无法克隆conda与conda-env包？Anaconda环境克隆问题求助

Ah, I’ve dealt with this exact conda cloning issue before! The root problem here is that those conda and conda-env packages are core components of your base Anaconda environment—they’re not designed to be copied into virtual environments, since virtual environments rely on the base conda installation to manage them. Let’s walk through the fix step by step:

Step 1: Export Your Old Environment’s Package List #

First, export your existing environment’s configuration to a YAML file. This gives you control to exclude the problematic core packages.

• If your old environment has a name (e.g., oldenv), run:

  conda env export --name oldenv > environment.yml
  

• If you’re using a path-based environment, use:

  conda env export --prefix /path/to/oldenv > environment.yml
  

Step 2: Clean Up the YAML File #

Open the environment.yml file with your favorite text editor, then delete any lines that reference conda or conda-env. These will look something like:

• conda=4.3.30=py35hf9359ed_0
• conda-env=...

These are base environment-specific tools that your new virtual environment doesn’t need to function.

Step 3: Create the New Environment from the Cleaned YAML #

Now use the edited file to create your new environment (this acts as your "clone" without the problematic packages):

conda env create --prefix /path/to/newenv --file environment.yml

If you prefer a named environment instead of a path-based one, use:

conda env create --name newenv --file environment.yml

Step 4: Add Your Target Package & Verify #

Activate your new environment first:

conda activate /path/to/newenv
# Or for named environments: conda activate newenv

Then install the package you want to add:

conda install your-target-package-name

You can verify everything works by running conda list to check that all your original packages plus the new one are present.

Bonus: Rename the Original Environment (If Needed) #

If you want to replace the old environment with the new renamed version:

1. Double-check the new environment works as expected (don’t skip this step!)
2. Delete the old environment:

   conda env remove --name oldenv
   # Or for path-based environments: conda env remove --prefix /path/to/oldenv
   

3. (Optional) If you want the new environment to use the old name, just repeat the cloning process using the cleaned YAML or directly clone from the new environment.

内容的提问来源于stack exchange，提问作者danis9yearsago