Anaconda中Spyder 3.2.4无法更新求助：Navigator及conda命令均失效

Hey there, let's work through this Spyder update problem you're facing. The "Package is not installed in prefix" error and greyed-out update option in Anaconda Navigator almost always stem from Spyder being installed in a different conda environment than the one you're currently interacting with. Here's how to resolve it step by step:

Step 1: Find which conda environment has Spyder installed #

First, let's list all your conda environments to pinpoint where Spyder lives:

conda info --envs

You'll see output like this (the * marks your currently active environment):

# conda environments:
#
base                  *  /Users/steve/anaconda3
my_project_env           /Users/steve/anaconda3/envs/my_project_env

Next, check each environment for Spyder. Activate an environment, then list its installed packages to look for Spyder:

# Replace <env-name> with an environment name from the list (e.g., base)
conda activate <env-name>

# Check if Spyder is installed here
conda list spyder

Repeat this for every environment until you find the one with Spyder 3.2.4 listed.

Step 2: Update Spyder in the correct environment #

Once you've activated the environment with Spyder installed, run the update command again:

conda update spyder

If this fails to find available updates (common with the default conda channel), try using the conda-forge channel (which typically has newer, more up-to-date packages):

conda update spyder -c conda-forge

Alternatively, you can install a specific stable version of Spyder directly:

conda install spyder=5.4.3 -c conda-forge

(5.4.3 is a recent stable release; feel free to replace it with the latest version number if you prefer)

Step 3: Fix the greyed-out update option in Anaconda Navigator #

Open Anaconda Navigator and do the following:

• Navigate to the Home tab
• Use the dropdown menu in the top-right corner to switch to the environment where you just updated Spyder
• The Spyder update option should now be clickable (if an update is available for that environment)

Step 4: If all else fails, reinstall Spyder #

If updating still doesn't work, completely remove and reinstall Spyder in the correct environment:

# Activate the environment with Spyder
conda activate <env-name>

# Uninstall Spyder entirely
conda remove --all spyder

# Reinstall Spyder (using conda-forge for the latest build)
conda install spyder -c conda-forge

Quick explanation of the issue #

The "Package is not installed in prefix" error means your active conda environment doesn't have Spyder installed, so conda can't find it to update. The greyed-out Navigator option is the same problem—Navigator is checking a different environment where Spyder either isn't present or isn't eligible for an update.

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