conda 安装时Segmentation fault 的解决办法

1. 背景

有时候，使用conda安装包的时候，时不时会报：

Segmentation fault (core dumped)

很多时候出现这种情况，是因为之前安装包只下载了一半，然后本地进行离线安装，具体的离线安装参考：anaconda 离线安装大包

这个时候需要将包先清理掉，用到conda clean命令。

2. conda clean主要参数

$ conda clean -H
usage: conda clean [-h] [-a] [-i] [-l] [-p] [-t] [-f]
                   [-c TEMPFILES [TEMPFILES ...]] [-d] [--json] [-q] [-v] [-y]

Remove unused packages and caches.

Options:

optional arguments:
  -h, --help            Show this help message and exit.

Removal Targets:
  -a, --all             Remove index cache, lock files, unused cache packages,
                        and tarballs.
  -i, --index-cache     Remove index cache.
  -l, --lock            Remove all conda lock files.
  -p, --packages        Remove unused packages from writable package caches.
                        WARNING: This does not check for packages installed
                        using symlinks back to the package cache.
  -t, --tarballs        Remove cached package tarballs.
  -f, --force-pkgs-dirs
                        Remove *all* writable package caches. This option is
                        not included with the --all flag. WARNING: This will
                        break environments with packages installed using
                        symlinks back to the package cache.
  -c TEMPFILES [TEMPFILES ...], --tempfiles TEMPFILES [TEMPFILES ...]
                        Remove temporary files that could not be deleted
                        earlier due to being in-use. Argument is path(s) to
                        prefix(es) where files should be found and removed.

Output, Prompt, and Flow Control Options:
  -d, --dry-run         Only display what would have been done.
  --json                Report all output as json. Suitable for using conda
                        programmatically.
  -q, --quiet           Do not display progress bar.
  -v, --verbose         Can be used multiple times. Once for INFO, twice for
                        DEBUG, three times for TRACE.
  -y, --yes             Do not ask for confirmation.

Examples:

    conda clean –tarballs

常用命令：

• 删除从不使用的包
  

  $ conda clean --packages

• 删除tar包
  

  $ conda clean --tarballs

• 删除索引缓存、锁定文件、未使用过的包和tar包
  

  $ conda clean –a

为了解决Segmentation fault 的问题，使用-a参数，清理掉所有缓存、锁定文件和未使用过的包。

然后重新安装。

3. 参考

Conda clean 净化Anaconda

（完）