I am unable to create the rmg environment in anaconda

[torstein-F]

Dear all,

I am trying to install RMG-Py following the instructions here: http://reactionmechanismgenerator.github.io/RMG-Py/users/rmg/installation/anacondaDeveloper.html I come to step 4 where the following commands are given:

cd RMG-Py
conda env create -f environment.yml

I have installed Anaconda and verified that it works. The content of the folder RMG-Py is the following:

arkane              documentation    external     Makefile          rmg.py   setup.py              utilities.py
Arkane.py           environment.yml  ipython      README.md         rmgpy    testing
CODE_OF_CONDUCT.md  examples         LICENSE.txt  requirements.txt  scripts  trigger-rmg-tests.sh

When I execute the command

conda env create -f environment.yml

The following output is produced:

Collecting package metadata (repodata.json): done
Solving environment: \ (base) torstein@torstein-VirtualBox:~/Programs/rmg/RMG-Py$ 

but the rmg environment is not created, as verified by the command conda info --envs:

# conda environments:
#
base                  *  /home/torstein/anaconda3
snakes                   /home/torstein/anaconda3/envs/snakes
snowflakes               /home/torstein/anaconda3/envs/snowflakes

Does anyone have any idea on how I can solve this issue? Thanks in advance for your help.

[mjohnson541]

That doesn't look like an issue on our end. That looks like something is terminating the process in the middle of solving the environment. Is your internet connection stable?

[torstein-F]

@mjohnson541 I believe my internet connection is stable. Now I tried to run the command conda env create -f environment.yml again, and at the same time, in a different terminal window, I pinged www.google.com. I let ping run until the command conda env create -f environment.yml had terminated. The ping statistics showed 0% package loss:

--- www.google.com ping statistics ---
121 packets transmitted, 121 received, 0% packet loss, time 121405ms
rtt min/avg/max/mdev = 9.462/10.903/18.311/1.059 ms

[alongd]

I can suggest trying to use mamba, which should be more efficient in solving envs than conda.

first, install mamba (see https://anaconda.org/conda-forge/mamba)

then do:

cd RMG-Py
mamba env create -f environment.yml