resetting conda channel priorities

Question

I am having issues with conda. After running commands such as:

conda install -c /my_conda_channel numpy --offline --override-channels 

the default conda channel has now become 'my_conda_channel' so that each subsequent package from this channel supercedes the default channel, which is not what I want. I did the former just for testing purposes.

How do I reset the channel behaviour?

Answer 1

Change the order from ~/.condarc so that defaults the first channel as

channels:   - defaults   - conda-forge 

and add this line to it

channel_priority: true 

or run the following code in command-line

conda config --set channel_priority true 

then again run

conda update --all 

Good Luck

---

Edited for new versions of conda. According to conda doc

As of version 4.6.0, Conda has a strict channel priority feature. Strict channel priority can dramatically speed up conda operations and also reduce package incompatibility problems. We recommend it as a default. However, it may break old environment files, so we plan to delay making it conda's out-of-the-box default until the next major version bump, conda 5.0.

channel_priority (ChannelPriority) Accepts values of 'strict', 'flexible', and 'disabled'. 

It still accepts the old values true and false

1. true := flexible
2. false := disabled
3. strict := this is a new value

Answer 2

Another option would be to move your channel to the bottom of the priority list.
Run the command....

conda config --append channels my_conda_channel 

You should get a response like this...

Warning: 'my_conda_channel' already in 'channels' list, moving to the bottom 

Verify...

conda config --get channels 

Which should give you something like...

--add channels 'defaults'   # highest priority --add channels 'my_conda_channel'   # lowest priority