Using the .condarc conda configuration file — conda dev documentation

修改默认 pkgs_dirs

conda 安装相关的包时，会将包缓存至 pkgs 文件夹中，避免重复的下载。

在多用户使用时候，由于权限问题，另一个用户创建的缓存文件不允许被修改。

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$ conda install --name openmmlab black -y
Collecting package metadata (current_repodata.json): failed

NotWritableError: The current user does not have write permissions to a required path.
  path: /usr/local/anaconda3/pkgs/cache/5827f1d9.json
  uid: 1001
  gid: 2001

If you feel that permissions on this path are set incorrectly, you can manually
change them by executing

  $ sudo chown 1001:2001 /usr/local/anaconda3/pkgs/cache/5827f1d9.json

In general, it's not advisable to use 'sudo conda'.

因此，可以修改 pkgs_dirs 的位置将缓存的 pkgs 保存至当前用户的个人文件夹下。通过 conda config --show 查看默认配置如下：

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pkgs_dirs:
  - /usr/local/anaconda3/pkgs
  - /home/{current_user}/.conda/pkgs

修改全局配置信息 sudo vim /etc/conda/.condarc，如下：

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pkgs_dirs:
  - $HOME/.conda/pkgs
  - /usr/local/anaconda3/pkgs

多用户配置 .condarc 搜索域

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if on_win:
    SEARCH_PATH = (
        "C:/ProgramData/conda/.condarc",
        "C:/ProgramData/conda/condarc",
        "C:/ProgramData/conda/condarc.d",
    )
else:
    SEARCH_PATH = (
        "/etc/conda/.condarc",
        "/etc/conda/condarc",
        "/etc/conda/condarc.d/",
        "/var/lib/conda/.condarc",
        "/var/lib/conda/condarc",
        "/var/lib/conda/condarc.d/",
    )

SEARCH_PATH += (
    "$CONDA_ROOT/.condarc",
    "$CONDA_ROOT/condarc",
    "$CONDA_ROOT/condarc.d/",
    "$XDG_CONFIG_HOME/conda/.condarc",
    "$XDG_CONFIG_HOME/conda/condarc",
    "$XDG_CONFIG_HOME/conda/condarc.d/",
    "~/.config/conda/.condarc",
    "~/.config/conda/condarc",
    "~/.config/conda/condarc.d/",
    "~/.conda/.condarc",
    "~/.conda/condarc",
    "~/.conda/condarc.d/",
    "~/.condarc",
    "$CONDA_PREFIX/.condarc",
    "$CONDA_PREFIX/condarc",
    "$CONDA_PREFIX/condarc.d/",
    "$CONDARC",
)