Add more helpful error on misconfigured conda env. Closes #1897

[brollb]

Perhaps this is too much help info? I think it should be all useful but would be open to thoughts/comments...

[umesh-timalsina]

The issue might also arise when using source activate conda-env from a custom conda environment. It might be helpful to include it in the message. But, Probably the root of the issue is mentioned here:
https://github.com/deepforge-dev/deepforge/pull/1989/files#diff-5414311e553828ce21bcebd3ff16794abb26a2360ebae744f194ae2da308550dR284

[brollb]

It actually seems to be working for me from within a custom conda environment (after I update my PATH). Are you able to reproduce the failure when within a custom conda environment? Just to make sure I am not missing anything, I am running:

source activate deepforge
source activate deepforge-server

[umesh-timalsina]

No, bin directory of conda is in the PATH(Which has the activate command) when you are in your base environment:


But when you are in a custom environment, the environment's bin directory gets added and the old bin is removed. So, I think it might be a bit confusing for just to add bin to your PATH because it might override the conda configuration and bin directories.

[umesh-timalsina]

An alternative could be to find the location of the conda bin directory when starting the server.

[brollb]

I am a little puzzled. In my earlier example, I was running the second command (source activate deepforge-server) within the deepforge conda environment without error. Is there a way that I can reproduce the error from a custom conda environment?

[brollb]

The old one actually isn't removed for me:

Any idea which is the standard behavior?

[umesh-timalsina]

Its not an error. I am bit weary about adding a directory to the PATH that would be managed/changed by conda.

[brollb]

I would like to avoid trying to automatically fix the issue. It would probably get a bit hairy (across different OS'es and conda implmentations/versions) and I would rather spend our development time on more important things.