AppData\Local\conda\conda\envs
platform : win-64
user-agent : conda/4.8.2 requests/2.22.0 CPython/3.7.4 Windows/10 Windows/10.0.18362
administrator : True
netrc file : None
offline mode : False
我在谷歌上搜索过,但似乎没有人像我一样有这个问题。为什么这会发生在我身上
求你了,我需要帮助
多亏@merv,在他的帮助下,我找到了清华水蟒镜中的问题。我已经向他们报告了这件事。他们在MacOS中使用
CONDA_SUBDIR="win-64"
命令来重现这一点问题页面: https://github.com/tuna/issues/issues/701
进一步调查表明,根本原因是
.condarc
文件的default_channels:
中缺少/pkgs/msys2
通道,这导致未找到包m2w64-gcc-libs
,然后可能会混淆conda依赖项解析程序我认为这一发现将有助于遇到类似奇怪的依赖冲突的人
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