adding repo files

.gitattributes

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+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+*.sh text eol=lf

.github/install_env_from_github.sh

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+#!/bin/bash
+
+# Check if user provided an argument
+if [ "$#" -lt 1 ]; then
+    echo "Exiting: Please provide an input environment yaml file like this: $0 <path_to_input_yaml>"
+    exit 1
+fi
+
+# Initialize flags for special package installations
+install_openmdao_from_git=false
+install_dymos_from_git=false
+
+# Name of the original YAML file provided by the user
+input_yaml=$1
+
+# Name of the intermediate and modified YAML files
+intermediate_yaml="intermediate_environment.yml"
+output_yaml="modified_environment.yml"
+
+# Name of the new conda environment
+if [ "$#" -ge 2 ]; then
+    env_name=$2
+else
+    env_name="debug_env"
+fi
+
+# Determine if mamba is available and use it; otherwise, use conda
+if command -v mamba &> /dev/null; then
+    pkg_manager="mamba"
+else
+    pkg_manager="conda"
+fi
+
+# Check if an environment with the specified name already exists
+if conda env list | grep -q -w "$env_name"; then
+    read -p "An environment with the name $env_name already exists. Do you want to remove it before proceeding? (y/n): " answer
+    if [ "$answer" = "y" ]; then
+        conda env remove -n $env_name
+    else
+        echo "Exiting. Please choose a different environment name, environment names can be specified as an additional argument."
+        exit 1
+    fi
+else
+    echo "Creating the $env_name environment"
+fi
+
+# Extract pyoptsparse line
+pyoptsparse_line=$(grep ' pyoptsparse' $input_yaml | sed 's/^    //')
+
+# Remove specified packages and write to an intermediate file
+grep -v -e 'aviary' -e 'build-pyoptsparse' -e 'pyoptsparse' $input_yaml > $intermediate_yaml
+
+# Check for 'dev' versions of OpenMDAO and Dymos
+if grep -q -e 'openmdao.*dev' $intermediate_yaml; then
+    install_openmdao_from_git=true
+    grep -v -e 'openmdao' $intermediate_yaml > $output_yaml
+    mv $output_yaml $intermediate_yaml  # Move output to intermediate for further processing
+fi
+
+if grep -q -e 'dymos.*dev' $intermediate_yaml; then
+    install_dymos_from_git=true
+    grep -v -e 'dymos' $intermediate_yaml > $output_yaml
+else
+    mv $intermediate_yaml $output_yaml
+fi
+
+# Insert pyoptsparse line after the 'dependencies' line
+awk -v p="$pyoptsparse_line" '/dependencies/ {print; print p; next}1' $output_yaml > tmp && mv tmp $output_yaml
+
+# Remove the intermediate file
+rm -f $intermediate_yaml
+
+# Create a new conda environment from the modified YAML file
+$pkg_manager env create -f $output_yaml -n $env_name
+
+source activate base
+
+# Activate the new conda environment
+conda activate $env_name
+
+# Check flags and install special packages if needed
+if [ "$install_openmdao_from_git" = true ]; then
+    pip install git+https://github.com/OpenMDAO/OpenMDAO.git
+fi
+
+if [ "$install_dymos_from_git" = true ]; then
+    pip install git+https://github.com/OpenMDAO/dymos.git
+fi
+
+# Print a reminder to install other packages manually
+echo "---------------"
+echo "Reminder: You need to install Aviary manually using the relevant versions based on what you are trying to debug."
+echo "Please also install pyOptSparse with SNOPT manually if you need them to debug your problem."
+echo "Activate the new environment using: conda activate $env_name"