问题描述：

利用 conda 安装某包

conda install -c "nvidia/label/cuda-11.8.0" cuda-nvcc

时发现报错：

Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: \ 
Found conflicts! Looking for incompatible packages.                                    failed                                                                                     UnsatisfiableError: The following specifications were found to be incompatible with each other:Output in format: Requested package -> Available versionsThe following specifications were found to be incompatible

具体来说：
Found conflicts! Looking for incompatible packages.

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解决方案：

1. 博客【conda安装软件报兼容性问题的解决 Found conflicts! Looking for incompatible packages.failed.UnsatisfiableError】认为是镜像的问题，在报错的服务器添加国内镜像或者升级一些特定库。
2. 以上方法均对本人无效，经过排查发现，是因为之前删除 conda 环境时未删除干净，导致新建的该环境里依旧识别到原来同名环境里的库。采用 pip list 发现了很多尚未安装的库。解决方法是首先退出当前激活的虚拟环境，使用conda deactivate命令。然后，使用 conda remove -n your_env_name --all 命令来删除指定的虚拟环境。请将 your_env_name 替换为你要删除的虚拟环境的名称。--all 一定不能省略，否则卸载之后可能还会存在原环境的文件夹，导致用此名称再次新建环境时发生冲突。