conda_env_installer.bash

#!/bin/bash

# Copyright (c) 2025, Amogh S. Joshi

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# FILENAME:  conda_env_installer

# necessary loading. DO NOT MODIFY
source config_rcac.bash

# system constants. DO NOT CHANGE
USER=$(whoami)
FLAG=false

# usage help message
usage() {
	echo "usage: $0 [-h] [-f YML_FILENAME] [-p YML_PATH] [-n ENV_NAME]" 1>&2;
	echo "-h: Display help message"
	echo "-f YML_FILENAME: Name of env yml file. Defaults to 'environment.yml'"
    echo "-p YML_PATH: Path to yml file. Defaults to '${HOME}/rcac-utils'"
    echo "-n ENV_NAME: Name of env to be created. Defaults to 'environment'"
	exit 1;
}

# arg init
YML_FILENAME=environment.yml
YML_PATH=$HOME/rcac-utils
ENV_NAME=environment

# read args
while getopts "hf:p:n:" opts; do
	case "${opts}" in
		h)	usage;;
		f)	YML_FILENAME=$OPTARG;;
        p)  YML_PATH=$OPTARG;;
        n)  ENV_NAME=$OPTARG;;
		*)	usage;;
	esac
done

# navigate to home dir
cd $HOME

if [ -d "anaconda3" ]; then
    read -p " $( echo -e "[${yellow}WARNING${nc}] Anaconda installation found! This conflicts with Lmod module conda and causes job failures. Should it be deleted? (y/n) ")" confirm && [[ $confirm == [yY] || $confirm == [yY][eE][sS] ]] || FLAG=true
    if $FLAG; then
        exit 1
    fi
    # remove custom anaconda dir
    rm -rf $HOME/anaconda3/
    # remove old conda installation scripts (if any)
    rm -f $HOME/Anaconda*.bash
fi

# import lmod conda module
module load conda
# import lmod cuda module to ensure the correct version of pytorch gets installed
module load cuda

# create env
conda env create -n $ENV_NAME --file $YML_PATH/${YML_FILENAME}

echo -e "[${green}DONE${nc}]"